Abstract
AbstractOne of the important way to improve the property of solder joints is to improve the property of solders, This paper is about a study of Sn-Pb-RE solder(RE-Rear Earth, mainly contains Ce and La). It has been shown that the final form of RE in SnPb60/40 solder is Sn-RE intermetallic compound, and a very little RE can change the solder microstructure greatly. The influence of RE on solder life of creep rupture is that Sn-Pn-RE solder has much long life than that of SnPb60/40, and the solder life increases with the increase of RE content.
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