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http://dx.doi.org/10.3795/KSME-A.2007.31.2.205

Property Evaluation of Reaction Sintered SiC/SiC Composites Fabricated by Melt Infiltration Process  

Lee, Sang-Pill (동의대학교 기계공학과)
Shin, Yun-Seok (동의대학교 기계공학과 대학원)
Kohyama, Akira (교토대학교 에너지이공학연구소)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.31, no.2, 2007 , pp. 205-210 More about this Journal
Abstract
SiC/SiC composites and monolithic SiC materials have been fabricated by the melt infiltration process, through the creation of crystallized SiC phase by the chemical reaction of C and Si. The reinforcing material used in this system was a braided Hi-Nicalon SiC fiber with double interphases of BN and SiC. The microstructures and the mechanical properties of RS-SiC based materials were investigated through means of SEM, TEM, EDS and three point bending test. The matrix morphology of RS-SiS/SiC composites was greatly composed of the SiC phases that the chemical composition of Si and C is different. The TEM analysis showed that the crystallized SiC phases were finely distributed in the matrix region of RS-SiC/SiC composites. RS-SiC/SiC composites also represented a good flexural strength and a high density, accompanying a pseudo failure behavior.
Keywords
Flexural Strength; Microstructure; Melt Infiltration; Reaction Sintering; SiC/SiC Composites;
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