Thermodynamic description of Au-Ag-Si ternary system

摘要：

Based on the available experimental information,the Ag-Si binary system was thermodynamically assessed using the CALPHAD method.The solution phases,including liquid,fcc-A1 and diamond-A4,were modeled as substitutional solutions,of which the excess Gibbs energies were expressed by Redlich-Kister polynomial functions.Combined with previous assessment of the Ag-Au and Au-Si binary systems,thermodynamic description of the Au-Ag-Si ternary system was performed to reproduce the reported phase equilibria.Thermodynamic properties of liquid alloys,liquidus projection and several vertical and isothermal sections of this ternary system were calculated,which are in reasonable agreement with the reported experimental data.

关键词： thermodynamics phase diagram CALPHAD Ag-Si binary system Au-Ag-Si ternary system

作者: WANG Jiang LIU Hua-shan LIU Li-bin JIN Zhan-peng

作者单位: School of Materials Science and Engineering,Central South University,Changsha 410083,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）