Phase Equilibria in the Sm2O3–CaO–NiO and Sm2O3–NiO–CoO Systems
- Autores: Galayda A.P.1,2, Volkova N.E.1, Gavrilova L.Y.1, Cherepanov V.A.1
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Afiliações:
- Institute of Natural Sciences and Mathematics, Ural Federal University
- Institute of High Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences
- Edição: Volume 55, Nº 6 (2019)
- Páginas: 593-599
- Seção: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/158709
- DOI: https://doi.org/10.1134/S0020168519060049
- ID: 158709
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Resumo
Phase equilibria in the 1/2 Sm2O3–CaO–NiO and 1/2 Sm2O3–NiO–CoO systems are systematically studied at 1100°C in air. The formation of two types of solid solutions Sm2– yCayNiO4 – δ (0.5 ≤ y ≤ 0.55) and SmCo1– xNixO3 – δ (0 < x ≤ 0.15) crystallized in the K2NiF4-type structure and perovskite structure, respectively, is detected. The oxygen content in the samples within the temperature range 25–1100°C in air is determined by means of high temperature thermogravimetry and dichromatometric titration. Isobaric isothermal cross sections of the phase diagrams for the 1/2 Sm2O3–CaO–NiO and 1/2 Sm2O3–NiO–CoO systems at 1100°C and \({{p}_{{{{{\text{O}}}_{{\text{2}}}}}}}\) = 0.21 atm are proposed.
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Sobre autores
A. Galayda
Institute of Natural Sciences and Mathematics, Ural Federal University; Institute of High Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences
Email: nadezhda.volkova@urfu.ru
Rússia, Yekaterinburg, 620083; Yekaterinburg, 620990
N. Volkova
Institute of Natural Sciences and Mathematics, Ural Federal University
Autor responsável pela correspondência
Email: nadezhda.volkova@urfu.ru
Rússia, Yekaterinburg, 620083
L. Gavrilova
Institute of Natural Sciences and Mathematics, Ural Federal University
Email: nadezhda.volkova@urfu.ru
Rússia, Yekaterinburg, 620083
V. Cherepanov
Institute of Natural Sciences and Mathematics, Ural Federal University
Email: nadezhda.volkova@urfu.ru
Rússia, Yekaterinburg, 620083
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