In:
Surface Review and Letters, World Scientific Pub Co Pte Ltd, Vol. 14, No. 04 ( 2007-08), p. 795-799
Abstract:
To improve the oxidation protective ability of SiC coating for carbon/carbon ( C / C ) composites, MoSi 2 was introduced in the SiC coating by infiltration technique. XRD and SEM analysis show that the SiC coating obtained by pack cementation is a porous structure with a thickness of about 60–100 μm. After infiltration treatment, MoSi 2 was filled in the holes of the porous SiC -coating, and the as-received coating becomes dense without through-thickness crack. Oxidation test shows that, the weight loss of the SiC -coated C / C is up to 9.23% after 53 h oxidation in air at 1773 K, while the weight loss of the MoSi 2 -improved SiC -coated C / C composites is only 0.73% after oxidation for 265 h. The oxidation of C / C composites is primarily due to the formation of the penetration cracks and the holes on the glass layer.
Type of Medium:
Online Resource
ISSN:
0218-625X
,
1793-6667
DOI:
10.1142/S0218625X07010093
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
2007
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