Abstract
The purpose of this work was to investigate whether a combination of solid lubrication with lubrication by seawater would be a feasible lubrication approach for marine applications such as propulsion system components, pumps, and other machinery. In particular, the friction and wear behavior of a high-strength, intermetallic-based solid-lubricating alloy (Ni3Al-Ag alloy) coupled with Al2O3 ceramic was investigated in simulated seawater. Under seawater conditions, the Ni3Al-Ag alloy exhibited a relatively low friction coefficient of 0.11–0.08 and a wear rate of about 1–2 × 10−7 mm3/Nm. It is proposed that the Ag alleviates plowing and adhesive actions of tribo-pair and retains chemical stability in seawater. Also, the seawater plays lubricating, cooling, and corrosive roles in the friction and wear response of the Ni3Al-Ag alloy. The improvement in tribological properties under seawater conditions is attributed to the synergistic action of solid and liquid lubrication.
Original language | English |
---|---|
Pages (from-to) | 9-16 |
Number of pages | 8 |
Journal | Wear |
Volume | 420-421 |
DOIs | |
State | Published - 15 Feb 2019 |
Externally published | Yes |
Keywords
- Ag
- Intermetallic
- Seawater
- Solid/liquid lubrication