炭/炭复合材料熔融渗Si研究

来源期刊：中南大学学报(自然科学版)2002年第1期

论文作者：马运柱 熊翔 黄伯云 肖鹏

文章页码：49 - 52

关键词：炭/炭复合材料;渗Si;摩擦磨损;改性

Key words：C/C composites; infiltrating Si; friction wear; modifying properties

摘    要：为了改善航空刹车副用炭/炭复合材料的摩擦磨损性能,对A,B 2种试样进行了渗Si处理.在试样A的摩擦磨损试验中,其线性磨损由原来的42μm/次降低到17.56μm/次,摩擦因数较稳定,均为0.36,并且摩擦磨损曲线的线型较好;试样B渗Si后也比渗Si前的摩擦磨损曲线线型好,同时解决了摩擦时的振动问题,但随试样中所生成SiC含量的增加,其摩擦因数由0.40→0.34→0.30降低,静盘线性磨损量由2·0→21·21→69·33μm增加,对应的动盘线性磨损量也由1·4→23·12→52·85μm增加.并从摩擦磨损的机理上进行了分析.实验结果表明,摩擦磨损性能一方面受A,B 2种试样的结构性能影响;另一方面是由渗Si后所生成SiC的性能和不同结构决定的.

Abstract: In order to improve the friction-wear properties of the C/C composites for aircraft brake pairs, the friction be haviors of samples A and B were studied by infiltrating Si. For sample A, the linear wear reduced from 42.00 to 17.56μm in each processing; the curve improved and the friction coefficient was stable at o.36. Sample B also had good curve except when the friction coefficient reduced from 0.40 to 0.30, the linear wear of stators increased from 2.00 to 69.33μm, and when rotors increased from1.40 to 52.85μmwhenever increasing SiC in sample B. The result was analyzed by the theory of friction-wear.The experimental results were notonly affected by the microstructures of samples A and B, but also by SiC produced and its microstructure.