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Indexed by:会议论文

Date of Publication:2013-08-11

Included Journals:EI、CPCI-S、Scopus

Page Number:264-267

Key Words:lead-free solder; laser-soldering; IMC; interfacial reaction

Abstract:The effect of the fiber laser soldering parameters, laser-soldering output power and laser-soldering scanning speed, respectively, on the Sn-Ag-Cu/Cu interfacial reaction was investigated in this paper. When the output energy was very low, the Cu6Sn5 IMC was in scallop type with smooth surface; as the energy increased, the Cu6Sn5 grains showed the morphology of scallop type grains with faceted surface; further grew the energy, the scallop-type of Cu6Sn5 would be replaced by the prism-type Cu6Sn5; the Cu6Sn5 grains which were bottom closely arranged with a convex on the top can be found if the laser soldering energy was up again; when the laser soldering energy increased again, the plate-like Cu6Sn5 can be observed at the interface between the solder and Cu substrate.