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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Altunin R. R., Moiseenko E. T., Zharkov S. M.
Заглавие : Structural phase transformations in Al/Pt bilayer thin films during the solid-state reaction
Коллективы : Russian Foundation for Basic Research [16-33-00475 mol_a]
Место публикации : Phys. Solid State. - 2018. - Vol. 60, Is. 7. - P.1413-1418. - ISSN 1063-7834, DOI 10.1134/S106378341807003X. - ISSN 1090-6460(eISSN)
Примечания : Cited References: 26. - This study was supported by the Russian Foundation for Basic Research, project no. 16-33-00475 mol_a.
Предметные рубрики: AL
SYSTEM
MULTILAYERS
ALUMINUM
HEAT
Аннотация: A sequence of phases forming during the solid-phase reaction in Al/Pt bilayer thin films has been investigated by in situ electron diffraction. It is shown that the amorphous PtAl2 phase forms first during the solid-phase reaction initiated by heating. Upon further heating, PtAl2, Pt2Al3, PtAl, and Pt3Al crystalline phases sequentially form, which is qualitatively consistent with an effective formation heat model. The content of phases forming during the reaction has been quantitatively analyzed and the structural phase transformations have been examined.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pavlov E. A., Chuprov I. V., Nikulin M. V., Mal'tsev E. V., Pshenichnaya A. A., Grigoreva T. F., Pastukhov E. A., Skuratov A. P., Lyakhov N. Z.
Заглавие : Mechanochemical synthesis of intermetallic compounds in the gallium-iridium system
Место публикации : Russ. Metall. - 2018. - Is. 8. - P.728-732. - ISSN 0036-0295, DOI 10.1134/S0036029518080141. - ISSN 1555-6255(eISSN)
Примечания : Cited References: 18. - This work was performed in terms of project no. 1622/17 of the Krasnoyarsk Plant of Nonferrous Metals and the Institute of Solid State Chemistry and Mechanochemistry.
Предметные рубрики: ALUMINUM
Ключевые слова (''Своб.индексиров.''): mechanochemical synthesis--intermetallic compounds--gallium--iridium--complex compounds of iridium
Аннотация: The interaction between a solid inert metal (Ir) and an active liquid metal (Ga) during mechanical activation in a high-energy planetary mill is studied by X-ray diffraction and scanning electron microscopy with EDS-apparatus for high-resolution energy dispersive X-ray microanalysis. The influence of mechanical activation conditions on the formation of GaxIry intermetallic compounds and GaxIry/Ir composites and on their solubility in various acids is investigated. Being a surfactant for iridium, gallium propagates along the grain boundaries of polycrystalline iridium particles during mechanical activaiton and, hence, sharply decreases their strength. As a result of strong mechanical deformation during activation, the contact surface area between the solid and liquid metals, where the intermetallic compounds form intensely, increases sharply. As a result of treatment of the products of mechanical activaiton by a mixture of concentrated hydrochloric and nitric acids, iridium (30%) from passes into an acid solution and forms HxIrCly complex compounds, which can interact with bases to form soluble complex salts.
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