文摘
The Ni3Al matrix self-lubricating composite was fabricated by powder metallurgy technique. The tribological behavior of the composite sliding against commercial Si3N4, SiC and Al2O3 ceramic balls was investigated from 20 to 1000 °C. It was found that the composite demonstrated excellent lubricating properties with different friction pairs at a wide temperature range, which can be attributed to the synergetic effect of Ag, fluorides, and molybdates formed by oxidations. The Ni3Al matrix self-lubricating composite/Si3N4 couple possessed the stable friction coefficient and wear rate.