Thermodynamic Optimization of the Cu-Se System

摘要：

The Cu-Se system was optimized by means of the CALPHAD technique. Considering two miscibility gaps of the liquid existed in two sides of the compound Cu2Se, the associate model with the associate species Cu2Se was adapted to describe the Gibbs energy for the liquid and compared to the random solution model. The optimizing results showed that thermodynamic model describing the liquid phase as a solution Cu, Se and a Cu2Se associate fit well with the experimental data. The intermetallic compounds, Cu3Se2, αCuSe, βCuSe, γCuSe and CuSe2 were treated as stoichiometric compounds. The compounds αCu2Se and βCu2Se, which have a homogeneity range, were treated as the formulae α(Cu,Se)2Se and β(Cu,Se)2Se by a two-sublattice model. A set of self-consistent thermodynamic parameters of the Cu-Se system was obtained.

关键词： Cu-Se system Associate model CALPHAD technique

作者: Mei Tao Zhenmin Du Cuiping Guo Changrong Li Liping Yan

作者单位: Department of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

会议类型: 国际会议

会议名称: The 13th National Symposium on Phase Diagrams China-Japan Joint Symposium on Phase Diagrams,Materials Design and Their Applications(第十三届全国相图学术会议暨中日双边相图、材料设计及其应用研讨会)

会议地点: 厦门

会议语种:英文

页码: 111-116

在线出版日期: 2006-11-08（万方平台首次上网日期，不代表论文的发表时间）