作　　者： ; ; ;

机构地区： 山东大学材料科学与工程学院

出　　处： 《焊接技术》 2007年第5期19-21,共3页

摘　　要： 采用金相显微镜、扫描电镜和电子探针,观察了Al2O3-TiC复合陶瓷与Cr18-Ni8不锈钢扩散钎焊接头的组织形貌,分析了元素在接头中的分布情况和界面附近区域元素的扩散情况。试验结果表明,Ti-Cu-Ti中间层与陶瓷具有良好的反应能力,促进元素的相互扩散。Al2O3-TiC复合陶瓷与不锈钢扩散钎焊接头形成3个扩散反应层,其中一个位于Cr18-Ni8不锈钢侧,厚度约为17.5μm,成分主要是Fe在β-Ti中的固溶体,Fe-Ti化合物和TiC;靠近陶瓷侧的反应层厚度约为7.5μm,成分主要是TiC,Ti-O和Ti-Al;中间反应层厚度约为5μm,成分主要是Cu固溶体和Cu-Ti相。 The microstructure of diffusion brazing joints of Al2O3-TiC composite ceramic to stainless steel were investigated by means of metallurgical microscope, SEM and EPMA. The distribution in the joints and diffusion condition near the interface of elements were also analyzed. Experimental results demonstrate that Ti-Cu-Ti interlayer has good reaction ability with ceramics as well as accelerate element interdiffusion. The reaction layers of the joints of Al2O3-TiC composite ceramic to stainless steel was divided into three layers. One of the layer which is close with the 18-8 stainless steel is about 17.5 μm thick. The main components are β-Ti(Fe) solid solution, Fe-Ti compound and TiC. The layer near the ceramic is about 7.5 μm thick and the main components are TiC, Ti-O and Ti-Al. The middle layer is about 5 μm thick and the main components are Cu solid solution and Cu-Ti phase.

关 键 词： 复合陶瓷 不锈钢 扩散钎焊

领　　域： [金属学及工艺] [金属学及工艺]