Ag10CuZnSn-xIn-yCe低银钎料组织及性能  

Microstructure and properties of Ag10CuZnSn-xIn-yCe low silver filler metal

作　　者：徐佳琛 傅玉灿[2] 杨燕 李镇 何智勇 贾允 XU Jiachen;FU Yucan;YANG Yan;LI Zhen;HE Zhiyong;JIA Yun(School of Electrical Engineering,Nanjing Vocational University of Industry Technology,Nanjing,210023,China;College of Mechanical&Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing,210016,China;Contemporary Amperex Intelligence Technology(Shanghai)Limited,Shanghai,201306,China)

机构地区：[1]南京工业职业技术大学,电气工程学院,南京210023 [2]南京航空航天大学,机电学院,南京210016 [3]宁德时代(上海)智能科技有限公司,上海201306

出　　处：《焊接学报》2024年第6期113-120,共8页Transactions of The China Welding Institution

基　　金：南京工业职业技术大学引进人才科研启动基金资助项目(YK21-02-05)。

摘　　要：通过向Ag10CuZnSn低银钎料中添加微量的In元素和Ce元素,研究了In元素和Ce元素的复合添加对低银钎料的固相线温度液相线温度和铺展性能的影响,同时分析了两种合金元素对Ag10CuZnSn钎料的显微组织及钎焊接头力学性能的影响规律.结果表明,微量In元素和Ce元素的添加可以显著地降低Ag10CuZnSn低银钎料的固相线和液相线温度,同时可以提高Ag10CuZnSn钎料在T2紫铜和304不锈钢基板上的铺展面积,当In元素和Ce元素的质量分数分别为1.5%和0.15%时,钎料在T2紫铜和304不锈钢上的铺展面积分别提升了21.1%和35.7%. In元素和Ce元素可以改善低银钎料的显微组织,当In元素和Ce元素的质量分数分别为1.5%和0.15%时,Ag10CuZnSn低银钎料显微组织的细化作用最为明显,此时304不锈钢钎焊接头的抗剪强度也达到最大值,为375 MPa.然而,质量分数3%的In元素和质量分数0.5%的Ce元素会在Ag10CuZnSn钎料的显微组织中形成脆性的Ag-In-Sn金属间化合物相和Sn-Ce稀土相,钎焊接头的抗剪强度也有所降低.By adding trace elements of In and Ce into Ag10CuZnSn low-silver filler metal,the effects of the combined addition of In and Ce on the solidus and liquidus temperature and spreading performance of low-silver filler metal were studied,and the effects of two alloying elements on the microstructure of Ag10CuZnSn filler metal and the mechanical properties of brazed joint were analyzed.The results showed that the addition of trace elements of In and Ce could significantly reduce the solidus and liquidus temperature of Ag10CuZnSn low-silver filler metal,and also increase the spreading area of Ag10CuZnSn filler metal on T2 copper and 304 stainless steel base metals.When the contents of In and Ce were 1.5%and 0.15%respectively,the spreading areas of the filler metal on T2 copper and 304 stainless steel increased by 21.1%and 35.7%respectively.Besides,the In and Ce elements could refine the microstructure of the filler metals.When the contents of In and Ce elements were 1.5%and 0.15%respectively,the microstructure refinement of Ag10CuZnSn low silver filler metal was the most obvious,and at this time,the shear strength of 304 stainless steel brazed joint also achieved a maximum value of 375 MPa.However,3%In and 0.5%Ce would form brittle Ag-In-Sn intermetallic compound phase and Sn-Ce rare earth phase in the microstructure of Ag10CuZnSn filler metal,and the shear strength of the brazed joint would be reduced.

关 键 词：低银钎料 熔化特性 铺展性能 显微组织 力学性能 

分 类 号：TG425[金属学及工艺—焊接]