Silicon carbide coating to protect carbon/carbon composites against oxidation

In order to protect carbon/carbon (C/C) composites from oxidation, a silicon carbide coating has been produced by a two-step pack cementation technique. XRD analysis showed that the inner coating obtained from the first step was a β-SiC layer and the outer coating formed by the second step pack ceme...

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Bibliographic Details
Published inScripta materialia Vol. 52; no. 9; pp. 923 - 927
Main Authors Fu, Qian-Gang, Li, He-Jun, Shi, Xiao-Hong, Li, Ke-Zhi, Sun, Guo-Dong
Format Journal Article
LanguageEnglish
Published New York, NY Elsevier Ltd 01.05.2005
Elsevier Science
Subjects
Applied sciences
Carbon/carbon composites
Coating
Corrosion
Corrosion environments
Exact sciences and technology
Metals. Metallurgy
Nonmetallic coatings
Oxidation
Production techniques
Surface treatment
Oxidation
Carbon/carbon composites
Coating
Silicon carbide
Corrosion
Composite coating
Non metal coating
Carbides
Composite material
Surface treatment
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Summary:In order to protect carbon/carbon (C/C) composites from oxidation, a silicon carbide coating has been produced by a two-step pack cementation technique. XRD analysis showed that the inner coating obtained from the first step was a β-SiC layer and the outer coating formed by the second step pack cementation was composed of α-SiC, Si and β-SiC. The as-received coating provided excellent oxidation resistance, proving able to protect C/C composites from oxidation for more than 310 h at 1773 K in air. The weight loss of the coated C/C composites was considered to arise from the debonding of some glass and the formation of bubble holes on the coating surface.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2004.12.029