摘要
The joining of graphite, ceramic SiC and C_f/SiC composites via preceramic silicone resin(SR) at high temperature (8001400℃) was studied. The curing and pyrolysis process of SR, pyrolysis temperature, inert and active fillers were especially discussed. The results show that the curing process of SR was accomplished by consuming Si—OH. The temperature of 1200℃ is the appropriate treating temperature for graphite and SiC ceramic, and the temperature of 1400℃ is suitable for C_f/SiC composites. Inert filler SiC powder(5%, mass fraction) has much positive influence on the shear strength of the joints. Active filler nano Ai, Si powder can greatly improve the properties of the joints treated at high temperature. The improvement is over 700%.
The joining of graphite, ceramic SiC and Cf/SiC composites via preceramic silicone resin（SR） at high temperature （800 - 1 400℃ ） was studied. The curing and pyrolysis process of SR, pyrolysis temperature, inert and active fillers were especially discussed. The results show that the curing process of SR was accomplished by consu- ming Si--OH. The temperature of 1 200 ℃ is the appropriate treating temperature for graphite and SiC ceramic, and the temperature of 1 400 ℃ is suitable for Cf/SiC composites. Inert filler SiC powder（5%, mass fraction） has much positive influence on the shear strength of the joints. Active filler nano Ai, Si powder can greatly improve the properties of the joints treated at high temperature. The improvement is over 700 %.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2005年第6期1322-1327,共6页
Transactions of Nonferrous Metals Society of China
基金
Project(04JJY3002)supportedbytheNaturalScienceFoundationofHunanProvince,China
关键词
有机硅树脂
热解温度
填充物
陶瓷基复合材料
preceramic
silicone resin
pyrolysis temperature
inert filler
active filler
joining
