Characterization of High Temperature Oxidation Properties of Silicon Carbide Nanofibers

Abstract:

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Carbon nanofibers were reacted with SiO vapor generated from a mixture of Si and SiO2 to produce silicon carbide nanofibers at 1350oC for 2 h under vacuum. The obtained SiC nanofibers with a diameter ranging 100~200 nm had the specific surface area as high as 124 m2/g. The SiC nanofibers were not oxidation resistant, showing nearly complete oxidation at 1000 oC after about 60 h in air, though the oxidation product was amorphous silica which was generally considered to be oxidation resistant. The poor oxidation resistance was attributed to the inherent nanoporous nature of the fibers resulted from the gas-solid reaction.

Info:

Periodical:

Materials Science Forum (Volumes 449-452)

Edited by:

S.-G. Kang and T. Kobayashi

Pages:

1197-1200

DOI:

10.4028/www.scientific.net/MSF.449-452.1197

Citation:

D. B. Lee et al., "Characterization of High Temperature Oxidation Properties of Silicon Carbide Nanofibers ", Materials Science Forum, Vols. 449-452, pp. 1197-1200, 2004

Online since:

March 2004

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Price:

$35.00

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