Examining of triboelectric phenomena on wear propertiesof metal-polymericfrictional couples

Abstract

The influence of triboelectric phenomena on the wear-friction properties of microasperities contacts of friction couples of drum – shoe brakes was explored. As a result of the conducted research into the wear-friction properties of metal-polymeric frictional couples of braking devices under laboratory and operational conditions at the nano-, microand millilevel during triboelectric interaction, the regularities of changes were established: of magnitudes of the contact difference of potentials of frictional couples grey cast iron – polymers of the drum-shoe brake on the surface temperature of linings and specific loads; -of circulating thermal and tribocurrents on the time of friction interaction of frictional couples cast iron – polymers and steel – polymers at different sliding velocities; of generated tribocurrents in the contact of two-layered structures steel – polymer and circulating tribocurrents through the three-layered structure steel – polymer – steel on the surface temperatures.