| Abstract: | Composite materials including particles and fibers as oil-less bearing materials Oil-less bearing can be fabricated by polymers and metals including solid lubricants (up to 10 w %) like PTFE, MoS2 or graphite. If it is necessary by application to incorporate a greater content of solid lubricants, the mechanical properties of the composite materials are too weak. The mechanical properties of bearing material increase, when high tensile strength fibers are incorporated. In the case of graphite fiberreinforced polymers wear rate as well as coefficient of friction decrease, while the ultimate flexural strength increase rapidly. In the case of metallic matrices containing graphite fibers or steel wires the ultimate strength increases (above all the combination white metal/steel wire) as well as the wear rate decreases. |
