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| Sn-Zn-Ga-xPr钎料组织与性能 | |
| 引用本文： | 李阳,薛松柏,杨晶秋,叶焕,陈澄,顾立勇,顾文华. Sn-Zn-Ga-xPr钎料组织与性能[J]. 焊接学报, 2012, 33(5): 33-36 |
| 作者姓名： | 李阳 薛松柏 杨晶秋 叶焕 陈澄 顾立勇 顾文华 |
| 作者单位： | 1. 南京航空航天大学材料科学与技术学院,南京,210016 2. 哈尔滨焊接研究所,哈尔滨,150080 3. 常熟市华银焊料有限公司,常熟,215513 |
| 基金项目： | 2010年度“江苏省企业研究生工作站”资助项目 |
| 摘 要： | 研究了添加合金元素Ga及稀土元素Pr对Sn-Zn钎料组织与性能的影响.适量添加镨,可以提高钎料的润湿性能;但当镨含量超过0.12%(质量分数)时,镨会在钎料表面形成氧化渣,恶化钎料的润湿性能.镨的添加可以改善焊点的力学性能,抗剪强度在镨含量为0.08%时增加至最大.镨加入后细化了钎料基体中的富锌相,当镨含量不超过0.08%时,界面层平整且厚度变化不大,但若稀土添加过量,则界面层会明显增厚.镨在Sn9Zn0.5Ga钎料中的最佳添加量为0.08%左右. |
| 关 键 词： | SnZn钎料 润湿性 力学性能 显微组织 |
| 收稿时间： | 2011-11-30 |
Microstructure and properties of Sn-Zn-Ga-xPr lead-free solder |
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| LI Yang,XUE Songbai,YANG Jingqiu,YE Huan,CHEN Cheng,GU Liyong and GU Wenhua. Microstructure and properties of Sn-Zn-Ga-xPr lead-free solder[J]. Transactions of The China Welding Institution, 2012, 33(5): 33-36 | |
| Authors: | LI Yang XUE Songbai YANG Jingqiu YE Huan CHEN Cheng GU Liyong GU Wenhua |
| Affiliation: | 1.College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;2.Harbin Welding Institute,Harbin 150080,China;3.Changshu Huayin Filler Metals Co.,Ltd,Changshu 215513,China) |
| Abstract: | Effects of rare earth element Pr additions on the microstructure and properties of Sn-Zn-Ga solder were studied in this paper.The wettability of solder was significantly improved by 0.08%Pr addition.However,the wettability of solder would deteriorate when the Pr addition exceeds 0.12% due to the oxidization of Pr element at the liquid surface.Moreover,the mechanical property of solder joint was improved by Pr addition and the maximum shear strength was obtained when 0.08% Pr was added.The Zn-rich phase in the solder matrix was refined by Pr but the thickness of interface layer showed no obvious difference when Pr was less than 0.08%.When excessive Pr was added,the interface layer thickness of the joint increased significantly,so that the optimal content of Pr in the Sn9Zn0.5Ga solder is about 0.08%. |
| Keywords: | Sn-Zn fill metal wettability mechanical properties microstructure |
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