Effect of Carbon Fiber Material and Orientation on Tribological Properties of Fabric Composites
摘要
The paper studies the tribological properties (friction coefficient and wear rate) of carbon-carbon fabric composites for antifriction purposes. The studied composites were reinforced with carbon fabric based on polyacrylonitrile fibers (PAN) and viscose raw materials, and both carbonized and graphitized carbon fibers were used for their production. The experimental tribological study was carried out according to the ring–disk contact scheme in a pair with a steel counterbody at different orientations of the composite fabric layers relative to the friction surface. Experimental dependences of the friction coefficient and wear rate on a number of characteristics (composite structure, properties of its structural components, and the orientation of the fabric layers) were obtained at fixed load–speed parameters. Using scanning electron microscopy methods, the surface of the composites and the steel counterbody was analyzed after tribological tests. It has been established that the film of wear products formed on the friction surface has a decisive effect on the tribological characteristics of the studied materials.