Sn-XAg-0.5Cu无铅钎料熔化特性、润湿性及力学性能研究

材料工程, 2010, (10): 53-56. doi: 10.3969/j.issn.1001-4381.2010.10.012

Sn-XAg-0.5Cu无铅钎料熔化特性、润湿性及力学性能研究

卫国强 ^1, , 万忠华 ^2, , 赵四勇 ^3, , 张宇鹏 ^4, , 刘凤美 ^5,

1.华南理工大学,机械与汽车工程学院,广州,510640

2.华南理工大学,机械与汽车工程学院,广州,510640

3.广州有色金属研究院,焊接材料研究所,广州,510651

4.广州有色金属研究院,焊接材料研究所,广州,510651

5.广州有色金属研究院,焊接材料研究所,广州,510651

基金项目: 国家自然科学基金(NSFC-广东联合)重点项目(U0734006) 广州市天河区科技计划项目(095G108) 广东省科技计划项目(2008A080403008-06)

关键词： Sn-XAg-Cu无铅钎料 , 熔化特性 , 润湿性 , 力学性能

Investigations on Melting Property, Wettability and Mechanical Property of Sn-XAg-0.5Cu Lead-free Solder Alloys

应用差示扫描量热(DSC)法、润湿平衡分析技术和拉伸试验,研究了Sn-XAg-0.5Cu (X=0.1～3.0)无铅钎料合金的熔化特性、润湿性能及力学性能.实验结果表明:所有钎料合金的开始熔化温度均为217.3℃;随合金中Ag含量增加,熔化温度区间变窄.钎料的润湿铺展面积和润湿力随Ag含量的增加而先显著增加,而后趋于稳定;对润湿铺展面积和润湿力(或润湿时间)产生显著影响的阈值Ag含量为1.0%( 质量分数,下同).Ag含量在0.5%～3.0%时,随着Ag含量的增加,钎料的断后伸长率逐渐下降,而抗拉强度和0.2%屈服强度均逐渐增加.

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