研究了空气气氛下不同Cu含量的Ag-Cu 钎料与不锈钢支撑体的润湿和界面反应机理.采用座滴法研究了界面润湿变化规律,利用SEM观察了连接界面的形貌结构,并结合EDS对界面反应产物组成进行分析.结果表明,纯银与310S不锈钢不润湿；随着钎料中Cu含量的增加,钎料与不锈钢的润湿角显著减小,润湿性能明显改善；当Cu含量增加到2％(质量分数)之后,润湿角减小的趋势变缓.钎料中的CuO与不锈钢表面反应生成Cu-Cr-Fe-O复杂氧化物使基体表面的Cr氧化物膜破坏,改善了钎料与不锈钢的润湿性能.
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