CAJ | 학술논문

采用5种不同成分的锌铝药芯钎焊丝钎焊铝/铜接头，研究钎料成分对接头剪切强度和耐蚀性的影响。研究结果表明：对于同成分的锌铝药芯钎焊丝，采用火焰钎焊的铝/铜接头抗剪强度比炉中钎焊高，Zn80Al20药芯钎焊丝钎焊的铝/铜接头强度最高；随钎料中Al含量降低，铝/铜接头的耐蚀性变差，Zn72Al28药芯钎焊丝钎焊的铝/铜接头耐腐蚀性最好。相同条件下，火焰钎焊铝/铜接头的耐蚀性明显好于炉中钎焊的接头；Zn80Al20药芯钎焊丝钎焊的铝/铜接头钎缝组织呈块状。锌铝药芯钎焊丝中适中的Zn，Al含量有利于使铝/铜接头铜侧界面得到固溶体组织，并避免铝侧母材的过度熔蚀。
채용5충불동성분적자려약심천한사천한려/동접두，연구천료성분대접두전절강도화내식성적영향。연구결과표명：대우동성분적자려약심천한사，채용화염천한적려/동접두항전강도비로중천한고，Zn80Al20약심천한사천한적려/동접두강도최고；수천료중Al함량강저，려/동접두적내식성변차，Zn72Al28약심천한사천한적려/동접두내부식성최호。상동조건하，화염천한려/동접두적내식성명현호우로중천한적접두；Zn80Al20약심천한사천한적려/동접두천봉조직정괴상。자려약심천한사중괄중적Zn，Al함량유리우사려/동접두동측계면득도고용체조직，병피면려측모재적과도용식。
Five kinds of Zn/Al flux cored wires with different compositions were used to braze Al /Cu joints, and the joints′shear strengths and corrosion resistances which were affected by compositions were studied .It is shown that for the Zn/Al flux cored wires with the same compositions ,the shear strength of the joint brazed by flame bra-zing is higher than furnace brazing , and the shear strength of the joint brazed by Zn 80Al20 flux cored wire is the highest.The corrosion resistance of Al/Cu joint gets worse with the decrease of Al in the solder and that of Al /Cu joint brazed by Zn72Al28 flux cored wire is the best .Under the same conditions ,the corrosion resistance of Al/Cu joint brazed by flame brazing is obviously better than furnace brazing and the microstructure of Al /Cu joint brazed by Zn80Al20 flux cored wires is massive .Moderate contents of Zn and Al in the Zn/Al flux cored wire are beneficial to gain solid solution structure in the Cu side of Al /Cu joint and avoid the excessive corrosion of base metal in the side of Al .