摘要
研究了 Ａｌ Ｎ／ Ｔｉ Ｃ／ Ｔ Ｚ Ｐ复合材料的高温氧化及其对组织与性能的影响．高温氧化实验表明，在１４００ ℃范围内，随氧化温度和时间增加，氧化增重符合抛物线规律，同时复合材料的强度和韧性急剧下降．用 Ｘ Ｒ Ｄ、 Ｓ Ｅ Ｍ 和 Ｔ Ｅ Ｍ 观察分析了氧化前后试样的显微组织结构．探讨了复合材料的高温氧化机理．
The oxidation at high temperature of AlN/TiC/TZP composite and its effect on microstructure and property are studied. Oxidation at high temperature shows that the weight increases with the oxidation time and temperature within 1400 ℃, Oxidation follows the typical parabolic law, and the flexure strength of and fracture toughness K IC greatly decrease. The microstructures before and after oxidation are observed with XRD, SEM and TEM. The oxidation mechanism of AlN/TiC/TZP compostie at high temperature is researched.
基金
山东省教委资助
关键词
陶瓷复合材料
显微组织
复合材料力学
Ceramic composites
Microstructure
Mechanics of composites
