复合丝材制备技术进展  

Progress in Preparation Technology of Clad Wire

作　　者：陈亚 戴华[1] 赖文发 杨丽娟[1] 牛海东 万吉高[1] 刘毅[1] 武海军[1] CHEN Ya;DAI Hua;LAI Wen-fa;YANG Li-juan;NIU Hai-dong;WAN Ji-gao;LIU Yi;WU Hai-jun(Kunming Institute of Precious Metals,State Key Laboratory of Advance Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co.Ltd.,Kunming 650106,China)

机构地区：[1]昆明贵金属研究所,贵研铂业股份有限公司稀贵金属综合利用新技术国家重点实验室,昆明650106

出　　处：《贵金属》2020年第2期75-81,95,共8页Precious Metals

基　　金：云南省重大科技项目(202002AB080001-1);两机专项重大项目(2017-V-0003-0053)。

摘　　要：在复合丝材的制备过程中,界面附近原子互扩散形成具有一定宽度的扩散层,扩散层由金属间化合物和固溶体组成,金属间化合物的种类和数量由热处理温度和时间决定。适当的互扩散对提高复合丝材界面结合强度是有利的,但过多金属间化合物会导致复合丝电导率、延伸率下降,甚至引起超细复合丝覆层脱落,严重影响复合丝材的可加工性。因此,界面问题是复合丝材制备过程中的关键问题。系统介绍了复合线材的种类、成型方法及研究现状,重点论述了扩散层界面物相及其对复合线材性能的影响,对开发新型复合线材的成型工艺及性能研究提供参考。In the preparation process of clad wire,the atoms near the interface inter-diffused to form a diffusion layer with a certain width.The diffusion layer consists of intermetallic compounds and solid solution,and the types and quantities of intermetallic compounds are determined by heat treatment temperature and time.Appropriate interdiffusion is beneficial to improve the bonding strength of clad wires,but too many intermetallic compounds will lead to a decrease in the conductivity and elongation of the clad,and even cause the coating peeling off of the superfine clad wire,which seriously affects the machinability of the clad wire.The types,forming methods and research status of clad wires are systematically introduced,and the interfacial phase of diffusion layer and its influence on the properties of clad wires are emphatically discussed,providing a reference for the development of forming technology and performance research of a novel clad wire.

关 键 词：复合线材 界面扩散 金属间化合物 多道次拉拔 

分 类 号：TG146.3[一般工业技术—材料科学与工程]