利用热重分析仪测量了原位自生成技术制备的TiC/Ti-6Al复合材料高温连续氧化增重特性.结果表明,原位自生成TiC/Ti基复合材料在高温氧化时遵循抛物线规律,氧化增重在1073K时远大于873K和973K时,计算获得该复合材料的氧化激活能为255.7kJ/mol.研究发现,873K和973K时形成的氧化物是不连续的岛状分布,而在1073K时,氧化物已形成均匀连续的膜,这是由于复合材料的氧化首先发生在TiC颗粒的表面上,而不是像均质材料一样在整个表面上均匀地发生. The gravimetric properties of TiC / Ti-6Al composite prepared by in-situ self-forming technique at high temperature were measured by thermogravimetric analyzer. The results show that the in-situ self-formed TiC / Ti composites follow the parabolic law and oxidize When the weight gain is much larger than 873K and 973K at 1073K, the oxidation activation energy of the composite is calculated to be 255.7kJ / mol. It is found that the oxides formed at 873K and 973K are discontinuous island distributions, and at 1073K , The oxide has formed a uniform and continuous film because the oxidation of the composite first takes place on the surface of the TiC particles instead of uniformly over the entire surface like a homogeneous material.