采用Au基钎料真空钎焊Al_2O_3陶瓷  

Vacuum brazing of Al_2O_3 ceramic using Au-based brazing filler

作　　者：陈波[1] 熊华平[1] 毛唯[1] 邹文江[1] 

机构地区：[1]北京航空材料研究院焊接与塑性成形研究所,北京100095

出　　处：《焊接学报》2016年第11期47-50,共4页Transactions of The China Welding Institution

基　　金：国家自然科学基金资助项目(5990522;50475160;51275497;5140105004)

摘　　要：首先选用AgCuTi活性钎料在880℃/10 min参数下对Al_2O_3陶瓷表面进行金属化处理,之后尽量去除金属化层中的Ag Cu共晶组织,然后选用两种Au基高温钎料在980℃/10 min参数下对金属化后的Al_2O_3进行了钎焊连接.结果表明,在Al_2O_3/Au-Ni/Al_2O_3接头中靠近Al_2O_3母材的界面处生成一层薄薄的扩散反应层,该反应层主要由TiO_2和Al_2O_3组成;在Al_2O_3/Au-Cu/Al_2O_3接头中同样存在扩散反应层,与前者不同的是,接头中检测到Ti-Au相的存在.分别对Au-Ni和Au-Cu两种钎料获得的Al_2O_3接头进行了抗剪强度测试,前者对应接头强度为95.5MPa,后者对应接头强度达到102.3 MPa.First,surface metallization of Al_2O_3 ceramic was carried out at 880 ℃ heat treatment for 10 min using AgCuTi as active brazing filler,and then,vacuum brazing of the ceramic was performed at 980 ℃ for 10 min using two Au-based brazing fillers. The results showed that a thin diffusion layer containing TiO_2 and Al_2O_3 was formed at the Al_2O_3/Au-Ni/Al_2O_3 joint interface close to Al_2O_3 side. In Al_2O_3/Au-Cu/Al_2O_3 joint,besides Ti-O compound,Ti-Au compound existed in the diffusion layer. The test results at room temperature showed that the shear strength of two ceramic joints were 95. 5 MPa and 102. 3 MPa,respectively.

关 键 词：A12O3陶瓷 钎焊 金属化 Au基钎料 

分 类 号：TG454[金属学及工艺—焊接]