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http://dx.doi.org/10.4191/KCERS.2002.39.10.948

Mechanical Properties of Porous Reaction Bonded Silicon Carbide  

Hwang, Sung-Sic (Department Automotive Engineering, Kookmin University)
Park, Sang-Whan (Multi-Functional Ceramics Research Center, KIST Seoul)
Han, Jae-Ho (Multi-Functional Ceramics Research Center, KIST Seoul)
Han, Kyung-Sop (Multi-Functional Ceramics Research Center, KIST Seoul)
Kim, Chan-Mook (Department Automotive Engineering, Kookmin University)
Publication Information
Journal of the Korean Ceramic Society / v.39, no.10, 2002 , pp. 948-954 More about this Journal
Abstract
Porous reaction bonded SiC with high fracture strength was developed using Si melt infiltration method for use of the support layer in high temperature gas filter that is essential to develop the next generation power system such as integrated gasification combined cycle system. The porosity and pore size of porous RBSC developed in this study were in the range of 32∼36% and 37∼90 ${\mu}m$ respectively and the maximum fracture strength of porous RBSC fabricated was 120 MPa. The fracture strength and thermal shock resistance of porous RBSC fabricated by Si melt infiltration were much improved compared to those of commercially available porous clay bonded SiC due to the formation of the strong SiC/Si interface between SiC particles. The characteristics of pore structure of porous RBSC was varied depending on the amounts of residual Si as Well as the size of SiC particle used in green body.
Keywords
RBSC; Infiltration; Si; SiC;
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