作　　者： ; ;

机构地区： 山东大学材料科学与工程学院材料液态结构及其遗传性教育部重点实验室

出　　处： 《焊接学报》 2008年第12期25-28,共4页

摘　　要： 为了获得Al2O3-TiC陶瓷基复合材料与Q235钢的接头,采用Ti/Cu/Ti复合中间层对Al2O3-TiC复合材料与Q235低碳钢进行了真空扩散钎焊。通过扫描电镜、能谱分析和电子探针、抗剪试验等测试方法对Al2O3-TiC/Q235扩散钎焊界面的组织、成分及结合强度进行分析。结果表明,控制加热温度为1110℃,可获得界面抗剪强度122MPa的Al2O3-TiC/Q235扩散钎焊接头,Ti/Cu/Ti复合中间层与Al2O3-TiC和Q235润湿性较好,并发生一定程度的扩散反应,在Al2O3-TiC与Q235之间形成厚度约80μm的界面过渡区,过渡区内形成的组织结构主要是Ti3AlC2,Fe2Ti,Cu和TiC。 An Al2O3-TiC/Q235 joint, Al2O3-TiC ceramic composite with steel Q235, was obtained by diffusion brazing in vacuum, using a combination of Ti and Cu as multi-interlayer. The in-terfacial strength was measured by shear testing and the result was explained by the fracture morphology. Microstructure of the Al2O3-TiC/Q235 joint was investigated by scanning electron microscope (SEM), energy-dispersion spectroscopy (EDS) and X-ray diffraction (XRD). The results indicate that the Al2O3-TiC/Q235 joint with a shear strength of 122 MPa can be obtained by controlling heating temperature at 1 110 ℃ , multi-interlayer Ti/Cu/Ti is fused fully and diffused reaction to produce an obvious interfacial transition zone with a thickness of about 80 μm, and there are Ti3 AlC2,Fe2Ti, Cu and TiC in the transition zone.

关 键 词： 扩散钎焊 抗剪强度 组织特征

领　　域： [金属学及工艺]