Article ID Journal Published Year Pages File Type
10634946 Scripta Materialia 2005 5 Pages PDF
Abstract
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.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
Authors
, , , , ,