SiC/Si - MoSi2 /MoSi2 Oxidation Protective Coating for Carbon Material at 1700°C

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A multi-layer coating SiC/ Si - MoSi2 /MoSi2 with good oxidation resistance has been developed by using the slurry-sintering method on the surface of graphite to improve the oxidation resistance performance at 1700 °C for more than 200 h. Microstructure and anti-oxidation property of the as-received coating were investigated. It was found that functionally gradient SiC/ Si - MoSi2 /MoSi2 coating was formed on the surface of the graphite substrate. The coating characterized by excellent thermal shock resistance can effectively protect the graphite from oxidation at 1700 °C for 200 h. The mechanism of the oxidation resistance of the coated graphite is also dicussed, and a dense SiO2 layer was formed on the surface of coating at 1700°C during the isotheral oxidation, which can protect graphite from oxidation at longer time.

Info:

Periodical:

Advanced Materials Research (Volumes 160-162)

Edited by:

Guojun Zhang and Jessica Xu

Pages:

1-6

DOI:

10.4028/www.scientific.net/AMR.160-162.1

Citation:

J. A. Zhao "SiC/Si - MoSi2 /MoSi2 Oxidation Protective Coating for Carbon Material at 1700°C", Advanced Materials Research, Vols. 160-162, pp. 1-6, 2011

Online since:

November 2010

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$35.00

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