碳纤维增强碳基复合材料增密方法及其特点  

Densification methods for C/C composites and their characteristics

作　　者：钟涛生[1,2] 易茂中[1] 葛毅成[1] 黄伯云[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083 [2]江西理工大学应用科学学院,江西赣州341000

出　　处：《金属热处理》2009年第2期111-114,共4页Heat Treatment of Metals

摘　　要：综合论述了化学气相渗透(CVI)、液相浸渍、CVI+液相浸渍和化学液气相渗透等4种增密碳纤维增强碳基(C/C)复合材料方法的原理和它们的特点。其中CVI增密方法的沉积效率低、生产周期长、成本高和生产适应性强;液相浸渍法增密速度快,但最终材料密度不高,存在大量细小的孔隙;CVI+液相浸渍综合了CVI和液相浸渍两种工艺的优点;化学液气相沉积的沉积速率高,但产品适应性差。The principles and characteristics of the four densification methods for C/C composites were introcuced,including chemical vapour infihration（CVI）, liquid impregnation, CVI ＋ liquid impregnation and chemical liquid vapour infiltration. CVI has characteristics as low infiltration efficiency, long production period, high cost and good adaptability to products. Densification velocity of liquid impregnation is rapid,but C/C composites made by this densification method haven＇t high density. CVI ＋ liquid impregnation synthetizes all advantages of CVI and liquid impregnation. Chemical liquid vapour infiltration has high densification efficiency, but has bad adaptability to products.

关 键 词：C/C复合材料 增密 化学气相渗透 液相浸渍 化学液气相渗透 

分 类 号：TB332[一般工业技术—材料科学与工程]