Abstract—

The tribological properties of carbon–carbon antifriction composite materials reinforced with carbon fabric based on polyacrylonitrile and viscose raw materials have been studied. Tribological tests were carried out according to the ring–disc scheme paired with silicon carbide ceramics under dry friction conditions with different orientations of the composite fabric layers relative to the friction surface in the temperature range of 80–100°C. Dependences of the friction coefficient and wear rate on the fabric orientation relative to friction surface, structure of the composite, and properties of its structural components were obtained at a fixed load and sliding speed. The surface of composites was analyzed after tribological tests using scanning electron microscopy and optical profilometry. The composites friction and wear mechanisms for different contact configurations and different material properties have been revealed. The characteristic features of composite individual structural (fibers, fiber bundles, layers of reinforcing fabric) frictional destruction have been determined. It has been established that the film of wear products formed on the friction surface has a decisive influence on the tribological characteristics of the studied materials. Combinations of the fabric base of the composite, its orientation relative to the friction surface, and the heat treatment mode of the material were determined, which simultaneously provide increased wear resistance and reduced friction in tandem with a ceramic counterbody.

中文翻译：

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摩擦过程中织物层与运动方向不同方向的碳织物复合材料的摩擦学性能

摘要-

研究了以聚丙烯腈和粘胶为原料的碳纤维增强碳-碳减摩复合材料的摩擦学性能。根据与碳化硅陶瓷配对的环盘方案，在80-100°C的温度范围内，在复合织物层相对于摩擦表面的不同取向的干摩擦条件下进行摩擦学测试。在固定载荷和滑动速度下，获得了摩擦系数和磨损率对相对于摩擦表面的织物取向、复合材料结构及其结构部件性能的依赖性。在摩擦学测试后，使用扫描电子显微镜和光学轮廓测定法对复合材料的表面进行了分析。不同接触结构和不同材料特性的复合材料摩擦和磨损机制已被揭示。复合材料单个结构（纤维、纤维束、增强织物层）摩擦破坏的特征已经确定。已经证实，摩擦表面上形成的磨损产物膜对所研究材料的摩擦学特性具有决定性影响。确定了复合材料的织物基底、其相对于摩擦表面的取向以及材料的热处理模式的组合，这与陶瓷配对体一起同时提供了增加的耐磨性和减少的摩擦。