摘要
对先驱体硅树脂高温(1200℃)转化陶瓷接头连接C_f/SiC复合材料进行了研究。探讨了添加活性填料(纳米级Si,Al粉)后先驱体裂解所发生的反应趋势及重复浸渍-裂解过程对连接强度的影响。结果表明,通过添加活性填料纳米级Si,Al粉可以改善连接效果,但性能难以达到应用目标。通过重复浸渍2 g/mLSR249/ethanol溶液-裂解可以提高连接剪切强度。经过8个浸渍-裂解周期后,得到连接剪切强度达到64.24 MPa。
The joining of Cf/SiC composites via preceramic silicone resin （SR） at high temperature （1200℃） was studied. The reaction tendency of the active fillers （ nano-Si/Al powder） in the pyrolysis procedure and the reinfiltration-pyrolysis process were especially discussed. The results showed that the active filler nano-Si/Al powder was good for the joining. The shear strength of the joint achieved 64.24 MPa after 8 infiltration-pyrolysis cycles.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2007年第A03期641-644,共4页
Rare Metal Materials and Engineering
关键词
先驱体
硅树脂
连接
活性填料
重复浸渍
preceramic
silicone resin
joining
active filler
reinfiltration-pyrolysis
