Pre-coated carbon layers on the surface of carbon/carbon composites were prepared firstly by slurry and high-temperature treatment for preparing the anti-oxidation coating with SiC concentration gradient. The micrographs and microstructures of the pre-coated carbon layer were characterized by SEM, Raman and XRD. The effects of different graphite content and carbonization temperature on the microstructure of pre-coated carbon layer were investigated. The bonding strength between the carbon layer and the C/C composites was also measured. The results show that the as-prepared carbon layer is dense and the bend strength reaches 10.5MPa. The structures of the pre-coated carbon layer are influenced by the graphite content and carbonization temperature, and the pre-coated carbon layers with different structures are obtained.
ZHANG Yu-Lei
,
LI He-Jun
,
FU Qian-Gang
,
LI Ke-Zhi
,
OUYANG Hai-Bo
. Preparation and Performance of Pre-coated Carbon Layer for Carbon/Carbon Composites[J]. Journal of Inorganic Materials, 2009
, 24(1)
: 125
-128
.
DOI: 10.3724/SP.J.1077.2009.00125
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