摘要
Pb-Sn 钎料系统中Sn 含量低于一定值时,其润湿性和抗腐蚀性能将明显下降.为了开发适合我国资源情况的、用于汽车拖拉机散热器的低锡钎料.开展了合金元素对Pb-3Sn 和Pb-10Sn 钎料系统润湿性和抗腐蚀性能影响的研究。试验结果表明,Ag、Zn 和RE_s(混合稀土)较明显地提高其润湿性和抗腐蚀性能:Bi<3%时对润湿性不利,对抗腐蚀性能可减少失重量,但不钝化;Sb 明显降低润湿性能,对抗腐蚀性能与Bi 相似.
The automotive and tractor radiators were brazed mainly with solderscontaining less than 10% Sn and 0.5—1.5% Ag in the last 15 years abroad,primarily to save cost and to improve mechanical properties.Solders withless than 5% Sn,besides low wettability,showed some problems in corro-sion resistance after long service.Adding Zn,REs,Ag,Sb and Bi alloys toPb—3% Sn and Pb—10% Sn solder systems can obviously improve theircorrosion resistance to water coolant.Wet test for these high lead soldersdemonstrated that Zn,REs and Ag can significantly increase wettability oncopper within the range tested.But Sb and Bi can decrease the wettingproperties of solders.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
1990年第1期50-56,共7页
Transactions of The China Welding Institution
