Thermodynamic Assessment of the Scandium-Gold Binary System

• 作者: D.Moustaine K.Mahdouk
• 来源期刊: 材料科学与工程:中英文B版
• 学科: 工学
• 关键词: PHASE DIAGRAM THERMODYNAMIC assessment CALPHAD method THERMODYNAMIC modeling
• 年，卷（期）: 2019,（4）
• 页码范围: 123-132
• 页数: 10页
• 分类号: TG1

摘要

The phase diagram and thermodynamic properties of the Sc-Au system were carried out by means of the CALPHAD(calculation of phase diagrams)method through Thermo-Calc software package on the basis of the experimental data of phase equilibria and thermodynamic proprieties from the published literature data.The excess Gibbs energies functions of the solution phases including liquid,face–centered cubic fcc_A1,body-centered hexagonal close–packed hcp_3 and cubic bcc_A2,modeled with Redlich-Kister polynomials functions while all intermetallic compounds have been treated as stoichiometric compounds.The thermodynamic parameters describing various phases in the Sc-Au binary system were finally obtained,and a good agreement is achieved between the calculated results and the reported experimental data.