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材料工程  2009 

纳米结构强化的新型Sn-Ag基无铅复合钎料

Keywords: POSS增强颗粒,熔化特性,润湿性,力学性能

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Abstract:

通过外加法向Sn-3.5Ag钎料中加入质量分数为1%,2%和3%的纳米级多面齐聚倍半硅氧烷(polyhedraloligomericsilsesquioxanes,POSS)颗粒制备无铅复合钎料.系统研究POSS颗粒的显微组织,钎料的熔化特性、润湿性能和力学性能.结果表明POSS颗粒的加入并没有改变Sn-Ag基复合钎料熔化温度.复合钎料的铺展面积均有所增加,润湿角有所下降,表现了良好的润湿性.POSS颗粒的加入显著提高钎料钎焊接头的剪切强度.

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