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曹军,范俊玲,高文斌.Ag-4Pd键合合金线性能和组织对键合强度的影响[J].稀有金属材料与工程(英文),2018,47(6):1836~1841.[CaoJun,Fan Junling and Gao Wenbin.Effects of Ag-4Pd alloy bonding wire properties and structure on bonding strength[J].Rare Metal Materials and Engineering,2018,47(6):1836~1841.]
Effects of Ag-4Pd alloy bonding wire properties and structure on bonding strength
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Received:May 09, 2016  Revised:July 30, 2016
DOI:
Key words: Ag-4Pd alloy bonding wire  Ru  micro-phonology  structure  strength
Foundation item:河南省科技攻关项目(2GSO64-A52-05)
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CaoJun,Fan Junling and Gao Wenbin  
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Abstract:
      The different of Ag-4Pd and Ag-4Pd-0.5Ru alloy bonding wire properties and structure were analyzed by scanning electron microscope, strength tester and thermal conductivity tester, the effects of Ru on Ag-4Pd alloy bonding wire ball size, bonded micro phonology and bonded strength were investigated. The results show that the thermal conductivity of Ag-4Pd alloy bonding wire decreases from 403 W/m?k to 385 W/m?k because of doping Ru, and the free air ball shape of Ag-4Pd-0.5Ru alloy bonding is more uniform than Ag-4Pd alloy bonding wire, the Ag-4Pd-0.5Ru alloy bonding wire bonded strength is higher than AgA1 alloy bonding wire. The heat affect zone length decreases from 50μm to 35μm because of doping Ru, and the ball neck crack defect cause of excessive long heat affect zone length will decrease. For Ag-4Pd alloy bonding wire, Ru can refine the grain, then the grain size decreases, and the grain quantity increases, then the inhomogeneous deformation of different grain decrease, and the ball bonded shape is uniform.