于华,张亮亮,蔡芳芳,李云鹏,史银凯,钟素娟,纠永涛,马佳,魏世忠,龙伟民

• 1:河南科技大学材料科学与工程学院
• 2:金属材料磨损控制与成型技术国家地方联合工程研究中心
• 3:郑州机械研究所新型钎焊材料与技术国家重点实验室

摘要(Abstract)：

使用BAg30T药芯钎料对Cu/Q235A异种金属进行感应钎焊试验,研究了Cu/Q235A异种金属钎焊接头的力学性能和耐腐蚀性能。结果表明:Cu/Q235A钎焊接头的抗拉强度为214 MPa,与铜的抗拉强度接近,接头性能良好。在Cu/Q235A钎焊接头中,耐腐蚀性能从高至低依次为Cu> BAg30T钎缝> Q235A;钎焊接头经盐雾腐蚀96 h后抗拉强度下降了33%,腐蚀480 h后抗拉强度下降了74%,钎焊接头抗拉强度受盐雾腐蚀影响较大;腐蚀产物主要存在钢侧和钎缝处,未被腐蚀产物覆盖的表面存在点蚀,且随着腐蚀时间的增加腐蚀坑密度和尺寸变大,微观观察表明腐蚀产物呈现棉球状和絮状,腐蚀产物主要为Fe_2O_3和Fe_3O_4,且O_2与Cl~—参与腐蚀反应。

关键词(KeyWords)： Cu/Q235A异种金属;BAg30T药芯钎料;感应钎焊;耐腐蚀性能

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划-战略性国际科技创新合作重点专项(2016YFE0201300);; 新型钎焊材料与技术国家重点实验室2019年开放课题(SKLABFMT201902);; 2020年河南省高等学校重点科研项目(20A430013)

作者(Author): 于华,张亮亮,蔡芳芳,李云鹏,史银凯,钟素娟,纠永涛,马佳,魏世忠,龙伟民

DOI: 10.13289/j.issn.1009-6264.2021-0057

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