Hexagonal boron nitride as a component of the iron porous bearing: friction on the porous sinters up to 150 A degrees C

摘要

In this work, various concentrations of h-BN were added to the sintered porous (27.8 %) bearings and tested with three different mineral oil lubricants (hydrocarbon and refined) of varying viscosities. Tests were carried out to a working temperature of 150 A degrees C and the tribological properties of the sintered bearings were investigated. It was found that the optimum concentration (5 wt% h-BN) greatly improved these properties. These properties and their parameters such as hardness, wear resistance, friction coefficient, lubricant viscosity, friction forces, and temperature are discussed in depth.