CAJ | 학술논문

简述了制备炭/炭复合材料的新工艺--化学液相沉积(CLD)的沉积原理.利用工业燃油作为裂解炭前驱体,炭纤维毡作为增强体,通过工艺参数控制得到低成本炭/炭复合材料.CLD工艺所得材料沉积密度1.6 g/cm3,轴向压缩强度92 MPa,等离子烧蚀率0.06 mm/s,与CVD工艺所得材料相近.与常规CVD工艺相比,CLD工艺制备的C/C复合材料在制备时间上缩短了4/5,致密速率快5倍多.所得基体裂解炭为粗糙层与光滑层结构(大部分为粗糙层结构).基体炭与炭纤维接合界面适中,且呈洋葱状分布,从而材料具有一定韧性.
간술료제비탄/탄복합재료적신공예--화학액상침적(CLD)적침적원리.이용공업연유작위렬해탄전구체,탄섬유전작위증강체,통과공예삼수공제득도저성본탄/탄복합재료.CLD공예소득재료침적밀도1.6 g/cm3,축향압축강도92 MPa,등리자소식솔0.06 mm/s,여CVD공예소득재료상근.여상규CVD공예상비,CLD공예제비적C/C복합재료재제비시간상축단료4/5,치밀속솔쾌5배다.소득기체렬해탄위조조층여광활층결구(대부분위조조층결구).기체탄여탄섬유접합계면괄중,차정양총상분포,종이재료구유일정인성.
The densification mechanism of chemical liquid deposition (CLD) process was introduced. Taking industrial fuel as the precursor for carbon matrix and carbon fiber felt as the reinforcement, a low-cost C/C composite (C/C) was prepared. The results show that the properties of CLD C/C are the same as those of CVD C/C, i.e. the bulk density is up to 1.6 g/cm3 , the axial compressive strength can be up to 92 MPa, and the plasma ablation rate can be less than 0.06 mm/s. Compared with CVD process, the densification rate of CLD process can be increased about 5 times. Consequently, the deposition period can be shortened about 4/5. CLD carbon matrix includes rough laminar pyrocarbon ( RL Pyc) and smooth laminar pyrocarbon ( SL Pyc) ( mainly RL Pyc). The carbon matrix with an onion structure bonds with carbon fiber moderately, that is to say, the matrix/fiber interface of CLD C/C is better. So it can be predicated that the mechanical properties of CLD C/C can be improved.