Examining of triboelectric phenomena on wear properties of metal-polymeric frictional couples

  • S. Kryshtopa
  • L. Kryshtopa
  • F. Kozak
  • M. Maslennikov
Keywords: metal-polymeric frictional couples, drum-shoe brake, disc brake, tribosystem, triboelectric processes

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-, micro- and 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

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Published
2019-07-29
Section
Articles