Friction and Wear Behavior of Flame Sprayed ETFE Coating

Ethylene Tetrafluoroethylene (ETFE) coating was prepared by flame spraying. Fourier transform infrared spectroscopy (FTIR) was used to characterize polymer degradation. The melt behavior of ETFE coating were investigated by differential scanning calorimeter (DSC). The friction and wear behaviors of the ETFE coating were examined using a MMW-1 test machine. The worn surfaces were investigated by scanning electron microscopy (SEM) and the wear mechanism was discussed. The results showed that the ETFE powder had no oxidation or degradation during flame spraying. Under the conditions of load at 20~120N and sliding speed at 20~120 r/min , the friction coefficient were from 0.250 6 to 0.344 8, and wear mass losses of coating from 0.0068g to 0.1578g , The wear mechanisms of the ETFE coating was dominated by fatigue, plastic deformation and adhesion wear in sliding against steel counterpart under dry sliding condition.