摘要
选用聚碳硅烷(PCS)为前驱体,对密度分别为1.34g/cm^3,1.52g/cm^3和1.62g/cm^3的针刺炭布C/C材料进行液相致密化处理,制得密度达1.75g/cm^3的C/C—SiC复合材料,并与密度为1.85g/cm^3的同结构高密度C/C材料的弯曲强度和抗氧化性能进行了对比分析。结果表明:密度为1.34g/cm^3的C/C材料经过PCS致密化处理,在保持高密度C/C材料的弯曲强度同时,显著提高了材料的抗氧化性能。
The needled carbon cloth C/C composites with different initial dendsities （1.34g/cm^3,1.52g/cm^3 and 1.62g/cm^3） were densified by PCS precursor to prepare C/C-SiC composits with a density of 1.75g/ cm^3. Their flexural strength and oxidation resistance were compared with the same structure C/C composites with higher denisty（1.85g/cm^3）. The results show that PCS densification of C/C composites with an initial density of 1.34g/cm^3 can improve evidently oxidation resistance of C/C composites and keep its flexural strength.
出处
《炭素》
2007年第3期21-25,共5页
Carbon
