Preparation of Mullite Whiskers and Their Enhancement Effect on Ceramic Matrix Composites

查看全文 作　　者：[1,2]张锦化;WU [1]Hongdan;ZHANG [2]Suxin;Yu [2]Jishun;[1]侯书恩

机构地区：[1]Engineering Research Center of Nano-Materials of Mineral of Education, Faculty of Material Science and Chemical Engineering, China University of Geosciences;[2]State Key Laboratory of Geological Processes and Mineral Resources

出　　处：《Journal of Wuhan University of Technology(Materials Science)》索引2013年第28卷第3期,共5页

摘　　要：Mullite whiskers were facilely prepared by sintering kyanite at high temperature, with the addition of AlF3·3H2O. The as-prepared whiskers have been characterized systematically in terms of phase composition, morphology, and structure. Results showed that the morphology and size of mullite whiskers were strongly depended on the content of AlF3·3H2O and sintering temperature. At temperatures in the range of 1 100 to 1 500 ℃ with 4 wt% addition of AlF3·3H2O, the well-shaped mullite whiskers were obtained. For an instance, the mullite whiskers with 5-10 μm in length and 0.1-0.2 μm in cross-section could be formed at 1 400 ℃, with 4 wt% addition of AlF3·3H2O. Moreover, results showed that the addition of mullite whiskers into ceramic matrix enhanced its fracture toughness significantly. 关键词：莫来石晶须复合材料制备陶瓷基体增强效应烧结温度氟化铝高温烧结取值范围

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Preparation of Mullite Whiskers and Their Enhancement Effect on Ceramic Matrix Composites

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