Ceramic Coatings on Graphite via Polymer Vapor Pyrolysis Deposition Process

Abstract:

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Silicon carbide coatings on graphite were prepared through polymer vapor pyrolysis deposition process (PVPD) under N2 atmosphere. During this process, some low molecular weight substances that polycarbosilane (PCS) pyrolyzed can be deposited on graphite, and they can convert into SiC in high temperature. The results of XRD showed that amorphous SiC coatings were formed on graphite when the pyrolysis temperature was 1000°C, andβ-SiC phase formed in the coatings when the temperature up to 1250°C. Effects of the coatings on the microstructure and properties were investigated. It was shown that the uniform dense SiC coatings could be obtained by carefully controlling the pyrolysis temperature and ramping rate when the number molecular weight of PCS was in the range of 1,000~1,500.

Info:

Periodical:

Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong

Pages:

1297-1299

DOI:

10.4028/www.scientific.net/KEM.368-372.1297

Citation:

X. Xing et al., "Ceramic Coatings on Graphite via Polymer Vapor Pyrolysis Deposition Process", Key Engineering Materials, Vols. 368-372, pp. 1297-1299, 2008

Online since:

February 2008

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Price:

$35.00

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