Tribological properties of three-component solid-lubricant PEI-based composites under point and line contact conditions.

The structure, the mechanical and tribological properties of PEI-based composites reinforced with chopped carbon fibers and simultaneously loaded with solid lubricant fillers of various nature (PTFE, graphite) were investigated under both point and linear contact conditions. It was shown that their tribological properties could be improved by the formation of a transfer film on the friction surfaces. This process was determined by the chemical activity of the solid lubricant filler and the scheme of the tribological contact. [ABSTRACT FROM AUTHOR]