| 다층코팅을 이용한 C/C 복합재료의 내산화성 및 내마모성 증진 |
| 김옥희, 이승윤, 윤병일1, 박종욱 |
한국과학기술원 재료공학과
1국방과학연구소 |
| Improvement of Oxidation Resistance and Erosion Resistance Properties of the C/C Composite with the Multilayer Coating |
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| ABSTRACT |
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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${mu}{textrm}{m}$ for pack-SiC, 5${mu}{textrm}{m}$ for CVD-SiC and 40${mu}{textrm}{m}$ for CVD-Si3N4. When the multilayer coated specimen was exposed to the plasma flame with temperature of 500$0^{circ}C$ for 20 seconds, it showed the weight loss five times less than that of the only pyro-carbon coated specimen. |
| Key words:
3-D C/C composite, Pack-cementatio, Thermal CVD, Plasma test |
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