Abstract
Tribological behavior of nickel aluminum alloy containing silver constructed by powder metallurgy was investigated in a broad temperature range. It is noticed that Ni3Al alloy-20 wt% Ag exhibits favorable lubricating properties especially at and above 800 °C. The self-lubricating alloy possesses coefficient of friction (CoF) and wear rate (WR) low to 0.2 and 1–2 × 10−5 mm3/Nm, respectively. Moreover, a lubricating mechanism is proposed that at low temperatures, Ag provides effective lubrication; while at elevated temperatures; silver molybdate created by tribological chemical reactions contributes to low CoF. It is demonstrated that combination of Ag and Ag2MoO4 is a feasible way that plays a synergistic effect and generates excellent lubricity in a wide range of temperatures.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
