Friction and wear of porous sliding bearings At high temperature. Influence of MoS₂ Nanoparticle solid lubricant

Abstract

The paper is devoted to analysis of friction and wear of real porous sliding bearings modified with solid lubricant layers at high temperature. For this purpose, a special homemade friction tester was applied. The technology of sleeve nitriding is described. The results of the friction tests reveal about the achievement of quasi-hydrodynamic lubrication regime of powder bearings. The lowest friction coefficient is found to be f = 0.04 at 300 °C. The great effect of wear rate diminishing is obtained at 300 °C as interaction of microasperities is j preserved at the sliding interface in quasi-hydrodynamic lubrication regime.