期刊
WEAR
卷 466, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.wear.2020.203588
关键词
Ionic liquids; Lubricant additives; Micropitting; Gear; Rolling contact fatigue
资金
- Vehicle Technologies Office of Office of Energy Efficiency and Renewable Energy of U.S. Department of Energy (DOE)
- Tank Automotive Research of Development and Engineering Center (TARDEC) of U.S. Army of U.S. Department of Defense (DoD)
- Scientific User Facilities Division, Office of DOE-BES
- U.S. Department of Energy [DEAC05-00OR22725]
This study demonstrated the feasibility of using a phosphonium phosphate ionic liquid as an anti-wear and anti-pitting additive for rear axle lubricant. The results showed effective surface protection for wear and micro-cracking, leading to the production of low-viscosity gear oils with superior rolling contact fatigue mitigation. Full-scale hub dynamometer tests further confirmed the improved power output and torque generation of the IL-containing gear oils compared to commercial benchmarks.
This study explored the feasibility of using a phosphonium phosphate ionic liquid as a candidate anti-wear and anti-pitting additive for rear axle lubricant. This particular IL was first added to a VHVI8 base oil at 2-3% concentration and demonstrated effective surface protection for wear and micro-cracking under rolling-sliding contacts. The promising results directed to a step further to produce a series of IL-containing low-viscosity (about a half of SAE 75W-90) fully formulated gear oils. Selected IL-containing experimental oils showed superior mitigation of rolling contact fatigue to a commercial SAE 75W-90 gear oil in bench-scale rolling-sliding tests. Full-scale hub dynamometer tests were then conducted and demonstrated more than 3% power output and torque generation for an IL-containing low-viscosity gear oil benchmarked against commercial baselines.
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