Ge对SnAgCu／Cu钎焊接头抗剪强度与断口的影响
Effect of germanium on shearing strength and fracture surface of SnAgCu/Cu soldering joint
查看参考文献12篇
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文摘
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在化学元素周期表中Ge元素与Sn元素相邻，同为第Ⅳ主族元素，物理与化学性能有许多近似。文中在无铅钎料Sn2．5Ag0．7Cu中添加少量Ge元素（0．25，0．5，0．75，1．0，质量分数，％），设计、焊接了剪切试样，测试了接头抗剪强度，并且对断口做了扫描电镜和能谱分析。结果表明，添加少量Ge元素以后，接头的抗剪强度有显著提高；接头的断裂形式主要是韧性断裂，并且大都有二次裂纹；添加Ge元素后在剪切断口表面形成很多韧窝；金属间化合物Cu6Sn5对韧窝的形成有一定的作用。 |
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其他语种文摘
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In Periodic Table of the Elements,germanium(Ge) is adjacent to tin.They are both the elements in the main group Ⅳ and resemble each other in physical and chemical property.A little element Ge was added into lead-free solder Sn2.5Ag0.7Cu(0.25,0.5,0.75,1.0 wt%),and the shear test specimens were designed and welded.The joint shearing strengths were measured and fracture surfaces were analyzed by scanning electron microscope and energy dispersive X-ray analysis method.The result indicates that the shearing strength of the joint increases obviously.The joint fracture forms of the Sn-Ag-Cu-Ge lead-free solder are mainly ductile fracture,and most of them have secondary cracks.Lots of dimples formed on the fracture surface when adding element Ge,and IMC Cu6Sn5 play a part on the dimple forming. |
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来源
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焊接学报
,2008,29(9):59-62 【核心库】
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关键词
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无铅钎料
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抗剪强度
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断口
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锗
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地址
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1.
哈尔滨理工大学材料科学与工程学院, 黑龙江, 哈尔滨, 150040
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中国科学院金属研究所, 辽宁, 沈阳, 110016
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安徽科技学院, 安徽, 蚌埠, 233100
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0253-360X |
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学科
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金属学与金属工艺 |
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文献收藏号
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CSCD:3394581
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