Study on the Tribological Properties of Elastic-Metallic-Plastic Composite under Oil Lubrication Condition
油润滑条件下弹性金属塑料复合材料的摩擦磨损特性研究

The tribological properties of elastic metallic plastic (EMP) composite rubbing against steel under oil lubrication were investigated on a pin on disc friction and wear test rig, and their worn surfaces were examined with a scanning electron microscope. It has been found that the friction coefficients are relatively high at low load and decrease with the increase of load, then stabilize around 0.03 at a sliding speed below 3.52m/s. The wear rate of EMP increases with the increase of velocity and load at a different pace under various test conditions. By analyzing the isogram of wear rate for EMP steel pair, it was found that a lower wear rate of EMP was registered at a load below 1515N and a sliding speed below 3.50m/s. Observation of the worn surfaces of both the EMP composites and the counterpart steel by scanning electron microscope indicates that the wear of the EMP composites is characterized by micro cutting, extruding deformation and ploughing at a sliding speed below 3.52m/s, and a transfer film is formed on the counterpart steel surface. The wear of the EMP composites at a sliding speed 5.24m/s is characterized by surface softening and melting.