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Thermodynamic Re-assessment of the Ag-Ni-Sn system

作     者:Liao, Lin Liu, Yanwen Liu, Shuhong Jin, Bo Du, Yong 

作者机构:Cent South Univ Natl Key Lab Sci & Technol High strength Struct Ma Changsha 410083 Peoples R China 

出 版 物:《CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY》 (相图计算;相图计算机耦合与热化学)

年 卷 期:2022年第79卷

核心收录:

学科分类:081704[工学-应用化学] 07[理学] 0806[工学-冶金工程] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程(可授工学、理学学位)] 0703[理学-化学] 

基  金:Major Science and Technology Project of Precious Materials Genetic Engineering in Yunnan province [202002AB08001-1] Sino-Platinum Metals co 

主  题:Ag-Ni-Sn CALPHAD Phase diagram Thermodynamic property Liquidus projection 

摘      要:The ternary Ag-Ni-Sn and the constituent binary Ag-Sn and Ni-Sn systems were critically re-assessed consid-ering the available experimental data based on the CALPHAD (CALculation of PHAse Diagram) method. Ther-modynamic descriptions of both Ag-Sn and Ni-Sn systems were obviously improved in comparison with the previous reports, especially in the heat capacity of Ag3Sn and enthalpy of mixing of Ag-Sn liquid, as well as the homogeneity range of Ni3Sn4 and the temperature dependent enthalpy of mixing of Ni-Sn liquid. Based on the updated thermodynamic description for the binary systems, a set of self-consistent thermodynamic parameters for the Ag-Ni-Sn system was then obtained. Comprehensive comparisons between the calculated results and experimental data on thermodynamic properties, isothermal and vertical sections as well as invariant reactions indicated the reliability and accuracy of the present thermodynamic parameters. Liquidus projection and the scheil reaction scheme of the entire composition range were also presented correspondingly.

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