다층코팅을 이용한 C/C복합재료의 내산화성 및 내마모성 증진

Abstract

CVD-Si3N4/CVD-SiC/pack-SiC/pyro-carbon/(3-D C/C composite) multilayer coating was performed to improve the oxdiation resistance and erosion resistance properteis of the 3-D carbon/carbon composite, and the plasma test was performed to measure the oxidation resistance and erosion resistance properties. The thicknesses of each film layer were about 10 for pack-SiC, 5 for CVD-SiC and 40 for CVD-Si3N4. When the multilayer coated specimen was exposed to the plasma flame with temperature of 500 for 20 seconds, it showed the weight loss five times less than that of the only pyro-carbon coated specimen.