研究了Cu-Ag-Si-Ga系钎料合金的熔化特性、加工性能和在Cu、Ni和不锈钢母材上的铺展性、钎焊接头强度以及Ga对钎料合金微观组织的影响.推荐一种典型的钎料,其成分为40Ag-2Si-2Ga-余量Cu(质量分数%),熔化温度为786.1~823.0℃,在500℃的条件下的蒸气压低于5.51×10~(-8)Pa,该钎料适合用于850~870℃电真空器件分级钎焊.
This article studied the melting characteristic,working property of Cu-Ag-Si-Ga series brazing filler alloys and spreading characteristic of them on Cu,Ni and stainless steel plates as well as the brazing strength and effect of Ga on microstructure of experimental alloys. A typical brazing filler alloy is recommended,the chemical composition of it is 40%Ag-2%Si-2%Ga -remnant Cu,melting temperature is 786.1~823.0℃,vapor pressure is lower 5.51×10~(-8) Pa. This brazing filler alloy is suitable for grade brazing of electro-vacuum devices at 850~870℃.
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