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Phase formation in the Ag3VO4-ScVO4 quasi-binary system |
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| Authors: | O. I. Solov’ev D. A. Rusakov A. A. Filaretov L. N. Komissarova |
| Affiliation: | 1. Faculty of Materials Sciences, Moscow State University, Moscow, 119991, Russia 2. Chemical Faculty, Moscow State University, Moscow, 119991, Russia 3. Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, Moscow, 119991, Russia |
| Abstract: | Subsolidus phase formation in the Ag3VO4-ScVO4 quasi-binary system was studied using X-ray powder diffraction and DTA in air under atmospheric pressure over the entire range of component concentrations in 5 mol % steps between 20 and 800°C. Two compounds were found to form: Ag3Sc(VO4)2 and Ag3Sc2(VO4)3, both melting incongruently at 750 ± 5 and 960 ± 5°C, respectively. A T-x diagram of the Ag3VO4-ScVO4 quasi-binary system was constructed. A eutectic (T m = 450 ± 5°C) is between the compounds Ag3VO4 and Ag3Sc(VO4)2; Ag3VO4 concentration is ～5 mol %. |
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