摘要
通过对不同条件下原位复合制备的各种TIN／O′Sialon材料在空气中的氧化行为研究，考查了氧化温度、气孔率和TiW含量对材料抗氧化性能的影响。结果表明：当氧化温度升高到一定值时，通常材料表层会形成致密的“保护膜”，阻碍材料的进一步氧化；材料的气孔率和TIN含量越低，越易形成“保护膜”，反之，越不易形成“保护膜”。当材料的气孔率为30％以上，TiO2添加量为30wt％以上时，即使在更高的氧化温度下也不能形成“保护膜”。
Through investigating the oxidation behavior of diversified in-situ composited TiN/O'-Sialon prepared in different conditions, the influences of oxidation temperature, porosity and TiN content on the oxidation resistance of the materials were studied. The result indicates that there generally forms a compact 'protective film', which blocks the more oxidation, on the material surface when oxidation temperature increasing to some value; the lower the porosity and TiN content are, the more easily the 'protective fim 'forms. Contrarily, it is more difficult to form 'protective fim' when the porosity overruns 30% and the TiN content overruns 30wt%, there can not form' protectivefilm' even at higher oxidation temperature.
出处
《硅酸盐通报》
CAS
CSCD
2000年第2期29-31,共3页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金!59874012
