Реферат: The present work reports the formation of Fe-Au metastable alloys by galvanic replacement, pressureless spark plasma sintering (SPS) and acid treatment. The reaction of partial galvanic replacement between micrometer-sized iron particles and HAuCl4 solution allowed synthesising core–shell Fe@Au particles. When the Fe@Au particles were treated in HCl solution, iron was selectively dissolved and hollow Au particles were formed. Pressureless SPS of the Fe@Au core–shell particles led to the formation of a metastable intermetallic phase, FeAu3, and a supersaturated solid solution, Au(Fe). The latter was resistant to HCl solution; at the same time, the FeAu3 phase decomposed during HCl treatment to form a porous gold structure. This work shows that a combination of galvanic replacement, SPS and acid treatment can be used for the preparation of metastable Fe-Au alloys with different phase compositions and particle morphologies.

Библиографическая ссылка: Bokhonov B.B. , Sharafutdinov M.R. , Dudina D.V.
Formation of metastable phases during spark plasma sintering of Fe@Au core–shell particles
Philosophical Magazine. 2024. P.1-17. DOI: 10.1080/14786435.2024.2352015 WOS Scopus РИНЦ OpenAlex

Даты:

Поступила в редакцию:	26 февр. 2024 г.
Опубликована online:	15 мая 2024 г.

Идентификаторы БД:

Web of science:	WOS:001223877300001
Scopus:	2-s2.0-85193064738
РИНЦ:	67874029
OpenAlex:	W4396925508

Цитирование в БД:

БД	Цитирований
OpenAlex	2
Scopus	2
Web of science	2

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