Au-Pd-Zr合金的相图计算及实验验证  

Phase Diagram Calculation and Experimental Research on Au-Pd-Zr Alloys

作　　者：陈守东[1] 刘琳静[1] 陈敬超[1] 吕连灏[1] 

机构地区：[1]昆明理工大学稀贵及有色金属先进材料教育部重点实验室云南省新材料制备与加工重点实验室,云南昆明650093

出　　处：《稀有金属材料与工程》2013年第3期541-544,共4页Rare Metal Materials and Engineering

基　　金：新国家自然科学联合基金(u0837601;50874054);云南省创新团队(2009CI003);云南省自然科学基金(2008CD087)

摘　　要：利用相图计算软件Pandat计算了Au-Pd-Zr合金的液相面投影图、室温(25℃)的等温截面图、xAu-xPd-Zr合金系的垂直截面图,同时选取了36Au-36Pd-28Zr(at%)合金,基于相图计算与实验验证相结合的方法,研究了该合金的相平衡以及凝固过程。利用光学显微镜、扫描电镜、能谱仪对该合金的室温平衡相组成进行了验证。结果表明,相平衡热力学计算结果与实验结果比较吻合,36Au-36Pd-28Zr合金的凝固顺序为:L→L+Pd3Zr→L+Pd3Zr+ZrAu2→Pd3Zr+ZrAu2+ZrAu3。The phase diagram,liquidus projection and isothermal section（25 ℃） of Au-Pd-Zr system alloys and vertical section of xAu-xPd-Zr system were calculated by Calphad soft ware Pandat and the phase equilibria and solidification sequence of the alloy 36Au-36Pd-28Zr were compared with the experimental results of OM,SEM and EDS.The results show that the calculated thermodynamic results of phase equilibria agree well with the experimental results.The solidification sequence of 36Au-36Pd-28Zr is as following：L→L＋Pd 3 Zr→L＋Pd 3 Zr＋ ZrAu 2→Pd 3 Zr＋ZrAu2＋ ZrAu3.

关 键 词：相图计算 Pandat软件 Au-Pd-Zr相图 36Au-36Pd-28Zr合金 

分 类 号：TG146.31[一般工业技术—材料科学与工程]