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| 纳米铝颗粒增强Sn1.0Ag0.5Cu钎料性能及机理 |
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孙磊, 陈明和, 谢兰生, 张亮, 朱建东1,2,3
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1. 南京航空航天大学 机电学院, 南京 210016;2.
2. 江苏师范大学 机电工程学院, 徐州 221116;3.
3. 哈尔滨工业大学 先进焊接与连接国家重点实验室, 哈尔滨 150001
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| 摘要: |
| 通过机械混合的方法，制备Sn1.0Ag0.5Cu-xAl复合钎料.采用DSC、STR-1000型微焊点强度测试仪及SEM，研究了纳米铝颗粒对低银Sn1.0Ag0.5Cu钎料组织与性能的影响.结果表明，微量纳米铝颗粒的添加对钎料的熔化温度影响较小，其熔点均在226.9~229.0℃之间.随着纳米Al元素含量的增加，钎料的润湿角逐渐减小，力学性能逐渐增加，当纳米Al元素的添加量为0.1%时，焊点的拉伸力达到最大，为7.1 N.此外，Sn1.0Ag0.5Cu-0.1Al钎料的内部组织得到显著细化，焊点界面金属间化合物的生长也得到明显抑制，主要归因于纳米颗粒对金属间化合物生长的吸附作用. |
| 关键词: 纳米铝颗粒 润湿性能 金属间化合物 吸附作用 |
| DOI：10.12073/j.hjxb.2018390199 |
| 分类号:TG425.1 |
| 基金项目:国家自然科学基金资助项目（51475220）；江苏省“六大人才高峰”高层次人才资助项目（XCL022）；江苏省“青蓝工程”中青年学术带头人计划；新型钎焊材料与技术国家重点实验室开放课题资助项目（郑州机械研究所SKLABFMT201503）；南京航空航天大学博士学位论文创新与创优基金（BCXJ18-06）；江苏省研究生科研与实践创新计划资助项目（KYCX18_0318） |
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| Properties and mechanism of nano Al particles reinforced Sn1.0Ag0.5Cu solders |
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SUN Lei, CHEN Minghe, XIE Lansheng, ZHANG Liang, ZHU Jiandong1,2,3
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1. College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2.
2. School of Mechanical and Electrical Engineering, Jiangsu Normal University, Xuzhou 221116, China;3.
3. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
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| Abstract: |
| Sn1.0Ag0.5Cu-xAl composite solders were prepared by mechanically mixing method. The effect of nano Al particles on the microstructure and properties of Sn1.0Ag0.5Cu solder were investigated by differnetial scanning calorimetry, STR-1000 micro-joint strength tester and SEM. The results showed that adding nano Al particles does not cause a considerable change in the melting temperature. All samples ranged from 226.9 to 229℃. With the addition of nano Al particles, the wetting angle was decreased and mechanical property was increased. When the addition of nano Al particles was 0.1%, the pull force of solder joint reached the maximum, which was 7.1 N. In addition, the microstructure of Sn1.0Ag0.5Cu-0.1Al solder was significantly refined, and the thickness of interfacial intermetallic compounds (IMC) was effectively inhibited, which may attributed to the adsorption of nanoparticles. |
| Key words: nano Al particles wettability IMC adsorption |
