摘要
With liquid petrol gas(LPG)as carbon source,carbon felt as porous perform and hydrogen as diluent,C/C composites were fast fabricated by using a multi-physics field chemical vapor infiltration(MFCVI)process in a self-made furnace.A set of orthogonal experiments were carried out to optimize parameters in terms of indices of density and graphitization degree.The results show the optimal indices can be achieved under the conditions of temperature 650℃,LPGconcentration 80%,gas flux 60 mL/s, total pressure 20 kPa,infiltration time 15 h.The verification experiment proves the effectiveness of the orthogonal experiments. Under the optimal conditions,the graphitization degree of 75%and bulk density of 1.69 g/cm are achieved with a uniform density distribution.At the same time,a new structure is obtained.
With liquid petrol gas (LPG) as carbon source, carbon felt as porous perform and hydrogen as diluent, C/C composites were fast fabricated by using a multi-physics field chemical vapor infiltration (MFCVI) process in a self-made furnace. A set of orthogonal experiments were carried out to optimize parameters in terms of indices of density and graphitization degree. The results show the optimal indices can be achieved under the conditions of temperature 650 ~C, LPG concentration 80%, gas flux 60 mL/s, total pressure 20 kPa, infiltration time 15 h. The verification experiment proves the effectiveness of the orthogonal experiments. Under the optimal conditions, the graphitization degree of 75% and bulk density of 1.69 g/cm are achieved with a uniform density distribution. At the same time, a new structure is obtained.
出处
《中国有色金属学会会刊:英文版》
EI
CSCD
2009年第6期1436-1439,共4页
Transactions of Nonferrous Metals Society of China
基金
Projects(50802115
50721003)supported by the National Natural Science Foundation of China
Project(2006CB600901)supported by the National Basic Research Program of China