Mechanical Properties of Si2N2O/SiC-Whisker Composites

Autor:	Masakazu Watanabe, Satoshi Lio, Yasushi Matsuo, Hitoshi Yokoi
Rok vydání:	1991
Předmět:	Materials science Silicon oxynitride Whiskers Sintering chemistry.chemical_compound Fracture toughness Flexural strength chemistry Whisker Materials Chemistry Ceramics and Composites Silicon carbide Composite material Chemical composition
Zdroj:	Journal of the American Ceramic Society. 74:296-300
ISSN:	1551-2916 0002-7820
DOI:	10.1111/j.1151-2916.1991.tb06878.x
Popis:	The mechanical and thermal properties of Si2N2O/SiC-whisker composites were studied with emphasis on the effect of matrix composition and of whisker content. The fracture toughness of Si2N2O was remarkably improved by 90% with a concomitant 70% strength improvement by addition of SiC whiskers of only 10 vol%. Optimum mechanical and thermal properties of Si2N2O/SiC-whisker composites were obtained at an equimolar ratio of Si3N4/SiO2, which is the stoichiometric composition for Si2N2O. Additional investigation concerning the Si2N2O-matrix/SiC-whisker interface by controlling sintering additives is necessary for further improvement of mechanical and thermal properties of Si2N2O/SiC-whisker composites.
Databáze:	OpenAIRE
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