Zn-Al系钎焊材料的研究进展  

Research Progress of Zn-Al Brazing Materials

作　　者：陈晨 张亮 王曦 李木兰 CHEN Chen;ZHANG Liang;WANG Xi;LI Mulan(School of Mechatronic Engineering,Jiangsu Normal University,Xuzhou 221116,Jiangsu,China)

机构地区：[1]江苏师范大学机电工程学院,江苏徐州221116

出　　处：《材料导报》2023年第22期138-150,共13页Materials Reports

基　　金：江苏省自然科学基金(BK20211351)。

摘　　要：Cu因其优良的力学性能、延展性能等而被广泛用于电子、机械等领域。但Cu同样作为世界性稀缺资源,尤其是我国十分依赖进口。为降低制造成本,寻找其他金属代替Cu成为当今的研究热潮。我国Al资源较为丰富,以Al代Cu能显著减少构件质量和成本消耗。然而,由于二者物理性能差异较大,在结合界面处易产生较大残余应力,影响连接件的可靠性。而传统的焊接方法温度较高,易导致Al侧软化和变形。诸多行业面临着Al连接困难的问题。因此,研究者们注意到一种具有很大应用潜能的钎料——Zn-Al钎料,通过改变Al含量,能控制其熔化温度,较为灵活地满足不同情况下的焊接需求,十分契合Cu/Al等金属的连接。本文针对Zn-Al钎料的研究现状,综合评述了其合金化方面的研究进展及发展趋势,主要从显微组织、力学性能等方面对现有研究成果进行分析总结,同时指出所存在的问题,并针对今后研究工作进行分析和展望,期望Zn-Al钎料能早日解决Cu/Al等连接的问题,以达到缓解Cu资源紧张、节省生产成本的目的。Cu is widely used in electronics,machinery and other fields because of its excellent mechanical properties and ductility.Nevertheless,as a worldwide scarce resource,especially in China,we are dependent on imports to a large extent.In order to reduce the cost of manufactu-ring,it is finding other metals to replace Cu that has become a hot research trend.Fortunately,Al resources are abundant in China,with which the weight and cost of components can be significantly reduced compared with those of Cu.However,due to the large difference in physical properties between them,the residual stress is easy to be generated at the interface,which affects the reliability of the connector.Additionally,the temperature of traditional welding method is relatively high,which easily leads to the softening and deformation near the Al side.Quite a few industries are faced with the problem of Al connection difficulty.Therefore,researchers have noticed a kind of filler metal with great potential for application——Zn-Al solder.The melting temperature can be controlled by changing the Al content,which is more flexible to meet the welding requirements under different circumstances,and quite suitable for the connection of Cu/Al and other metals.In this paper,the research progress and development trend of Zn-Al filler metal alloying are reviewed.The existing research results are analyzed and summarized from the aspects like microstructure and mechanical properties.In the meanwhile,the existing issues are pointed out,and the future research work is anatomized and prospected.It is expected that Zn-Al filler metal can solve the problems of Cu/Al connection as soon as possible,so as to alleviate the shor-tage of Cu resources and reduce production cost.

关 键 词：Cu资源稀缺 ZN-AL钎料 金属连接 显微组织 力学性能 

分 类 号：TG425[金属学及工艺—焊接]