Solid/liquid lubrication behavior of nickel aluminum-silver alloy under seawater condition

Shengyu Zhu, Yuan Yu, Jun Cheng, Zhuhui Qiao, Jun Yang, Weimin Liu

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

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 languageEnglish
Pages (from-to)9-16
Number of pages8
JournalWear
Volume420-421
DOIs
StatePublished - 15 Feb 2019
Externally publishedYes

Keywords

  • Ag
  • Intermetallic
  • Seawater
  • Solid/liquid lubrication

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