论文部分内容阅读
本试验设计了一种“三明治”型的C/C刹车材料的预制体结构,并研究了这种“三明治”预制体结构对C/C刹车材料CVI工艺的影响。结果表明,相对一般针刺毡结构,采用“三明治”预制体结构制备C/C复合材料时,增密速率快,可有效消除CVI瓶颈效应,密度分布更加均匀;且可一次性致密,无需中间热处理等加工步骤,有效缩短了生产周期,降低了生产成本。
This experiment designed a “sandwich” C / C brake material preform structure, and studied the “sandwich ” preform structure on the C / C brake material CVI process. The results show that the C / C composites prepared by the “sandwich” prefabricated structure have higher densification rate, which can effectively eliminate the CVI bottleneck effect and make the density distribution more uniform compared with the general needle-felt structure. Without intermediate heat treatment and other processing steps, effectively shortening the production cycle, reducing production costs.