Synthesis of tailored 2D SiCf/SiC ceramic matrix composites with BN/C interphase through ICVI

UdayaKumar, A and Raole, PM and Balasubramanian, M (2011) Synthesis of tailored 2D SiCf/SiC ceramic matrix composites with BN/C interphase through ICVI. Journal of Nuclear Materials, 417 (1). pp. 363-366. ISSN 0022-3115

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Abstract

Synthesis of 2D SiCf /SiC composites for applications in fusion reactors is a challenging task due to the stringent specification requirements on various mechanical and thermo-mechanical properties, chemical compatibility (with Pb–Li), oxidation resistance and irradiation resistance. Three types of SiCf/SiC composites with C interface and BN interface, with and without intermediate heat treatment are prepared through isothermal and isobaric chemical vapor infiltration process. Dense SiC seal coat applied to the composites has improved their oxidation resistance. The tensile, flexural and fracture toughness values of composite with BN interface were found to be improved by stabilizing the BN interface through thermal treatment. The electrical and thermal conductivity values obtained for composites with C interface are in the range of 10–29 S/m and 2.5–3.25 W/mK for the temperature range 500–900 �C as required for fusion reactor applications.

Item Type:	Journal Article
Additional Information:	Copyright for this article belongs to M/s. Elsevier BV
Uncontrolled Keywords:	Ceramic matrix composites;Composites fabrication;SiC matrix infiltration
Subjects:	CHEMISTRY AND MATERIALS > Chemistry and Materials (General) CHEMISTRY AND MATERIALS > Composite Materials
Division/Department:	Materials Science Division, Other, Other
Depositing User:	Ms. Alphones Mary
Date Deposited:	16 Feb 2012 16:45
Last Modified:	16 Feb 2012 16:45
URI:	http://nal-ir.nal.res.in/id/eprint/10343

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