Details

Autor(en) / Beteiligte

• Qu, Jun
• Luo, Huimin
• Chi, Miaofang
• Ma, Cheng
• Blau, Peter J.
• Dai, Sheng
• Viola, Michael B.

Titel

Comparison of an oil-miscible ionic liquid and ZDDP as a lubricant anti-wear additive

Ist Teil von

• Tribology international, 2014-03, Vol.71, p.88-97

Ort / Verlag

United States: Elsevier Ltd

Erscheinungsjahr

2014

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• This paper reports the anti-scuffing/anti-wear behavior and mechanism of an oil-miscible ionic liquid (IL), trihexyltetradecylphosphonium bis(2-ethylhexyl)phosphate, in a base oil at 1.0wt% concentration under both room and elevated temperatures. Results are benchmarked against those for a conventional anti-wear additive, zinc dialkyl-dithiophosphate (ZDDP). Reciprocating sliding, boundary lubrication tests were conducted using a piston ring segment against a cylinder liner piece cut from actual automotive engine components. Although the IL and ZDDP worked equally well to prevent scuffing and reduce wear in the room-temperature tests, the IL significantly outperformed ZDDP in the 100°C tests. The top surfaces and cross sections of the worn surfaces were characterized to reveal the morphology, thickness, nanostructure, and chemical composition of the IL-induced tribo-films. [Display omitted] •Performance and mechanism of an oil-miscible ionic liquid as anti-wear additive.•Direct comparison between the IL and ZDDP at 1.0wt% treat rate in a PAO base oil.•While similar behavior at RT, the IL significantly outperforming ZDDP at 100°C.•Two-layer structured tribo-films revealed on both contact areas of the sliding pair.