Co-Cu-Zn三元系相平衡的实验研究  

Study of Phase Equilibria in the Cu-Co-Zn Ternary System

作　　者：王翠萍[1] 吴超[1] 邓育灵 张锦彬[1] 杨木金 杨水源[1] 韩佳甲[1] 卢勇[1] 刘兴军[1,2] Wang Cuiping;Wu Chao;Deng Yuling;Zhang Jinbin;Yang Mujin;Yang Shuiyuan;Han Jiajia;Lu Yong;Liu Xingjun(College of Materials and Fujian Provincial Key Laboratory of Materials Genome,Xiamen University,Xiamen 361005,China;School of Materials Science and Engineering,Harbin Institute of Technology,Shenzhen 518055,China)

机构地区：[1]厦门大学材料科学院及福建省材料基因工程重点实验室,福建厦门361005 [2]哈尔滨工业大学(深圳)材料科学与工程学院,广东深圳518055

出　　处：《稀有金属材料与工程》2020年第7期2269-2274,共6页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(51771158);Joint Fund to Promote Cross-Strait Scientific and Technological(U1605243)。

摘　　要：采用电子探针显微分析和X射线衍射分析方法研究了Co-Cu-Zn三元体系在800和1000℃时的相平衡。在这2个等温截面中均未发现三元化合物。在800℃等温截面,Co在β-CuZn相中的固溶度为32.36%,Cu在β1-CoZn相中的固溶度为5.28%。除此之外,γ-Co5Zn21和γ-Cu5Zn8具有相同的晶体结构,因此,它们之间形成了一个贯穿连续固溶体相。1000℃的等温截面中,β-CuZn相、β1-CoZn相、γ-Co5Zn21相、γ-Cu5Zn8相都消失了。随着温度从800℃上升到1000℃,液相区域增大。The phase equilibria of the Cu-Co-Zn ternary system at 800℃and 1000℃were investigated by electron probe microanalysis and X-ray diffraction.Results show that no ternary compound was found.At 800℃,the solubility of Co in theβ-CuZn,and Cu in theβ1-CoZn at 800℃are 32.36 at%and 5.28 at%,respectively.Theγ-Co5Zn21 andγ-Cu5Zn8 show that the same crystal structure,and thus an infinite region of mutual solubility is observed in the Cu-Co-Zn ternary system.It is confirmed that as the temperature rises from 800℃to 1000℃,the liquid-phase region is further expanded.The isothermal section of 1000℃is simple.The phases ofβ-Cu Zn,β1-CoZn,γ-Co5Zn21 andγ-Cu5Zn8 disappear.The region of liquid phase is very large.

关 键 词：Co-Cu-Zn三元系 相平衡 电子探针 

分 类 号：O642.42[理学—物理化学] TG42[理学—化学]