陶瓷填充聚苯硫醚复合材料的摩擦化学作用机理

The Tribochemical Mechanisms of Ceramic Particle Filled Polyphenylene Sulfide Composites Sliding Against Tool Steel

用扫描电镜和 X射线光电子能谱研究了聚苯硫醚 -陶瓷复合材料 /工具钢摩擦副的摩擦化学作用机理 .结果发现 ,在摩擦过程中 ,Si C、Si3N4 、Al2 O3和 Cr3C2 填充聚苯硫醚复合材料中的聚苯硫醚基体均发生分解 ,分解产物同偶件铁发生化学反应生成有利于提高转移膜与偶件表面结合强度的摩擦化学产物 。

The tribochemical mechanisms of ceramic particle filled polyphenylene sulfide composites sliding against tool steel were investigated by means of scanning electron microscopy and X ray photoelectron spectroscopy. It has been found that the polyphenylene sulfide matrix in the composites filled with SiC, Si 3N 4, Al 2O 3 and Cr 3C 2 underwent tribochemical degradation during the friction process. The degraded products react chemically with counterface Fe and atmospheric O 2, thus generating the compounds such as FeS and FeSO 4 which are helpful in increasing the bonding strength of the transfer film onto the steel substrate. This accounts for the increase in the wear resistance of ceramic particle filled polyphenylene sulfide composites.