【摘要】 研究了热压ＡＩＮ－ＳｉＣｗ复合材料在１２００℃～１４００℃的氧化行为，分析了晶须掺量对复合材料氧化产物、氧化过程及强度的影响。结果表明，复合材料的氧化符合抛物线规律，氧化产物为Ａｌ２Ｏ３、莫来石及铝硅酸盐玻璃相。晶须掺量的变化对复合材料的氧化并无显著影响。更多还原

【Abstract】 AIN-SiCw composites are prepared by hot-pressing mixtures of AIN and SiC whiskers. The isothermal oxidation behavior of the composites is investigated. Samples are exposed to air from 1200℃ to 1400℃. Influences of the content of SiC whiskers on oxidation products, oxidation kinetics and room-temperature flexural strength are discussed. The results show that the reaction products contain alumina, mullite, an aluminosilicate glass and gas bubbles. The oxidation kinetics are parabolic at 1200℃ to 1400℃. The content of SiCw is no significant effect on oxidation of the composites.更多还原