Ablative Properties of 4D Carbon/Carbon Composites by Combustion Test
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon Letters / 9권 / 4호
ㆍ저자명 : Jong-Min Park, Chong-Jin Ahn and Hyeok-Jong Joo
ㆍ저자명 : Jong-Min Park, Chong-Jin Ahn and Hyeok-Jong Joo
목차
1. 서 론2. 실 험
3. 결과 및 고찰
4. 결 론
참고문헌
한국어 초록
The factors that influence ablation resistance in fiber composites are properties of the reinforced fiber and matrix, plugging quantity of fiber, geometrical arrangement, crack, pore size, and their distributions. To examine ablation resistance according to distribution of crack and pore size that exist in carbon/carbon composites, this study produced various sizes of unit cells of preforms. They were densified using high pressure impregnation and carbonization process. Reinforced fiber is PAN based carbon fiber and composites were heat-treated up to 2800oC. The finally acquired density of carbon/carbon composites reached more than 1.932 g/cm3. The ablation test was performed by a solid propellant rocket engine. The erosion rate of samples is below 0.0286 mm/s. In conclusion, in terms of ablation properties, the higher degree of graphitization is, the more fibers that are arranged vertically to the directionof combustion flame are, and the less interface between reinforced fiber bundle and matrix is, the better ablation resistance is shown.
Keywords : Carbon/carbon composites, Ablation, Erosion rate, Carbon fiber, Combustion test
영어 초록
The factors that influence ablation resistance in fiber composites are properties of the reinforced fiber and matrix, plugging quantity of fiber, geometrical arrangement, crack, pore size, and their distributions. To examine ablation resistance according to distribution of crack and pore size that exist in carbon/carbon composites, this study produced various sizes of unit cells of preforms. They were densified using high pressure impregnation and carbonization process. Reinforced fiber is PAN based carbon fiber and composites were heat-treated up to 2800oC. The finally acquired density of carbon/carbon composites reached more than 1.932 g/cm3. The ablation test was performed by a solid propellant rocket engine. The erosion rate of samples is below 0.0286 mm/s. In conclusion, in terms of ablation properties, the higher degree of graphitization is, the more fibers that are arranged vertically to the directionof combustion flame are, and the less interface between reinforced fiber bundle and matrix is, the better ablation resistance is shown.Keywords : Carbon/carbon composites, Ablation, Erosion rate, Carbon fiber, Combustion test참고 자료
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