Abstract
Four compositions of nitride bonded SiC were fabricated with varying particle size of SiC of ∼ 9.67, ∼ 13.79, ∼ 60 μ and their mixture with Si of ∼ 4.83 μ 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 1300°C in ambient condition were studied. The high temperature flexural strength of the composite of all compositions increased at 1200 and 1300°C 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.
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Buljan S T, Baldoni J G and Hukabee M L 1987Am. Ceram. Soc. Bull. 66 347
Chiang Y, Haggerty T S, Messner R P and Demerty C 1989Am. Ceram. Soc. Bull. 68 420
Davidge R W, Evans A G, Gilling D and Wilyman P R 1972Spl ceram. (ed.) P Popper (Stroke-on-Trent: Br. Ceram. Res. Assoc.)5 p. 3239
Klemm H, Herrmann M and Schubert C 1997Ceram. Engg. Sci. Proc. 18 615
Mukerji J 1984Trans. Indian Refrac. Makers Assoc. 17 3
Mukerji J and Rakshit J 1988Ceram. Int. 14 1461
Mukerji J and Reddy N K 1980J. Indian Refrac. Makers Assoc. 13 10
Pick A N 1979Trans. J. Br. Ceram. Soc. 78 13
Pizzotti Get al1989J. Am. Ceram. Soc. 72 1461
Rakshit J and Das P K 1996Tech papers of 60th annual session of Indian Ceram. Soc., Ranchi v. 22
Reddy N K and Mukerji J 1991J. Am. Ceram. Soc. 74 1139
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Rakshit, J., Das, P.K. Effect of microstructure on the high temperature strength of nitride bonded silicon carbide composite. Bull Mater Sci 25, 387–390 (2002). https://doi.org/10.1007/BF02708015
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DOI: https://doi.org/10.1007/BF02708015