| LD31铝合金电刷镀SnPb钎料合金软钎焊 |
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| 引用本文： | 赵振清,王春青,杜淼,黄毅.LD31铝合金电刷镀SnPb钎料合金软钎焊[J].焊接学报,2005,26(7):67-70,74. |
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| 作者姓名： | 赵振清 王春青 杜淼 黄毅 |
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| 作者单位： | 哈尔滨工业大学,哈尔滨,150001;哈尔滨焊接研究所,哈尔滨,150080 |
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| 摘 要： | 采用在LD31表面电刷镍阻挡层、铜改性层，将LD31铝合金的连接转化为铜的连接，在镀铜层的表面电刷镀SnPb钎料直接进行钎焊，通过开发低应力镀镍液和调整电刷镀工艺参数解决镍过渡层的裂纹问题，研究分析了镀层的显微结构及表面状态，焊缝的结构及元素分布，考察了焊接加热过程对镀层的影响。研究表明，通过在镀铜层表面直接刷镀SnPb钎料合金可以实现软钎焊连接，接头的抗剪强度可达20MPa，镀镍层、镀铜层钎焊后无裂纹、剥离等缺陷产生。
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| 关 键 词： | LD31铝合金 电刷镀 镀层 钎焊 |
| 文章编号： | 0253-360X(2005)07-67-05 |
| 收稿时间： | 2004/12/13 0:00:00 |
Soldering of LD31 aluminum alloy with electro brush plated Sn-Pb alloys |
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| ZHAO Zhen-qing,WANG Chun-qing,DU Miao and HUANG Yi.Soldering of LD31 aluminum alloy with electro brush plated Sn-Pb alloys[J].Transactions of The China Welding Institution,2005,26(7):67-70,74. |
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| Authors: | ZHAO Zhen-qing WANG Chun-qing DU Miao and HUANG Yi |
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| Affiliation: | ZHAO Zhen-qing~1,WANG Chun-qing~1,DU Miao~2,HUANG Yi~1 |
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| Abstract: | The bonding of LD31 aluminum alloy with electron brush plated Sn-Pb solder after the deposition of Ni and Cu transient layers was investigated in this paper. The influence of electric deposition parameters of SnPb alloy on the coating quality and subsequent solderability was studied. The constitution of coatings, the morphology of Sn-Pb coating, the bonding mechanism in the soldering and the elements distribution in the soldered joint were studied by scanning electron microscope, energy dispersive X-ray analysis and metallographic analysis. The results of soldering experiment showed that after the deposition of Ni and Cu coatings, the bonding of LD31 aluminum alloy could be transformed to the bonding of copper, and the bonding of coatings could bear the heating condition in the soldered. The shear strength of the soldered joint could reach as high as 20 MPa. |
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| Keywords: | LD31 aluminum alloy electron brush plating coating soldering |
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