新型Au-19.25Ag-12.80Ge钎料的制备及性能

Preparation and Property of Novel-Type Au-19.25Ag-12.80Ge Solder Alloy

摘要:

Au-Ag-Ge三元相图,制备了新型Au-19.25Ag-12.80Ge(质量分数,%)钎料合金.利用DTA、扫描电镜对钎料的熔化特性及显微组织进行分析,并对其与纯Ni的润湿性加以研究.结果表明:钎料合金熔化温度为446.76～494.40℃.结晶温度区间为47.64℃.焊接温度在510～550℃范围内时,钎料合金与Ni的润湿性较好,同时有润湿环出现;钎料合金与Ni基体之间形成了一条明显的扩散层,能谱分析表明,该扩散层为Ge-Ni金属间化合物.采用先包覆铝热轧再冷轧,结合中间退火的加工工艺可制备厚度0.1mm的钎料薄带.

关键词:Au-Ag-Ge;钎料;润湿性;润湿环;界面;Au-Ag-Ge;solder;wettability;wetting ring;interface;钎料;性能;Property;Preparation;Alloy;technique;aluminum alloy;intermediate;annealing;Thin;strip;thickness;energy spectrum;analyzing;intermetallics;interface structure;observation;diffusion;layer;base

Abstract:

Key words:Au-Ag-Ge;solder;wettability;wetting ring;interface