Ceramic composites are extremely sensitive to the surrounding environment. Their tribological performance may degrade drastically if they are polluted by some external agent. The present article was aimed to investigate the unidirectional sliding characteristics of brake oil treated woven carbon-carbon (C/C), and carbon-carbon-silicon carbide (C/C-SiC) composites. The laminate orientation, surface conformity, normal load, and sliding velocity were varied. It was depicted that the quantity of oil absorbed by the composites depends on the laminate orientation. The decay rate in friction coefficient revealed that C/C composites are more prone to brake oil in comparison to C/C-SiC composites. The results showed that it is difficult to make an assumption regarding the wear and friction behavior of laminated composites in low conformity contacts concerning normal load and sliding velocity. However, friction coefficient increased with increment in sliding velocity and normal load, for non-conformal Hertzian contacts. The generation of friction film was arduous in the presence of absorbed oil. SEM analysis of worn surfaces revealed different surface morphology for low, and non-conformal contacts which depicted distinct tribological mechanisms.

陶瓷复合材料对周围环境极为敏感。如果它们被某些外部因素污染，其摩擦学性能可能会急剧下降。本文旨在研究制动油处理的机织碳-碳（C / C）和碳-碳-碳化硅（C / C-SiC）复合材料的单向滑动特性。层压板的方向，表面贴合性，法向载荷和滑动速度均发生变化。描绘了复合材料吸收的油量取决于层压板的取向。摩擦系数的衰减率表明，与C / C-SiC复合材料相比，C / C复合材料更容易刹车油。结果表明，很难就低合格接触中层状复合材料的磨损和摩擦性能做出正常载荷和滑动速度的假设。但是，对于非等形赫兹接触，摩擦系数随着滑动速度和法向载荷的增加而增加。在存在吸收的油的情况下，摩擦膜的产生很困难。磨损表面的SEM分析显示，低接触和非保形接触的表面形态不同，这表明了不同的摩擦学机理。