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Influence of Carbon Content on Surface Quality of Solid‐State Sintered SiC Ceramics
Author(s) -
Gao Jianqin,
Chen Jian,
Liu Guiling,
Yan Yongjie,
Huang Zhengren
Publication year - 2012
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2011.02671.x
Subject(s) - materials science , polishing , ceramic , carbon fibers , surface roughness , surface finish , composite material , composite number
Influence of carbon content on surface quality of solid‐state sintered SiC ceramics with nearly full density was first investigated. Comparison study was carried out with varying carbon contents of 2, 3, and 6 wt%, respectively. Investigation on surface morphology using atomic force microscope reveals that residual carbon presents as protuberances on the polished surface. The surface quality of the polished samples was improved by decreasing carbon content, and with 2 wt% carbon, the surface quality can reach 0.7 nm rms surface roughness after polishing. It offers a material‐design approach to improve surface quality of solid‐state sintered SiC ceramics.