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A Si–SiC Oxidation‐resistant Coating for Carbon/Carbon Composites by Hot‐pressing Reaction Technique
Author(s) -
Fu Qiangang,
Cao Cuiwei,
Li Hejun,
Tao Jun,
Li Kezhi
Publication year - 2013
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/ijac.12014
Subject(s) - materials science , coating , sintering , flexural strength , hot pressing , composite material , carbon fibers , reinforced carbon–carbon , pressing , composite number
A S i– S i C coating was prepared by hot‐pressing reactive sintering ( HPRS ) technique for protecting carbon/carbon ( C / C ) composites against oxidation. The S i– S i C coating has a dense and crack‐free structure with a thickness of 70–90 μm. The S i– S i C coating by HPRS has a higher S i C content and lower Si content than the coating by pressure‐less reactive sintering ( PRS ). It also exhibits better oxidation‐protective ability than that prepared by PRS . With hot‐pressing, the flexural strength of the S i– S i C coated C / C composites decreases from 121 MP a to 99 MP a, and the interface bonding strength increases from 6 MP a to 10 MP a.