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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 4 2 μm/次降低到 17.5 6μm/次 ,摩擦因数较稳定 ,均为 0 .3 6,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 .4 0→ 0 .3 4→ 0 .3 0降低 ,静盘线性磨损量由 2 0→ 2 1 2 1→ 69 3 3 μm增加 ,对应的动盘线性磨损量也由 1 4→ 2 3 12→ 5 2 85 μm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
In order to improve the friction and wear properties of the carbon / carbon composites used in aviation brake assembly, two samples of A and B were infiltrated with Si. In the friction and wear test of sample A, the linear wear was reduced from 4 2 μm / Times to 17.5 6μm / times, the friction coefficient is relatively stable, are 0.36, and the friction and wear curves of the better type; after the sample B infiltration of Si infiltration than Si before the friction and wear curve is good, at the same time However, with the increase of SiC content in the sample, the friction coefficient decreased from 0. 4 0 → 0. 34 → 0. 3 0, and the linear wear of static disc increased from 20 → 2 1 2 1 → 69 3 3 μm, the corresponding linear wear of moving disc also increased from 1 4 → 2 3 12 → 5 2 85 μm, and the mechanism of friction and wear was analyzed.The experimental results show that the friction and wear properties On the one hand by the A, B two kinds of sample structure of the performance of the other hand, after the infiltration of Si generated by the performance of SiC and the different structure of the decision