| 학회 | 한국화학공학회 |
| 학술대회 | 2004년 봄 (04/23 ~ 04/24, 공주대학교) |
| 권호 | 10권 1호, p.924 |
| 발표분야 | 재료 |
| 제목 | Effects of time parameters in manufacturing C/SiC composites in a pulse-CVI batch reactor |
| 초록 | Manufacturing C/SiC composites from the reaction of methyltrichlorosilane (CH3SiCl3 MTS) and hydrogen using a pulsed chemical vapor infiltration (Pulse-CVI) in a batch reactor has been studied. Preform used in this study was three-dimensional carbon fiber preform. Experimental parameters were the reactant gas concentration, the gas admission time(ta), the evacuation time(tp) and the number of pulse. In the pulse CVI process, sequential steps of evacuating by-product gas from the pores, instantaneous introduction of reactant gases into the pores and holding the gas for reaction are repeated. By doing so, the reactant gases diffuse far into the preform. Accordingly, this process can have a short operation time with sufficient infiltration into the pores. As the short admission time (ta) prevents from plugging pores, it becomes possible to infiltrate into the preform and fill pores uniformly. The longer the evacuation time (tp) becomes, the more uniformly the deposition in the preform was obtained. The infiltrated amount was measured by comparing the masses before and after the infiltration and with the analysis of TGA. The shape of deposit was tested with a porosimeter and SEM. |
| 저자 | 김인구, 김용탁, 정귀영 |
| 소속 | 홍익대 |
| 키워드 | 복합재료; CVI; Pulse CVI |
| 원문파일 | 초록 보기 |
