Ag-Cu钎焊透氧膜不锈钢支撑体侧的界面润湿及反应机理  

Wetting and interfacial reaction of the metal supports for oxygen-permeable membranes by Ag-Cu brazing filler

作　　者：张玉文[1] 苏昆[1] 张齐飞[1] 丁伟中[1] 鲁雄刚[1] 

机构地区：[1]上海大学上海市现代冶金及材料制备重点实验室,上海200072

出　　处：《功能材料》2013年第15期2188-2192,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51174133);国家杰出青年科学基金资助项目(51225401);上海市自然科学基金资助项目(11ZR1412900)

摘　　要：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。The effect of Cu content on the wettability and interfacial reaction of metal supports for oxygen-permeable membranes brazed with Ag-Cu filler was investigated.The microstructure of the interface was observed by SEM and the constituent phases were analyzed by EDS.The results showed that pure Ag exhibited poor wettability on the 310S stainless steel supports;the contact angles decreased rapidly when the Cu content increased from 0 to 2% and then the contact angles decreased slowly with the increasing Cu content.The wettability of Ag-Cu/310S system in air was improved by reaction between CuO in brazes and the surface layer of 310S to form a new Cu-Cr-Fe-O oxide and to destroy the passive film from the 310S surface.

关 键 词：Ag-Cu钎料 不锈钢支撑体 润湿 界面反应 

分 类 号：TB34[一般工业技术—材料科学与工程]