In this paper, it was reported that the Ni3Al matrix composites have self-lubricating properties at a wide
temperature range from room temperature to 1 000℃. This composite was selected based on the premise that Ni3Al intermetallics
with favorable strength and oxidition resistance would act as high temperature matrix; silver and fluorides reduced
friction coefficient at low and high temperatures, respectively. The composites were fabricated by powder metallurgy
route, and their mechanical properties at elevated temperatures were investigated. Moreover, the tribological tests
at different temperature and speed conditions were conducted on an HT-1000 ball-on-disk high temperature tribometer
and a pin-on-disk high speed tribometer, respectively. It was found that the Ni3Al matrix composites have excellent mechanical
performance (compressive strength 40 to 45 MPa) and self-lubricating properties (friction coefficient 0. 28 to
0.25), and provide the steady and low friction coefficient under high load and speed conditions.