Главная
Авторизация
Фамилия
Пароль
Регистрация
Библиотека института физики им. Л.В. Киренского СО РАН
Базы данных
Труды сотрудников ИФ СО РАН - результаты поиска
Вид поиска
Каталог книг и брошюр библиотеки ИФ СО РАН
Каталог журналов библиотеки ИФ СО РАН
Труды сотрудников ИФ СО РАН
Область поиска
Ключевые слова
Автор
Заглавие
Год издания
Место работы автора
в найденном
Найдено в других БД:
Каталог книг и брошюр библиотеки ИФ СО РАН (2)
Формат представления найденных документов:
полный
информационный
краткий
Отсортировать найденные документы по:
автору
заглавию
году издания
типу документа
Поисковый запрос:
(<.>K=Microstructure<.>)
Общее количество найденных документов
:
64
Показаны документы
с 1 по 20
1.
The effect of
high-temperature and high-stress martensite aging on martensitic transformation and
microstructure
of Ti-51.5 at % Ni single crystals / E. E. Timofeeva, E. Yu. Panchenko, A. S. Eftifeeva [et al.]> //
AIP Conf. Proc. - 2020. -
Vol. 2310
. - Ст. 020336
DOI
10.1063/5.0034595. - Cited References: 9. - The study was supported by the Russian Science Foundation (grant No. 18-19-00298)
Аннотация:
In this work, the thermomechanical stability of heterophase [001]-oriented Ti–51.5 at % Ni single crystals was investigated. Experiments include a high-temperature and high-stress martensite ageing and also loading/unloading cycling at superelasticity (SE) during forward and reverse B2-B19′ martensitic transformations (MT). It was found that Ti–51.5 at % Ni single crystals containing large Ti3Ni4 particles (d ∼ 600 nm after ageing at 850 K for 1 h) is not resistant to stress-assisted martensite ageing and cycling. Stress-assisted martensite ageing at 423 K, 1.7–2 GPa, for 2–4 h leads to the deformation of large Ti3Ni4 particles, the appearance of dislocations at the particle-matrix boundaries, an increase in MT temperatures (by 10 K), and a strong diffusion of the MT (the intervals of forward and reverse MT Δσ1 and Δσ2 increase in 2 times). During loading/unloading cycling at 423 K and 1.0–2.0 GPa single crystals with large particles were destroyed after 20–25 cycles. It is possible to increase the thermomechanical stability due to the additional precipitation of nanosized Ti3Ni4 particles (d‹30 nm by ageing at 673 K, 1 h), which appear in the B2 matrix between large particles. In such crystals with a bimodal structure no changes in the
microstructure
and functional properties were observed after stress-assisted martensite ageing and loading/unloading cycling.
Смотреть статью
,
Scopus
,
WOS
,
Читать в сети ИФ
Держатели документа:
Siberian Physical-Technical Institute, National Research Tomsk State University, Tomsk, 634050, Russian Federation
Kirensky Institute of Physics, Federal Research Center, KSC Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Timofeeva, E. E.; Panchenko, E. Yu.; Eftifeeva, A. S.; Yanushonite, E. I.; Zherdeva, M. V.; Chumlyakov, Yu. I.; Volochaev, M. N.; Волочаев, Михаил Николаевич; International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology 2020(5 - 9 October 2020 ; Tomsk, Russian Federation)
}
Найти похожие
2.
Grain-size dependence of
magnetic
microstructure
and high-frequency susceptibility of nanocrystalline thin films: A micromagnetic simulation study / A. V. Izotov, B. A. Belyaev, P. N. Solovev, N. M. Boev> // J. Magn. Magn. Mater. - 2021. -
Vol. 529
. - Ст. 167856,
DOI
10.1016/j.jmmm.2021.167856. - Cited References: 73. - The reported study was funded by RFBR, the Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund and JSC «NPP «Radiosviaz», project number 20-42-242901 . - ISSN 0304-8853
Кл.слова (ненормированные):
Micromagnetic simulation
--
Nanocrystallites
--
Local magnetic anisotropy
--
Ferromagnetic resonance
--
Magnetization ripple
--
Two-magnon scattering process
Аннотация:
The size of crystallites is one of the most important factors that determine the key characteristics of nanocrystalline thin magnetic films that make them very promising media for various applications. In this paper, using micromagnetic simulation, we study in detail the influence of the grain size on the magnetic
microstructure
of the films and its relation with high-frequency dynamics of magnetization. When the grain size exceeds some critical value Dcr, a sharp broadening and shift of the ferromagnetic resonance line are observed at certain frequencies of the alternating magnetic field. Using a two-magnon scattering model, it is shown that these effects are caused by the scattering of spin waves on the inhomogeneous stochastic magnetic structure—magnetization ripple. An expression for the determination of the critical size Dcr is obtained. The micromagnetic simulation results agree with the main conclusions of the static and dynamic theories of magnetization ripple and also confirmed by experimental data reported by other authors.
Смотреть статью
,
Scopus
,
WOS
,
Читать в сети ИФ
Держатели документа:
Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 50/38 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Belyaev, B. A.; Беляев, Борис Афанасьевич; Solovev, P. N.; Соловьев, Платон Николаевич; Boev, N. M.; Боев, Никита Михайлович
}
Найти похожие
3.
The effect of
the initial
microstructure
of the X70 low-carbon microalloyed steel on the heat affected zone formation and the mechanical properties of laser welded joints / A. I. Gordienko, L. S. Derevyagina, A. G. Malikov [et al.]> // Mater. Sci. Eng. A. - 2020. -
Vol. 797
. - Ст. 140075,
DOI
10.1016/j.msea.2020.140075. - Cited References: 32. - Microstructural studies and mechanical tests of laser welds were performed within the frame of the Fundamental Research Program of the State Academies of Sciences for 2013?2020, line of research III.23.1.1. Part of the research related to the selection of optimal laser welding parameters for low carbon steels was carried out within Basic State Project No. AAAA-A17-117030610122-6. TEM studies were carried out in Center of Federal Research Center of Kirensky Institute of Physics SB RAS. The authors are grateful to I.P. Mishin. for assistance in cross-helical rolling of the steel . - ISSN 0921-5093
Кл.слова (ненормированные):
Low-carbon steel
--
Cross-helical rolling
--
Laser welding
--
Heat affected zone
--
Bainite
--
Microhardness
Аннотация:
In this paper, the heat affected zone (HAZ) of laser welded joints of the X70 steel were studied by the transmission electron microscopy method. The effect of the initial
microstructure
(coarse-grained hot-rolled and fine-grained after cross-helical rolling) on the HAZ formation and the mechanical characteristics of the welded joints were shown. It was found that the
microstructure
in the inter-critical HAZ of the steel after cross-helical rolling was more dispersed, homogeneous, and uniform compared to that of the coarse-grained hot-rolled one due to the initial fine-grained ferrite-bainitic-pearlite
microstructure
and the absence of pronounced ferrite-pearlite banding in the base metal. The character of the microhardness value distribution in the HAZ of the steel after cross-helical rolling was smooth with the gradual decrease from 370 down to 185 HV as shifted towards the base metal. In the HAZ of the coarse-grained hot-rolled steel, the heterogeneous microhardness value (up to 640–670 НV) distribution was revealed. The reason was the upper degenerate bainite
microstructure
with high residual stresses, characterized by laths up to 2.0–2.5 μm long and a high martensitic-austenitic constituent fraction (10–16%) of a slender shape along the boundaries of bainite laths. The conclusion was drawn that one of the ways to reduce the brittleness of the laser welded joints could be using the initially fine-grained steels possessing the homogeneous (mainly bainitic)
microstructure
.
Смотреть статью
,
Scopus
,
WOS
,
Читать в сети ИФ
Держатели документа:
Institute of Strength Physics and Materials Science of Siberian Branch Russian Academy of Sciences, 2/4, Pr. Akademicheskii, Tomsk, 634055, Russian Federation
Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences, 4/1, Institutskaya str., Novosibirsk, 630090, Russian Federation
Kirensky Institute of Physics of the Siberian Branch of the Russian Academy of Sciences (SB RAS), Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, 31, Pr. Krasnoyarsk worker, Krasnoyarsk, 660037, Russian Federation
Доп.точки доступа:
Gordienko, A. I.; Derevyagina, L. S.; Malikov, A. G.; Orishich, A. M.; Surikova, N. S.; Volochaev, M. N.; Волочаев, Михаил Николаевич
}
Найти похожие
4.
Microstructure
and magnetic
properties of Co58Ni10Fe5B16Si11 and Co58Ni10Fe5B16Si11-Al2O3 bulk amorphous coatings prepared by plasma spraying / E. A. Denisova, I. V. Nemtsev, S. V. Telegin [et al.]> //
J. Phys.: Conf. Ser. - 2020. -
Vol. 1582
,
Is. 1
. - Ст. 012078
DOI
10.1088/1742-6596/1582/1/012078. - Cited References: 18. - This work was funded by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, the Krasnoyarsk Regional Fund for the Support of Scientific and Technical Activities (project no. 18-42-240006 Nanomaterials with magnetic properties determined by the topological features of the nanostructure). The authors thank the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” for the provided equipment
Кл.слова (ненормированные):
Alumina
--
Aluminum oxide
--
Cobalt alloys
--
Composite coatings
--
Deposits
--
Glass
--
Heat treatment
--
Industrial research
--
Iron alloys
--
Magnetic properties
--
Magnetism
--
Microstructure
--
Nanocrystalline materials
--
Nanocrystals
--
Plasma jets
--
Plasma spraying
--
Silicon
--
Silicon alloys
Аннотация:
The bulk soft magnetic glassy Co58Ni10Fe5B16Si11 alloy specimens have been prepared by plasma spray deposition. In order to increase resistivity of the material, the bulk Co58Ni10Fe5B16Si11-Al2O3 composite materials were fabricated. The investigations of structure and magnetic properties of the bulk samples were carried out by X-ray diffraction, electron microscopy and magnetic measurements. The relation of the structural features and magnetic characteristics of the bulk coating to the main parameters of the deposition regimes was determined. Optimized plasma spray deposition parameters allowed obtaining bulk glassy samples with magnetic parameters that are not inferior to the characteristics of a thermally treated rapidly quenched ribbon with the same composition. It was found that the bulk amorphous coatings can be characterized as a heterophase system. The relaxation annealing of the Co58Ni10Fe5B16Si11 bulk coating leads to a phase transition in this alloy in the precrystallization temperature range. The magnetic properties of the both kinds of coatings are correlated with changes in the
microstructure
. The appearance of nanocrystalline phase with TC640 K during relaxation heat treatment leads to a decrease of the coercivity and to an increase of the permeability. A comparison between the magnetic properties of the CoNiFe-BSi coating and (CoNiFe-BSi)-Al2O3, composite coating is carried out.
Смотреть статью
,
Scopus
,
Читать в сети ИФ
Держатели документа:
Kirensky Institute of Physics, Sb Russian Academy of Sciences, 50/38, Akademgorodok str., Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 73 Svobodny ave., Krasnoyarsk, 660041, Russian Federation
Scientific Center, Federal Research Center Ksc Sb Ras, 50 Akademgorodok str., Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarsky Rabochy ave., Krasnoyarsk, 660037, Russian Federation
Krasnoyarsk Institute of Railways Transport, Novaja Zarja str., Krasnoyarsk, Russian Federation
Доп.точки доступа:
Denisova, E. A.; Денисова, Елена Александровна; Nemtsev, I. V.; Telegin, S. V.; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Kuzovnikova, L. A.; Shepeta, N. A.; International Conference on High-Tech and Innovations in Research and Manufacturing(2020 ; 28 Feb. ; Krasnoyarsk)
}
Найти похожие
5.
Effect of mechanical
activation on the thermoelectric properties of Sr1-xSmxTiO3 ceramics / Y. S. Orlov, S. N. Vereshchagin, S. V. Novikov [et al.]> // Ceram. Int. - 2021. -
Vol. 47
,
Is. 20
. - P. 28992-28999,
DOI
10.1016/j.ceramint.2021.07.060. - Cited References: 31. - This study was supported by the Russian Science Foundation, project no. 19-72-00097 . - ISSN 0272-8842. - ISSN 1873-3956
РУБ
Materials Science, Ceramics
Рубрики:
SRTIO3
LA
MICROSTRUCTURE
CONDUCTIVITY
PERFORMANCE
FIGURE
MERIT
Кл.слова (ненормированные):
Strontium titanate solid solutions
--
Thermoelectric oxide materials
--
Mechanochemical activation
Аннотация:
The Sr1-xSmxTiO3 (х = 0.025, 0.05, 0.075, 0.1, 0.2) strontium titanate solid solutions were prepared from oxides and carbonates using a conventional ceramic technology based on the mechanochemical activation. The electrical conductivity and Seebeck coefficient of the synthesized compounds were measured in the temperature range from 300 to 800 K. We found that the properties of the samples significantly depend on the preliminary mechanochemical activation. The thermoelectric power factor attains maximum value in the hydrogen reduced samples with concentration of х = 0.05 and 0.075 obtained from nanoparticles: 5.5 μW/(cm · K2) for Sr0.95Sm0.05TiO3 (580 K) and 4.10 μW/(cm · K2) for Sr0.925Sm0.075TiO3 (650 K). An increase in the annealing temperature of mechanically activated samples leads to an even greater increase in electrical conductivity and power factor: 9.2 μW/(cm · K2) for Sr0.925Sm0.075TiO3 (650 K).
Смотреть статью
,
WOS
,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Inst Chem & Chem Technol, Krasnoyarsk Sci Ctr, Siberian Branch, Krasnoyarsk 660036, Russia.
Ioffe Inst, St Petersburg 194021, Russia.
Доп.точки доступа:
Orlov, Yu. S.; Орлов, Юрий Сергеевич; Vereshchagin, S. N.; Novikov, S., V; Burkov, A. T.; Borus, A. A.; Борус, Андрей Андреевич; Sitnikov, M., V; Solovyov, L. A.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Russian Science FoundationRussian Science Foundation (RSF) [19-72-00097]
}
Найти похожие
6.
Comparison of the
microstructure
and magnetic properties of films and composite powders based on 3-d metal / E. A. Denisova, L. A. Chekanova, N. A. Shepeta, L. A. Kuzovnikova> //
4th International Baltic Conference on Magnetism (IBCM 2021) : Book of abstracts. - 2021. - P. 193. - Cited References: 1. - The research was funded by RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, project number 20-43-240003.
Материалы конференции
,
Читать в сети ИФ
Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS
Доп.точки доступа:
Denisova, E. A.; Денисова, Елена Александровна; Chekanova, L. A.; Чеканова, Лидия Александровна; Shepeta, N.A.; Kuzovnikova, L. A.; Кузовникова, Людмила Александровна; International Baltic Conference on Magnetism: focus on nanobiomedicine and smart materials(4 ; 2021 ; Aug. 29-Sept. 2 ; Svetlogorsk, Russia); Балтийский федеральный университет им. И. Канта
}
Найти похожие
7.
Properties of degradable
polyhydroxyalkanoates with different monomer compositions / T. Volova, E. Kiselev, I. Nemtsev [et al.]> // Int. J. Biol. Macromol. - 2021. -
Vol. 182
. - P. 98-114,
DOI
10.1016/j.ijbiomac.2021.04.008. - Cited References: 109. - The part of the reported study on polymer synthesis and examination was funded by RFBR and KKRF [Grant No. 19-43-240012 “Biological and physical principles of production of new generation biomaterials”]. The work on production and investigation of polymer films was carried out as part of the State Assignment of the Ministry of Education and Science of the Russian Federation [Grant No. FSRZ-2020-0006] . - ISSN 0141-8130
Кл.слова (ненормированные):
Physicochemical properties
--
Chemical composition
--
Physicochemical properties
--
Films
--
Microstructure
--
Surface properties
Аннотация:
Purpose: To synthesize and investigate polyhydroxyalkanoates (PHAs) with different monomer composition and percentages and polymer films prepared from them. Results: Various PHAs: homopolymer poly-3-hydroxybutyrate P(3HB) and 2-, 3-, and 4-component copolymers comprising various combinations of 3-hydroxybutyrate (3HB), 3-hydroxyvalerate (3HV), 4-hydroxybutyrate (4HB), and 3-hydroxyhexanoate (3HHx) monomers were synthesized under specialized conditions. Relationships were found between the monomer composition of PHAs and their molecular-weight and thermal properties and degree of crystallinity. All copolymers had decreased weight average molecular weights, Mw (to 390–600 kDa), and increased values of polydispersity (3.2–4.6) compared to the P(3HB). PHA copolymers showed different thermal behavior: an insignificant decrease in Tmelt and the presence of the second peak in the melting region and changes in parameters of crystallization and glass transition. At the same time, they retained thermostability, and the difference between Tmelt and Tdegr was at least 100–120 °C. Incorporation of 4HB, 3HV, and 3HHx monomer units into the 3-hydroxybutyrate chain caused changes in the amorphous to crystalline ratio and decreased the degree of crystallinity (Cx) to 20–40%. According to the degree to which the monomers reduced crystallinity, they were ranked as follows: 4HB – 3HHx – 3HV. A unique set of films was produced; their surface properties and physical/mechanical properties were studied as dependent on PHA composition; monomers other than 3-hydroxybutyrate were found to enhance hydrophilicity, surface development, and elasticity of polymer films. Conclusion: An innovative set of PHA copolymers was synthesized and solution-cast films were prepared from them; the copolymers and films were investigated as dependent on polymer chemical composition. Results obtained in the present study contribute to the solution of a critical issue of producing degradable polymer materials.
Смотреть статью
,
Scopus
,
WOS
,
Читать в сети ИФ
Держатели документа:
Siberian Federal University, 79 Svobodnyi av., Krasnoyarsk, 660041, Russian Federation
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
L.V. Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/12 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Volova, T.; Kiselev, E.; Nemtsev, I. V.; Немцев, Иван Васильевич; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Sukovatyi, A.; Kuzmin, A.; Ryltseva, G.; Shishatskaya, E.
}
Найти похожие
8.
Effect of helical
rolling on the bainitic
microstructure
and impact toughness of the low-carbon microalloyed steel / L. S. Derevyagina, A. I. Gordienko, N. S. Surikova, M. N. Volochaev> // Mater. Sci. Eng. A. - 2021. -
Vol. 816
. - Ст. 141275,
DOI
10.1016/j.msea.2021.141275. - Cited References: 43 . - ISSN 0921-5093
Кл.слова (ненормированные):
Low-carbon microalloyed steel
--
Helical rolling
--
Microstructure
--
Bainite
--
Martensite–austenite constituent
--
Impact toughness
Аннотация:
Ferrite-bainite microstructures and impact toughness of the X65 low-carbon microalloyed steel were investigated after helical rolling at 1000, 920, 850, and 810 °C followed by continuous cooling in air. After helical rolling at 1000 °C, granular bainite with large areas of the massive-shape martensite-austenite constituent (d = 1.5 μm) and a high fraction of twinned martensite (d › 2.0 μm) were observed in the steel. This caused a decrease in impact energy at low test temperatures (for example, 70 J at –70°С). Lowering the helical rolling temperature contributed to a reduction of dimensions of both ferrite-bainite and martensite-austenite constituent areas, as well as the replacement of the latter by a slender type one and an improvement in fracture toughness at the low temperatures. The highest impact energy level (210 J at –70 °C) was achieved after helical rolling at 850 °C due to the formation of a homogeneous
microstructure
, which included dispersed ferrite grains, granular bainite and small fractions of the slender type martensite-austenite constituent (d = 0.1–0.7 μm). In this case, areas of twinned martensite were absent.
Смотреть статью
,
Scopus
,
WOS
,
Читать в сети ИФ
Держатели документа:
Institute of Strength Physics and Materials Science of Siberian Branch Russian Academy of Sciences, 2/4, Pr. Akademicheskii, Tomsk, 634055, Russian Federation
Kirensky Institute of Physics of the Siberian Branch of the Russian Academy of Sciences (SB RAS), Akademgorodok 50, Bld. 38, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, 31, Pr. Krasnoyarsk Worker, Krasnoyarsk, 660037, Russian Federation
Доп.точки доступа:
Derevyagina, L. S.; Gordienko, A. I.; Surikova, N. S.; Volochaev, M. N.; Волочаев, Михаил Николаевич
}
Найти похожие
9.
Микроструктура и магнитные
свойства нитей на основе 3-d металлов с градиентом концентрации элементов / Е. А. Денисова [и др.]> //
Магнитные материалы. Новые технологии : тез. докл. VIII Байкал. междунар. конф. BICMM-2018 / чл. прогр. ком. R. S. Iskhakov [et al.]. - Иркутск, 2018. - С. 115 . - ISBN 978-5-00133-051-6
Перевод заглавия:
Microstructure
and magnetic properties of wires based on 3-d metals with gradient of composition
РИНЦ
,
Материалы конференции
,
Материалы конференции
,
Читать в сети ИФ
Держатели документа:
Институт физики им. Л.В. Киренского СО РАН
Доп.точки доступа:
Iskhakov, R. S. \чл. прогр. ком.\; Исхаков, Рауф Садыкович; Ovchinnikov, S. G. \чл. прогр. ком.\; Овчинников, Сергей Геннадьевич; Aplesnin, S. S. \чл. прогр. ком.\; Аплеснин, Сергей Степанович; Balaev, D. A. \чл. прогр. ком.\; Балаев, Дмитрий Александрович; Денисова, Елена Александровна; Denisova, E. A.; Чеканова, Лидия Александровна; Chekanova, L. A.; Комогорцев, Сергей Викторович; Komogortsev, S. V.; Iskhakov, R. S.; Немцев, Иван Васильевич; Nemtsev, I. V.; Шепета, Наталья Александровна; Shepeta N.A.; Кузовникова, Людмила Александровна; Kuzovnikova, L. A.; Байкальская международная конференция "Магнитные материалы. Новые технологии"(8 ; 2018 ; авг. ; 24-28 ; Иркутск); "Магнитные материалы. Новые технологии", Байкальская международная конференция(8 ; 2018 ; авг. ; 24-28 ; Иркутск); "Magnetic materials. New tecnologies", Baikal International Conference(8 ; 2018 ; Aug. 24-28 ; Irkutsk); Иркутский государственный университет
}
Найти похожие
10.
Element selective magnetism
in Ho0.5Nd0.5Fe3(BO3)4 single crystal probed with hard X-ray magnetic circular dichroism / M. Platunov [et al.]> // J. Magn. Magn. Mater. - 2019. -
Vol. 479
. - P. 312-316,
DOI
10.1016/j.jmmm.2019.02.040. - Cited References: 40. - The study was supported in part by the grants of the Russian Foundation for Basic Research (project Nos. 16-32-60049, 17-02-00826, 18-42-243007) and the Foundation for Assistance to Small Innovative Enterprises (FASIE, UMNIK program). The magnetic measurements were carried out in the Shared Facility Centre of P.N. Lebedev Physical Institute of RAS. We are grateful to Dr. Alexey Bosak for providing assistance of the structural experiments on the ID28 beamline. We are also grateful to Dr. Evgeniy Eremin from Kirensky Institute of Physics for providing the results of magnetic measurements and for useful discussions. The authors thank the ID12 beamline staffs for help during the XMCD experiment and also gratefully acknowledge the beamtime provision (proposal HC-1804) by the ESRF. . - ISSN 0304-8853. - ISSN 1873-4766
РУБ
Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
MICROSTRUCTURE
TRANSITIONS
ND
Кл.слова (ненормированные):
X-ray magnetic circular dichroism
--
X-ray absorption
--
Magnetic properties
Аннотация:
We present a study of a Ho0.5Nd0.5Fe3(BO3)4 single crystal aiming at understanding the roles of each magnetic sublattices in magnetic transitions at low temperatures. The crystal structure is determined to have the R32 symmetry in whole studied temperature range but the crystal appears to be racemic. Element selective magnetic properties studied with X-ray magnetic circular dichroism at the L2,3-edges of Ho and Nd, and at the Fe K-edge at T = 3 K under magnetic fields of ±17 T are compared with the results of macroscopic magnetization measurements in pure and substituted crystals. All three magnetic sublattices are shown to be strongly coupled and to undergo a spin-reorientation transition when magnetic field is applied along the trigonal c-axis. On the contrary, when magnetic field is applied in the ab-plane only the holmium atoms exhibit a sizeable magnetization jump. This result allows us to conclude that the spin-flop transitions observed in macroscopic magnetization curves and associated anomalies of electric polarization are due to the Ho3+ magnetic moment reorientation.
Смотреть статью
,
Scopus
,
WOS
,
Читать в сети ИФ
Держатели документа:
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Akademgorodok 50,Bld 38, Krasnoyarsk 660036, Russia.
European Synchrotron, ESRF, 71 Ave Martyrs CS40220, F-38043 Grenoble 9, France.
Swiss Norwegian Beamlines ESRF, 71 Ave Martyrs CS40220, F-38043 Grenoble 9, France.
RAS, PN Lebedev Phys Inst, Moscow 119991, Russia.
Доп.точки доступа:
Platunov, M. S.; Платунов, Михаил Сергеевич; Kazak, N. V.; Казак, Наталья Валерьевна; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Temerov, V. L.; Темеров, Владислав Леонидович; Gudim, I. A.; Гудим, Ирина Анатольевна; Knyazev, Yu. V.; Князев, Юрий Владимирович; Gavrilkin, S. Yu.; Dyadkin, Vadim; Dovgaliuk, Iurii; Chernyshov, Dmitry; Hen, Amir; Wilhelm, Fabrice; Rogalev, Andrei; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Russian Foundation for Basic Research [16-32-60049, 17-02-00826, 18-42-243007]; Foundation for Assistance to Small Innovative Enterprises (FASIE, UMNIK program)
}
Найти похожие
11.
Microstructure
and phase
composition of the two-phase ceramic synthesized from titanium oxide and zinc oxide / G. M. Zeer [et al.]> // Sci. Sinter. - 2018. -
Vol. 50
,
Is. 2
. - P. 173-181,
DOI
10.2298/SOS1802173Z. - Cited References: 22 . - ISSN 0350-820X
Перевод заглавия:
Микроструктура и фазовый состав двухфазной керамики, синтезированной из оксидов титана и цинка
Кл.слова (ненормированные):
Nanopowders
--
Titanium oxide
--
Zinc oxide
--
Solid phase reaction
--
Ceramic
Аннотация:
We have made investigations of the phase formation and
microstructure
on the ceramics obtained from a starting nanopowder mixture with the weight ratio ZnO : TiO2 = 4 : 1. Ceramic is obtained at different sintering temperatures, namely, 948, 1223 and 1473 К. Using the characterization methods of electron microscopy, energy dispersive microanalysis and X-ray diffraction phase analysis it has been shown that the ceramics structure is consisted of two dispersed phases of Zn2TiO4 and ZnO with the grain sizes being in range 0,5-1 μm. It has been found also that, at ceramic`s sintering temperature of 1223 К, the solid phase interactions are completed with the structure ZnO : Zn2TiO4 ≈ 1 : 1,5 phase ratio.
Смотреть статью
,
Scopus
,
WOS
,
Читать в сети ИФ
Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian State Aerospace University, Krasnoyarsk, 660014, Russian Federation
Доп.точки доступа:
Zeer, G. M.; Zelenkova, E. G.; Nikolaeva, N. S.; Zharkov, S. M.; Жарков, Сергей Михайлович; Abkaryan, A. K.; Mikheev, A. A.
}
Найти похожие
12.
Объемные аморфные композиционные
покрытия Co58Ni10Fe5B16Si11-Al2O3 , Co58Ni10Fe5B16Si11-ZrO2: микроструктура и магнитные свойства / Е. А. Денисова [и др.]> //
Магнитные материалы. Новые технологии : тез. докл. VIII Байкал. междунар. конф. BICMM-2018 / чл. прогр. ком. R. S. Iskhakov [et al.]. - Иркутск, 2018. - С. 107-108 . - ISBN 978-5-00133-051-6
Перевод заглавия:
Bulk amorphous composite coating Co58Ni10Fe5B16Si11-Al2O3, Co58Ni10Fe5B16Si11-ZrO2:
microstructure
and magnetic properties
РИНЦ
,
Материалы конференции
,
Материалы конференции
,
Читать в сети ИФ
Держатели документа:
Институт физики им. Л.В. Киренского СО РАН
Доп.точки доступа:
Iskhakov, R. S. \чл. прогр. ком.\; Исхаков, Рауф Садыкович; Ovchinnikov, S. G. \чл. прогр. ком.\; Овчинников, Сергей Геннадьевич; Aplesnin, S. S. \чл. прогр. ком.\; Аплеснин, Сергей Степанович; Balaev, D. A. \чл. прогр. ком.\; Балаев, Дмитрий Александрович; Денисова, Елена Александровна; Denisova, E. A.; Комогорцев, Сергей Викторович; Komogortsev, S. V.; Iskhakov, R. S.; Немцев, Иван Васильевич; Nemtsev, I. V.; Кузовникова, Людмила Александровна; Kuzovnikova, L. A.; Телегин, С. В.; Юркин, Глеб Юрьевич; Yurkin, G. Yu.; Шепета, Наталья Александровна; Shepeta N.A.; Байкальская международная конференция "Магнитные материалы. Новые технологии"(8 ; 2018 ; авг. ; 24-28 ; Иркутск); "Магнитные материалы. Новые технологии", Байкальская международная конференция(8 ; 2018 ; авг. ; 24-28 ; Иркутск); "Magnetic materials. New tecnologies", Baikal International Conference(8 ; 2018 ; Aug. 24-28 ; Irkutsk); Иркутский государственный университет
}
Найти похожие
13.
Composition and Ligand
Microstructure
of Arsenopyrite from Gold Ore Deposits of the Yenisei Ridge (Eastern Siberia, Russia) / A. M. Sazonov [et al.]> // Minerals. - 2019. -
Vol. 9
,
Is. 12
. - Ст. 737,
DOI
10.3390/min9120737. - Cited References: 62. - The work was supported by the Russian Foundation for Basic Research (project number 19-35-90017) and the Government of the Russian Federation (project 14.Y26.31.0012). . - ISSN 2075-163X
Перевод заглавия:
Состав и лигандная микроструктура арсенопирита золоторудных месторождений Енисейского хребта (Восточная Сибирь, Россия)
Кл.слова (ненормированные):
arsenopyrite
--
crystal lattice
--
ligand surroundings
--
non-equal positions
--
Mössbauer Effect
--
gold
--
“invisible” gold
--
gold ore deposits
Аннотация:
The Mössbauer spectroscopy method was used to study the ligand
microstructure
of natural arsenopyrite (31 specimens) from the ores of the major gold deposits of the Yenisei Ridge (Eastern Siberia, Russia). Arsenopyrite and native gold are paragenetic minerals in the ore; meanwhile, arsenopyrite is frequently a gold carrier. We detected iron positions with variable distribution of sulfur and arsenic anions at the vertexes of the coordination octahedron {6S}, {5S1As}, {4S2As}, {3S3As}, {2S4As}, {1S5As}, {6As} in the mineral structure. Iron atoms with reduced local symmetry in tetrahedral cavities, as well as iron in the high-spin condition with a high local symmetry of the first coordination sphere, were identified. The configuration {3S3As} typical for the stoichiometric arsenopyrite is the most occupied. The occupation degree of other configurations is not subordinated to the statistic distribution and varies within a wide range. The presence of configurations {6S}, {3S3As}, {6As} and their variable occupation degree indicate that natural arsenopyrites are solid pyrite {6S}, arsenopyrite {3S3As}, and loellingite {6As} solutions, with the thermodynamic preference to the formation of configurations in the arsenopyrite–pyrite–loellingite order. It is assumed that in the variations as part of the coordination octahedron, the iron output to the tetrahedral positions and the presence of high-spin Fe cations depend on the physical and chemical conditions of the mineral formation. It was identified that the increased gold concentrations are typical for arsenopyrites with an elevated content of sulfur or arsenic and correlate with the increase of the occupation degree of configurations {5S1As}, {4S2As}, {1S5As}, reduction of the share of {3S3As}, and the amount of iron in tetrahedral cavities.
Смотреть статью
,
Scopus
,
WOS
,
Читать в сети ИФ
Держатели документа:
Institute of Mining, Geology and Geotechnology, Siberian Federal University, 79 pr. Svobodny, 660041 Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences, 50 Bld. 38 Akademgorodok, 660036 Krasnoyarsk, Russia
Faculty of Geology and Geography, Tomsk National Research State University, 36 Lenina, 634050 Tomsk, Russia
Доп.точки доступа:
Sazonov, A. M.; Silyanov, S. A.; Bayukov, O. A.; Баюков, Олег Артемьевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Zvyagina, Y. A.; Tishin, P. A.
}
Найти похожие
14.
Structural changes of
Co caused a change of the solution pH during chemical deposition / S. A. Podorozhnyak, A. V. Chzhant, V. K. Maltsevt [et al.]> // J. Sib. Fed. Univ. Math. Phys. - 2020. -
Vol. 13
,
Is. 4
. - P. 451-458 ; Журн. СФУ. Матем. и физика,
DOI
10.17516/1997-1397-2020-13-4-451-458. - Cited References: 10 . - ISSN 1997-1397. - ISSN 2313-6022
Перевод заглавия:
Структурные изменения кобальта, вызванные изменением pH при химическом осаждении
РУБ
Mathematics
Рубрики:
COBALT
MICROSTRUCTURE
Кл.слова (ненормированные):
Co-P films
--
chemical reduction of metals
--
induced magnetic anisotropy
--
nanocrystalline material
--
пленки Co-P
--
химическое восстановление металлов
--
наведенная магнитная анизотропия
--
нанокристаллический материал
Аннотация:
The phase transformations of the Co lattice are discussed, which determine the anomalous changes in the magnetic properties of chemically deposited Co-P films obtained at various pH values. The coercivity of the H-c films obtained at low pH values exceeds 1 kOe and decreases to several units Oe in the films obtained at high pH values. It is shown that the observed changes in the magnetic properties of Co-P films are caused by the transition of the cobalt crystal lattice to the nanocrystalline state.
Обсуждаются фазовые превращения решетки Co, которые определяют аномальные изменения магнитных свойств химически осажденных пленок Co-P, полученных при различных значениях pH. Коэрцитивная сила пленок, полученных при низких значениях pH, превышает 1 кЭ и снижается до нескольких единиц Э в пленках, полученных при высоких значениях pH. Показано, что наблюдаемые изменения магнитных свойств пленок Co-P вызваны переходом кристаллической решетки кобальта в нанокристаллическое состояние.
Смотреть статью
,
РИНЦ
,
Scopus
,
WOS
,
Читать в сети ИФ
Держатели документа:
Siberian Fed Univ, Krasnoyarsk, Russia.
Krasnoyarsk State Agr Univ, Krasnoyarsk, Russia.
RAS, Kirensky Inst Phys FIC KNC SB, Krasnoyarsk, Russia.
Доп.точки доступа:
Podorozhnyak, Sergey A.; Chzhant, Anatoly, V; Maltsevt, Vadim K.; Krayuhin, Ivan N.; Patrin, G. S.; Патрин, Геннадий Семёнович; Sakash, Irina Yu
}
Найти похожие
15.
Microstructure
of intercritical
heat affected zone and toughness of microalloyed steel laser welds / L. S. Derevyagina [et al.]> // Mater. Sci. Eng. A. - 2020. -
Vol. 770
. - Ст. 138522,
DOI
10.1016/j.msea.2019.138522. - Cited References: 28 . - ISSN 0921-5093
Кл.слова (ненормированные):
Low-carbon steel
--
Laser welding
--
Heat affected zone
--
Structure
--
Toughness
Аннотация:
Microstructure
of laser welds of the X70 low-carbon pipe steel was studied. High cooling rates after laser welding and non-uniform distribution of carbon in the ferrite-pearlite base metal caused formation of regions with increased microhardness (up to 650 НV) in inter-critical heat affected zone (ICHAZ). These regions consisted of finely dispersed degenerate upper bainite and martensite-austenite constituents of a slender shape and small fraction of a massive shape along the boundaries of bainite laths, as well as twinned martensite. High concentration of martensite-austenite constituents (10–16%) and residual stresses in ICHAZ, as well as a dendritic martensitic structure with carbide interlayers along the boundaries of martensite laths in fusion zone were the main reasons of sharp decrease in charpy impact energy of the welded samples. High microhardness of the laser welds was decreased down to 320 HV and their brittleness was improved by annealing. Also, in ICHAZ, degenerate upper bainite and the regions of martensite-austenite constituents decayed forming tempered sorbite and Fe2C and Fe3C carbides, respectively. Charpy impact energy of the welds doubled after annealing compared to the welds without annealing, and ductile-brittle transition temperature decreased down to –60°С.
Смотреть статью
,
Scopus
,
WOS
,
Читать в сети ИФ
Держатели документа:
Institute of Strength Physics and Materials Science of Siberian Branch Russian Academy of Sciences, 2/4, pr. Akademicheskii, Tomsk, 634055, Russian Federation
Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences, 4/1, Institutskaya str., Novosibirsk, 630090, Russian Federation
Kirensky Institute of Physics of the Siberian Branch of the Russian Academy of Sciences (SB RAS), Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Derevyagina, L. S.; Gordienko, A. I.; Orishich, A. G.; Malikov, N. S.; Surikova, M. N.; Volochaev, M. N.; Волочаев, Михаил Николаевич
}
Найти похожие
16.
Лепешев, Анатолий Александрович
.
Импедансная спектроскопия (ВеО+TiO2)-керамики с добавкой наночастиц TiO2 : статья / А. А. Лепешев, А. В. Павлов, Н. А. Дрокин> // Журнал СФУ. Техн. и технол. - 2019. -
Т. 12
,
№ 3
. - С. 366-380 ; J. Sib. Fed. Univ. Eng. Technol.,
DOI
10.17516/1999-494X-0144. - Библиогр.: 23 . - ISSN 1999-494X
Перевод заглавия:
Impedance Spectroscopy (BeO+TiO2)-Ceramics with Additive of TiO2 Nanoparticles
Кл.слова (ненормированные):
(ВеО+TiO2)-керамика
--
микроструктура
--
электрофизические свойства
--
импеданс
--
частотная зависимость
--
диэлектическая проницаемость
--
тангенс угла диэлектрических потерь
--
(BeO+TiO2)-ceramics
--
microstructure
--
electrophysical properties
--
impedance
--
frequency dependence
--
dielectric permeability
--
dielectric loss tangent
Аннотация:
Настоящее исследование направлено на получение электропроводной двухкомпонентной керамики на основе ВеО с добавками микро- и нанокристаллического порошка TiO2. Керамика состава (BeO+TiO2) находит применение в радиоэлектронной технике в качестве эффективных поглотителей СВЧ-излучения и в других областях современной электроники. Природа возникновения электрической проводимости и поглощения СВЧ-поля в (ВеО+TiO2)керамике окончательно не установлена. Методом импедансной спектроскопии впервые исследованы электрические и диэлектрические характеристики данной керамики в диапазоне частот от 100 Hz до 100 МHz в зависимости от присутствия в составе керамики ВеО микро- и наноразмерной фазы TiO2. Установлено, что статическое сопротивление керамики с добавкой нанопорошка оксида титана существенно уменьшается по сравнению с сопротивлением исходной керамики с микропорошком TiO2. Показано, что действительная и мнимая компоненты диэлектрической проницаемости исследуемых керамик возрастают до аномально больших величин при понижении частоты действующего электрического поля, а в области высоких частот f ≥ 10 8 Hz начинается процесс диэлектрической релаксации, приводящий к росту тангенса угла диэлектрических потерь. Определены диэлектрические характеристики данных образцов керамик в условиях блокирования сквозной проводимости.
The present study is aimed at obtaining electrically conductive two-component ceramics based on BeO with the addition of micro and nanocrystalline TiO2 powder. The ceramics of the composition (BeO+TiO2) is used in radio-electronic equipment as effective absorbers of microwave radiation and in other areas of modern electronics. The nature of the appearance of electrical conductivity and absorption of the microwave field in (BeO+TiO2) ceramics has not been completely established. The impedance spectroscopy method for the first time investigated the electrical and dielectric characteristics of this ceramics in the frequency range from 100 Hz to 100 MHz, depending on the presence of micro and nano-sized TiO2 phases in the composition of the BeO ceramics. It was established that the static resistance of ceramics with the addition of titanium oxide nanopowder is significantly reduced compared with the resistance of the original ceramics with TiO2 micropowder. It is shown that the real and imaginary components of the dielectric constant of the studied ceramics increase to abnormally large values when the frequency of the effective electric field decreases, and in the high frequency range f ≥ 10 8 Hz, the process of dielectric relaxation begins, leading to an increase in the dielectric loss tangent. The dielectric characteristics of these ceramic samples under conditions of blocking through conduction are determined.
Смотреть статью
,
РИНЦ
,
Читать в сети ИФ
Держатели документа:
Институт физики им. Л.В. Киренского СО РАН
Сибирский федеральный университет
Доп.точки доступа:
Павлов, А. В.; Pavlov, Alexandr V.; Дрокин, Николай Александрович; Drokin, N. A.; Lepeshev, A. A.
}
Найти похожие
17.
The synthesis,
microstructure
,
transport and magnetic properties of Bi-based low density HTSC [Text] / M. I. Petrov [et al.]> //
J. Mater. Process. Technol. - 2005. -
Vol. 161
,
Is. 1-2
. - P58-61,
DOI
10.1016/j.jmatprotec.2004.07.056. - Cited Reference Count: 4 . - APR 10. - ISSN 0924-0136
Аннотация:
HTSC Bi1.8Pb0.3Sr2Ca2Cu3Ox of low density has been synthesized and its structural and physical properties have been studied. Scanning electron microscopy (SEM) image shows that the material obtained has porous "foam" structure. The levitation force measured for the porous Bi1.8Pb0.3Sr2Ca2Cu3Ox is appeared to be approximately the same as for polycrystalline YBCO of high density. These "foam" structures may be an ideal material for some practical applications of HTSCs in bulk form. (c) 2004 Elsevier B.V. All rights reserved.
WOS
,
Scopus
,
eLibrary
Доп.точки доступа:
Petrov, M. I.; Петров, Михаил Иванович; Tetyueva, T. N.; Kveglis, L. I.; Квеглис, Людмила Иосифовна; Efremov, A. A.; Balaev, D. A.; Балаев, Дмитрий Александрович; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Popkov, S. I.; Попков, Сергей Иванович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Zeer, E. P.; Зеер, Эвальд Петрович; Japanese/Mediterranean Workshop on Applied Electronmagnetic Engineering for Magnetic and Superconducting Materials/3rd Superconducting Flywheel Workshop(3rd ; MAY 19-21, 2003 ; Athens, GREECE)
}
Найти похожие
18.
Микроструктура и магнитные
свойства высоко энтропийных сплавов FeCoNiP-Me (Me=Zn, Zr, W), полученных методов химического осаждения / Л. А. Чеканова, Е. А. Денисова, С. В. Комогорцев [и др.]> //
Магнитные материалы. Новые технологии : тез. докл. IX Байкал. междунар. конф. BICMM-2023 / чл. прогр. ком.: S. S. Aplesnin [et al.] ; чл. орг. ком. R. S. Iskhakov [et al.]. - Иркутск, 2023. - С. 125-126,
DOI
10.26516/978-5-9624-2178-0.2023.1-207. - Библиогр.: 4 . - ISBN 978-5-962402178-0
Перевод заглавия:
Microstructure
and magnetic properties of FeCoNiP-Me (Me=Zn, Zr, W) high entropy alloys produced by electroless deposition
Материалы конференции
,
Материалы конференции
,
Читать в сети ИФ
Держатели документа:
Институт физики им. Л. В. Киренского СО РАН
Сибирский федеральный университет
Красноярский научный центр СО РАН
Доп.точки доступа:
Аплеснин, Сергей Степанович \чл. прогр. ком.\; Aplesnin, S. S.; Балаев, Дмитрий Александрович \чл. прогр. ком.\; Balaev, D. A.; Овчинников, Сергей Геннадьевич \чл. прогр. ком.\; Ovchinnikov, S. G.; Исхаков, Рауф Садыкович \чл. орг. ком.\; Iskhakov, R. S.; Чеканова, Лидия Александровна; Chekanova, L. A.; Денисова, Елена Александровна; Denisova, E. A.; Комогорцев, Сергей Викторович; Komogortsev, S. V.; Важенина, Ирина Георгиевна; Vazhenina, I. G.; Исхаков, Рауф Садыкович; Бондаренко, Галина Николаевна; Bondarenko, G. N.; Кох, Д.; Великанов, Дмитрий Анатольевич; Velikanov, D. A.; Немцев, Иван Васильевич; Nemtsev, I. V.; Еремин, Леонид Аркадьевич; Байкальская международная конференция "Магнитные материалы. Новые технологии"(9 ; 2023 ; сент. ; 11-14 ; Байкальск); "Магнитные материалы. Новые технологии", Байкальская международная конференция(9 ; 2023 ; сент. ; 11-14 ; Байкальск); "Magnetic materials. New tecnologies", Baikal International Conference(9 ; 2023 ; Sept. ; 11-14 ; Baikalsk); Иркутский государственный университет
}
Найти похожие
19.
The effect of
aluminum-oxide powders on the structure and properties of copper electrodeposited composite coatings / I. R. Volkova, L. E. Tyryshkina, M. N. Volochaev [et al.]> // Prot. Met. Phys. Chem. Surf. - 2023. -
Vol. 59
,
Is. 1
. - P. 71-75,
DOI
10.1134/S2070205122700022. - Cited References: 9 . - ISSN 2070-2051. - ISSN 2070-206X
Кл.слова (ненормированные):
copper electrodeposited composite coatings
--
aluminum-oxide nanopowder
--
alumina
--
microstructure
--
microhardness
--
ultimate tensile strength
Аннотация:
Copper electrodeposited composite coatings containing two types of aluminum-oxide powders with different dispersities (alumina Al2O3-1 and electroexplosive aluminum-oxide nanopowder Al2O3-2) are obtained during the work. The studies show that introducing the powders leads to a change in the
microstructure
of the composites and a change in the grain growth principles during the formation of the coatings. Refinement and ordering of the grain structure of the coatings occurs and twinning defects and texture are formed. The change in the formation of the
microstructure
of the composites leads to a change in some operational characteristics: an increase in the microhardness (by 10% in the composites with the addition of alumina and by more than 30% in the coatings with electroexplosive aluminum oxide) and ultimate tensile strength (by 20% in the composites with Al2O3-1 and almost 1.5-fold in the samples with Al2O3-2).
Смотреть статью
,
Читать в сети ИФ
Публикация на русском языке
Влияние порошков оксида алюминия на структуру и свойства медных композиционных гальванических покрытий [Текст] / И. Р. Волкова, Л. Е. Тырышкина, М. Н. Волочаев [и др.] // Физикохим. поверхн. и защита материалов. - 2023. - Т. 59 № 1. - С. 39-44
Держатели документа:
Federal Research Center “Krasnoyarsk Science Center”, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Siberian Federal University, 660041, Krasnoyarsk, Russia
Reshetnev Siberian State University of Science and Technology, 660037, Krasnoyarsk, Russia
Доп.точки доступа:
Volkova, I. R.; Tyryshkina, L. E.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Zaloga, A. N.; Shabanova, K. A.; Ovchinnikov, A. V.; Lyamkin, A. I.
}
Найти похожие
20.
Biodegradable polyhydroxyalkanoates formed
by 3- and 4-hydroxybutyrate monomers to produce nanomembranes suitable for drug delivery and cell culture / T. G. Volova, A. V. Demidenko, A. V. Murueva [et al.]> // Technologies. - 2023. -
Vol. 11
,
Is. 4
. - Ст. 106,
DOI
10.3390/technologies11040106. - Cited References: 116. - his research was funded by State Assignment of the Ministry of Science and Higher Education of the Russian Federation (project No. 0287-2021-0025) . - ISSN 2227-7080
Кл.слова (ненормированные):
degradable polyhydroxyalkanoates
--
copolymers P(3HB-co-4HB)
--
electrostatic molding
--
membranes
--
microstructure
and properties
--
drugs
--
release kinetics
--
antibacterial activity
--
fibroblast proliferation
Аннотация:
Biodegradable polyhydroxyalkanoates, biopolymers of microbiological origin, formed by 3- and 4-hydroxybutyrate monomers P(3HB-co-4HB), were used to obtain nanomembranes loaded with drugs as cell carriers by electrospinning. Resorbable non-woven membranes from P(3HB-co-4HB) loaded with ceftazidime, doripinem, and actovegin have been obtained. The loading of membranes with drugs differently affected the size of fibers and the structure of membranes, and in all cases increased the hydrophilicity of the surface. The release of drugs in vitro was gradual, which corresponded to the Higuchi and Korsmeyer-Peppas models. Antibiotic-loaded membranes showed antibacterial activity against S. aureus and E. coli, in which growth inhibition zones were 41.7 ± 1.1 and 38.6 ± 1.7 mm for ceftazidime and doripinem, respectively. The study of the biological activity of membranes in the NIH 3T3 mouse fibroblast culture based on the results of DAPI and FITC staining of cells, as well as the MTT test, did not reveal a negative effect despite the presence of antibiotics in them. Samples containing actovegin exhibit a stimulating effect on fibroblasts. Biodegradable polyhydroxyalkanoates formed by 3-hydroxybutyrate and 4-hydroxybutyrate monomers provide electrospinning non-woven membranes suitable for long-term delivery of drugs and cultivation of eukaryotic cells, and are promising for the treatment of wound defects complicated by infection.
Смотреть статью
,
Scopus
,
Читать в сети ИФ
Держатели документа:
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, 660036 Krasnoyarsk, Russia
Institute of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi av., 660041 Krasnoyarsk, Russia
Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50 Akademgorodok, 660036 Krasnoyarsk, Russia
L.V. Kirensky Institute of Physics, 50/12 Akademgorodok, 660036 Krasnoyarsk, Russia
Chemistry Engineering Centre, ITMO University, Kronverkskiy Prospekt, 49A, 197101 Saint Petersburg, Russia
Доп.точки доступа:
Volova, Tatiana G.; Demidenko, Aleksey V.; Murueva, Anastasiya V.; Dudaev, Alexey E.; Nemtsev, I. V.; Немцев, Иван Васильевич; Shishatskaya, Ekaterina I.
}
Найти похожие
полный формат
краткий формат
все найденные
отмеченные
кроме отмеченных
Стандартный
Расширенный
Профессиональный
Распределенный
По словарю
ГРНТИ-навигатор
УДК-навигатор
Тематический навигатор
Другие библиотеки
Центральная Научная Библиотека КНЦ СО РАН
Библиотека института биофизики
Библиотека института химии и химический технологии
Библиотека института вычислительного моделирования
Библиотека института леса
Библиотека СФУ
Краевая научная библиотека
© Международная Ассоциация пользователей и разработчиков электронных библиотек и новых информационных технологий
(Ассоциация ЭБНИТ)