Rakshit, Jaganmoy and Das, Prabal Kumar (2002) Effect of microstructure on the high temperature strength of nitride bonded silicon carbide composite. Bulletin of Materials Science, 25 (5). pp. 387-390. ISSN 0250-4707

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Abstract

Four compositions of nitride bonded SiC were fabricated with varying particle size of SiC of similar to 9.67, similar to 13-79, similar to 60 mu and their mixture with Si of similar to 4.83 mu particle size. The green density and hence the open porosity of the shapes were varied between 1.83 to 2.09 g/cc and 33.3 to 26.8 vol.%, respectively. The effect of these parameters on room temperature and high temperature strength of the composite up to 1300degreesC in ambient condition were studied. The high temperature flexural strength of the composite of all compositions increased at 1200 and 1300degreesC because of oxidation of Si3N4 phase and blunting crack front. Formation of Si3N4 whisker was also observed. The strength of the mixture composition was maximum.

Item Type:	Article
Uncontrolled Keywords:	Nitride bonded silicon carbide composite; Nitridation; microstructure
Subjects:	Engineering Materials
Divisions:	Non-Oxide Ceramics & Composites
Depositing User:	Bidhan Chaudhuri
Date Deposited:	22 Mar 2012 12:32
Last Modified:	22 Mar 2012 12:32
URI:	http://cgcri.csircentral.net/id/eprint/1335

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