镀钯Cu线力学性能对键合点形貌及强度的影响  

Effects of Mechanical Properties of Pd-plated Copper Wire on Morphologies and Strength of Bonding Points

作　　者：范俊玲[1] 何芳[1] 曹军[2] 原东林[1] 吴雪峰[2] 杨雪梅[1] 姚巧玲 Fan Junling;He Fang;Cao Jun;Yuan Donglin;Wu Xuefeng;Yang Xuemei;Yao Qiaoling(Chemical and Environmental Engineering,Jiaozuo University;School of Mechanical and Power Engineering,Henan Polytechnic University)

机构地区：[1]焦作大学化工与环境工程学院,河南焦作454000 [2]河南理工大学机械与动力工程学院

出　　处：《特种铸造及有色合金》2023年第9期1261-1265,共5页Special Casting & Nonferrous Alloys

基　　金：河南省科技计划资助项目(222102230014);河南省高等职业学校青年骨干教师培养项目(2020GZGG057)。

摘　　要：利用扫描电镜、强度测试仪、拉力-剪切力测试仪等研究了镀钯Cu线力学性能对其球焊点和楔焊点形貌、键合强度的影响及影响机理。结果表明,当Ф0.020 mm镀钯Cu线伸长率低于6%时,球焊点颈部产生裂纹,楔焊点变形量过小,键合面积缩小,球焊点和楔焊点拉力值均降低。当镀钯Cu线伸长率高于16%,球焊点形貌不规则程度增大,楔焊点颈部出现微小裂纹,并出现塌丝现象。当镀钯Cu线伸长率为12%~15%时,球焊点/楔焊点形貌一致性好,键合强度及稳定性较好,满足使用要求。The effect and mechanism of mechanical properties of Pa-plated copper wire on morphology and bonding strength of ball-bonded and wedge-bonded points were investigated by SEM,strength tester and tension-shear force tester.The results indicate that when the elongation ofФ0.020 mm Pa-plated copper wire is less than 6%,the neck of ball-bonded point is cracked,and the deformation and bonding area of wedge-bonded point are excessively small,so the tension value of ball-bonded and wedge-bonded point are reduced.When the elongation is higher than 16%,the irregularity degree of morphology is increased,and minor cracks appear at neck of wedge point,so bonged wire is collapsed.When the elongation range is 12%~15%,the morphology of ball-or wedgebonded points is in good consistency,where the bonding strength and stability are desirable,meeting the requirements of industrial application.

关 键 词：镀钯Cu线 伸长率 拉断力 键合 键合强度 

分 类 号：TG249.7[金属学及工艺—铸造] TG113.25