利用自行设计的超音速雾化制粉装置制备了无铅焊锡合金粉.研究了不同成分对雾化粉末特性的影响,同时观察了无铅焊锡雾化粉末钎焊接头的组织,并与传统含铅合金做了对比.结果表明:在相同过热度下,在3种不同成分的粉末中,Sn3Ag2.8Cu粉末具有最高的有效雾化率、最低的氧含量、最好的球形度和最光滑的表面;Sn3Ag2.8Cu焊锡膏与铜基板形成的扩散层比Sn3Ag2.8Cu-0.1Ce和Sn37Pb焊锡膏与铜基板的扩散层更厚,且形成的金属间化合物更不规则;Sn3Ag2.8Cu-0.1Ce粉末有效雾化率和氧含量均高于Sn37Pb.
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