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Abstract:
针对印刷电路板(PCB)上无铅钎料SnAgCu微小焊点的结晶裂纹,利用设计的试件重现无铅钎料钎焊过程中产生的结晶裂纹,对无铅钎料结晶裂纹进行模拟,同时研究了微量元素的添加对SnAgCu合金焊点结晶裂纹形成的影响。结果表明,在尺寸很小的焊点上仍然存在明显的结晶裂纹。用焊点结晶裂纹的总长度定量地评价无铅钎料结晶裂纹的敏感倾向,添加Ni和Ce元素能够降低无铅钎料结晶裂纹的形成,而P元素的添加却加剧了结晶裂纹的形成,明显增加了焊点处的结晶裂纹。
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Source :
焊接学报
Year: 2008
Issue: 12
Volume: 29
Page: 61-63,68,116
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 7
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