摘要
采用真空熔炼技术成功制备Sn-(8.98-x)Zn-0.02Al-xLa(x=0.02~0.12)焊料。采用XRD衍射、DTA、SEM等手段分析了焊料的熔点、显微结构及焊料对Cu基板的润湿性等性能。结果表明,添加适量的稀土元素La能较好地提高Sn-Zn-Al基焊料熔点,改善焊料的铺展能力和组织均匀性。在Sn-(8.98-x)Zn-0.02Al-xLa焊料中,稀土La的最佳添加量为0.04%。
The Sn-(8.98-x)Zn-0.02Al-xLa(x=0.02~0.12) solders were prepared by vacuum melting technique.Melting point,microstructure of the solder and its wettability on Cu substrate were analyzed through X-ray diffraction(XRD),DTA(differential thermal analysis),SEM(scanning electron microscope).The results show that proper rare earth La can effectively increase the melting point of Sn-Zn-Al solder,and improve the spreading ability as well as homogeneity of microstructure.With 0.04%La addition,Sn-(9-x)Zn-0.02Al-xLa solders exhibit the desirable comprehensive properties.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2012年第6期496-500,共5页
Special Casting & Nonferrous Alloys
基金
广西自然科学基金资助项目(0640040
2011GXNSFA018030)
广西高校优秀人才资助计划项目
广西教育厅科研项目(2011LX140)
广西民族大学科学基金资助项目(2010ZD012
2011QD019
2011MDQN046)
广西大学研究生创新项目(105931003069)
关键词
无铅焊料
熔点
显微结构
润湿性能
Pb-free Solder; Melting Point; Microstructure; Wettability