Comparative characteristic of nanopowders on the basis of Fe obtained by the low-temperature synthesis from oxalates and citrates

TitleComparative characteristic of nanopowders on the basis of Fe obtained by the low-temperature synthesis from oxalates and citrates
Publication TypeJournal Article
Year of Publication2014
AuthorsBoshitskaya, NV, Kushchevskaya, NF, Baglyuk, GA, Kurovskii, VYa., Goncharuk, DA
Abbreviated Key TitleDopov. Nac. akad. nauk Ukr.
DOI10.15407/dopovidi2014.02.092
Issue2
SectionMaterials Science
Pagination92-97
Date Published2/2014
LanguageRussian
Abstract

A comparative investigation of nanopowders produced by the decomposition of oxalate and citrate salts of iron in the temperature range of 250–450 ºC and their reduction in hydrogen and a modified method of subsequent prolonged passivation of the iron powder surface obtained by the controlled substitution of hydrogen protective atmosphere by air mixture over a period of 5–8 h is performed. It is shown that the phase composition of the obtained iron nanopowders significantly depends on the composition of the initial charge: at the decomposition of iron citrate at 400–450 ºC, α-Fe nanopowder was obtained, while the decomposition of iron oxalate at the same temperatures gave a mixture of α-Fe and Fe3O4. The average size of the obtained powders is ∼ 100 nm.

KeywordsFe, low-temperature synthesis, nanopowders
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