High Performance SiC-AlN Composites

Abstract

Abstract: High performance SiC-AlN composites were prepared by hot-pressing with α-SiC as starting powder. The effects of composition and sintering temperature on the properties
of the materials were investigated, and SiC-5vol% AlN composites exhibited superior mechanical properties, with flexural strength, fracture toughness and Vickers
hardness of 1130MPa, 6.2MPa·m^1/2 and 28.6GPa respectively. Microstructural observations revealed that the grain size of SiC-AlN composites was obviously
inhibited and refined due to the formation of solid solutions and the development of subgrain boundaries in matrix SiC grain.

Key words: silicon carbide, aluminum nitride, solid solution, subgrain boundary

CHEN Zhongming,TAN Shouhong,JIANG Dongliang. High Performance SiC-AlN Composites[J]. Journal of Inorganic Materials.

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High Performance SiC-AlN Composites

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