| Sn-9Zn系无铅焊料钎焊接头剪切性能的研究 |
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| 引用本文： | 吕娟,赵麦群,康晶,吕海霞,佟玉飞.Sn-9Zn系无铅焊料钎焊接头剪切性能的研究[J].金属功能材料,2010,17(3):72-75. |
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| 作者姓名： | 吕娟 赵麦群 康晶 吕海霞 佟玉飞 |
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| 作者单位： | 1. 西安理工大学材料科学与工程学院,陕西,西安,710048
2. 长庆油田第一采气厂工艺研究所,陕西,靖边,718500 |
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| 基金项目： | 陕西省自然科学研究计划项目基金 |
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| 摘 要： | 利用扫描电镜及万能材料实验机研究了Sn-9Zn/Cu钎焊接头的界面形貌及Sn-9Zn焊料微合金化前后钎焊接头的剪切性能变化。结果表明,Sn-9Zn/Cu界面金属间化合物为Cu5Zn8,界面层呈平整的锯齿状。由于焊接时没有保护气氛,以致Sn-9Zn氧化而使剪切性能变差,而同时添加微量RE和Ag或RE和Al元素后剪切强度大幅度增高,尤其是添加0.025%RE和0.3%Ag时剪切强度可提高46.47%,同时添加元素后剪切断口韧性断裂趋势增大。
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| 关 键 词： | 无铅焊料 界面形貌 剪切性能 微合金化 |
Study on Shear Property of Brazed Joints of Sn-9 Zn System Lead-free Solders |
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| L Juan,ZHAO Mai-qu,KANG Jing,L Hai-xia,TONG Yu-fei.Study on Shear Property of Brazed Joints of Sn-9 Zn System Lead-free Solders[J].Metallic Functional Materials,2010,17(3):72-75. |
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| Authors: | L Juan ZHAO Mai-qu KANG Jing L Hai-xia TONG Yu-fei |
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| Affiliation: | L(U) Juan,ZHAO Mai-qu,KANG Jing,L(U) Hai-xia,TONG Yu-fei |
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| Abstract: | By means of scanning electron microscope and universal material machine,the interfacial morphology of Sn-9Zn brazed joint was observed,meanwhile,the shear properties of brazed joint of Sn-9Zn system solder were studied.The results show that interface layer（IMC） between Sn-9Zn solder and Cu is leveling serrate consisting of Cu5Zn8.The oxidation of Sn-9Zn decreased its shear property without gas protection.Simultaneous addition of rare RE and Ag or RE and Al could greatly improve the shear strength of brazed joints,especially when adding 0.025%RE and 0.3%Ag,the shear strength could improve 46.47%.And the toughness fracture features of solder shear fracture surface were increased with the addition of these elements. |
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| Keywords: | lead-free solder interfacial morphology shear property micro-alloying |
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