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温度梯度作用下的Ni/Sn/Cu焊点界面反应分析

漆琳,卫国强,刘恒林

漆琳,卫国强,刘恒林. 温度梯度作用下的Ni/Sn/Cu焊点界面反应分析[J]. 焊接学报, 2017, 38(10): 71-74. DOI: 10.12073/j.hjxb.20151210004
引用本文: 漆琳,卫国强,刘恒林. 温度梯度作用下的Ni/Sn/Cu焊点界面反应分析[J]. 焊接学报, 2017, 38(10): 71-74. DOI: 10.12073/j.hjxb.20151210004

温度梯度作用下的Ni/Sn/Cu焊点界面反应分析

  • 摘要: 采用Ni/Sn/Cu互连焊点作为研究对象,在不涉及电迁移效应条件下,设置温度梯度为TG=1 046℃/cm,研究在热迁移作用下镍为热端、铜为冷端时界面金属间化合物(intermetallic compound,简称IMC)的显微组织变化. 结果表明,随着热迁移加载时间的增加,冷、热两端界面IMC的厚度都增加,但冷端界面IMC的生长速率大于热端.EDS分析表明,界面IMC是(Cu,Ni)6Sn5相,并且热端IMC中的Ni元素含量高于冷端. 另外,在冷端的界面(Cu,Ni)6Sn5相中观察到大量的空洞,且在(Cu,Ni)6Sn5/Cu界面之间没有观察到Cu3Sn.
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    其他类型引用(5)

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出版历程
  • 收稿日期:  2015-12-09

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