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Fabrication and Microstructure of BN Matrix Composites with Electrical Conductivity 被引量:3
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作者 王为民 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2002年第3期5-7,共3页
BN ceramic is an advanced engineering ceramics with excellent thermal shock resistance, good workability and excellent dielectricity.TiB 2 ceramic has excellent electric conductivity,high melting points, and corrosio... BN ceramic is an advanced engineering ceramics with excellent thermal shock resistance, good workability and excellent dielectricity.TiB 2 ceramic has excellent electric conductivity,high melting points, and corrosion resistance to molten metal.Therefore,the composite consisting of BN and TiB 2 ceramics is expected to have a combination of above mentioned properties,thereby can be used as self heating crucible.In this paper,hot pressing technology was used to fabricate the high performance BN TiB 2 composite materials.microstructure and electric conducting mechanism were studied,and the relationship between the microstructure and physical property was discussed.The results show that the microstructure of composites has a great influence on the physical property of composites.The BN TiB 2 composites with excellent mechanical strength and stable resistivity can be obtained by optimizing the processing parameter and controlling the microstructure of composites. 展开更多
关键词 bn tib 2 composites hot pressing sintering MICROSTRUCTURE physical property electric conduct mechanism
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