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Author:

王勇 (王勇.) | 雷永平 (雷永平.) | 林健 (林健.) | 张志政 (张志政.) | 赵海燕 (赵海燕.)

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CQVIP

Abstract:

对Sn37Pb和Sn3.0Ag0.5Cu(SAC305)钎料贴装的SMT组件进行了动态拉伸载荷下的机械疲劳试验研究,结果表明,Sn37Pb焊点的疲劳寿命要高于SnAgCu305.在峰值应力为40MPa时寿命差距达到最大,前者是后者2倍~3倍.同时,还分别得出了两种焊点在50%和10%破坏率下的S-N寿命曲线.通过对两种焊点试样横截面的显微观察,发现两种焊点均主要沿着三处位置开裂,然后随着疲劳周次的增加直至裂纹贯穿整个焊点.

Keyword:

破坏率 焊点 疲劳 SMT

Author Community:

  • [ 1 ] [王勇]北京工业大学
  • [ 2 ] [雷永平]北京工业大学
  • [ 3 ] [林健]北京工业大学
  • [ 4 ] [张志政]北京工业大学
  • [ 5 ] [赵海燕]清华大学

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Source :

电子工艺技术

ISSN: 1001-3474

Year: 2009

Issue: 2

Volume: 30

Page: 63-65,69

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count: 6

Chinese Cited Count:

30 Days PV: 0

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