【摘要】 研究了在Sn 57Bi近共晶合金的基础上加入少量的Ag后对Sn 57Bi钎焊料铸态组织、抗拉强度和Sn 57Bi/Cu焊接性能的影响。试验结果表明,ωAg=0.1%～1.0%可使合金的共晶组织变细,β Sn枝晶相的尺寸变小,提高其抗拉强度;使Sn 57Bi/Cu接头的剪切强度有所提高。更多还原

【Abstract】 Based on Sn-57Bi near-eutectic alloy, the effect of Ag addition on the cast microstructure,tensile strength of Sn-57Bi solder and the weldability of Sn-57Bi/Cu were investigated.The experimental result showed that small amount addition of Ag can effectively fine the microstructure,improve the tensile strength of the solder as well as the shearing strength of Sn-57Bi/Cu joint due to the precipitate of intermetallic compound Ag₃Sn.更多还原