Tribological evaluation of unlubricated and marginally lubricated bearing materials

Abstract

This thesis presents friction and wear rate measurements of the copper based bearing materials used in thrust bearing of aircraft fuel pumps. Highly detailed friction and wear data was collected from 20% and 30% lead in bronze (leaded bronze) substrates and 10% indium in lead (lead/indium) coated leaded bronze substrates in unlubricated and marginally lubricated conditions. Measurements were made under a wide range of load and speed using a thrust washer test apparatus and pin on disc test equipment