中文摘要：

为研究Ti（C，N）基金属陶瓷在高温条件下的可应用性，采用XRD、SEM、EDS等方法分析了该陶瓷在900～1150℃的氧化行为及其机理。结果表明：在900～1150℃范围内，陶瓷氧化程度随氧化温度的升高而显著增加，其质量增加曲线近似呈抛物线形；在900℃空气中氧化100h后，陶瓷表面生成致密氧化膜（NiO＋TiO2），厚度小于10μm，对基体具有保护作用；而在1150℃条件下，在致密层氧化膜（NiO＋TiO2）表面衍生出岛状疏松层（TiO2），100h后厚度达80μm，氧化膜逐渐失去保护作用。

英文摘要：

In order to research the applicability of Ti（C,N）-based cernlets at high temperatures. Oxidation behavior and mechanism at 900--1 150 ℃ of the lermet material were investigated by means of XRD, SEM, EDS. The results show that from 900 to 1 150℃, the oxidation degree obviously increased with the elevation of temperature, and the curves of gained mass were liner to parabola. After oxidation at 900 ＊C for 100 h in the air, thickness of the compact oxide layer generated on the surface of the material was less than 10 μm with composition of NiO＋TiO2, which could protect the matrix. While on the condition of 1 150 ℃, loose layer with the main composition TiO2 derived from the inner compact one with thickness more than 80 μm, which lost the protection to matrix gradually.