Sc2S3–Cu2S phase diagram

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• 作者：I. A. Razumkova ; O. V. Andreev
• 刊名：Russian Journal of Inorganic Chemistry
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：61
• 期：8
• 页码：1035-1040
• 全文大小：858 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Inorganic Chemistry
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1531-8613
• 卷排序：61

文摘

A phase diagram is constructed for the Sc₂S₃–Cu₂S system. The system forms two incongruently melting complex sulfides: hexagonal CuScS₂ (1Cu₂S: 1Sc₂S₃): a = 0.3734 nm, c = 0.6102 nm, space group P3m1, Т_m = 1635 K, ΔH_m = 1670 kJ/mol; and cubic CuSc₃S₅ (1Cu₂S: 3Sc₂S₃), a = 1.0481 nm, space group Fd3m, Т_m = 1835 K. In the 45–62 mol % Cu2S solid solution (ss) range, there is a singular point corresponding to the composition of compound CuScS₂ (50 mol % Cu₂S). The Sc₂S₃-based solubility at 1070 K is 14 mol % Cu₂S. In the γ-Cu₂S-based solid solution range, there is a peritectic point at 7 mol % Sc₂S₃, 1423 K.Original Russian Text © I.A. Razumkova, O.V. Andreev, 2016, published in Zhurnal Neorganicheskoi Khimii, 2016, Vol. 61, No. 8, pp. 1087–1092.