Why does a phosphonium-phosphinate ionic liquid protect the contact surfaces from wear and micropitting but increase vibration when used as an additive in rolling-sliding lubrication?
Abstract
A phosphonium-phosphinate ionic liquid (IL) was studied as a lubricant additive for rolling-sliding contacts. The bench-scale test was designed to simulate automotive rear axle operation during cold start, highway towing, and overload conditions. Adding such an IL (2%) into a base oil significantly reduced wear loss and rolling contact fatigue, e.g., microcracking and micropitting, but made the vibrational noise notably higher under a low (-1.5%) sliding roll ratio (SRR). Additionally, worn surface characterization revealed an interesting texture pattern with alternating smoother plateaus and rougher valleys, which is believed to cause the high vibration. No increased vibration was observed at a high (-30%) SRR, possibly because the more aggressive sliding abrasion prevented such a surface texture from forming.
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1773658
- Alternate Identifier(s):
- OSTI ID: 1781939
- Grant/Contract Number:
- AC05-00OR22725; CNMS2019-097
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Tribology International
- Additional Journal Information:
- Journal Volume: 159; Journal ID: ISSN 0301-679X
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; ionic liquid; lubricant additive; rolling contact fatigue; micropitting; vibration
Citation Formats
Roy, Sougata, Stump, Benjamin, Luo, Huimin, Leonard, Donovan, and Qu, Jun. Why does a phosphonium-phosphinate ionic liquid protect the contact surfaces from wear and micropitting but increase vibration when used as an additive in rolling-sliding lubrication?. United States: N. p., 2021.
Web. doi:10.1016/j.triboint.2021.106949.
Roy, Sougata, Stump, Benjamin, Luo, Huimin, Leonard, Donovan, & Qu, Jun. Why does a phosphonium-phosphinate ionic liquid protect the contact surfaces from wear and micropitting but increase vibration when used as an additive in rolling-sliding lubrication?. United States. https://doi.org/10.1016/j.triboint.2021.106949
Roy, Sougata, Stump, Benjamin, Luo, Huimin, Leonard, Donovan, and Qu, Jun. Wed .
"Why does a phosphonium-phosphinate ionic liquid protect the contact surfaces from wear and micropitting but increase vibration when used as an additive in rolling-sliding lubrication?". United States. https://doi.org/10.1016/j.triboint.2021.106949. https://www.osti.gov/servlets/purl/1773658.
@article{osti_1773658,
title = {Why does a phosphonium-phosphinate ionic liquid protect the contact surfaces from wear and micropitting but increase vibration when used as an additive in rolling-sliding lubrication?},
author = {Roy, Sougata and Stump, Benjamin and Luo, Huimin and Leonard, Donovan and Qu, Jun},
abstractNote = {A phosphonium-phosphinate ionic liquid (IL) was studied as a lubricant additive for rolling-sliding contacts. The bench-scale test was designed to simulate automotive rear axle operation during cold start, highway towing, and overload conditions. Adding such an IL (2%) into a base oil significantly reduced wear loss and rolling contact fatigue, e.g., microcracking and micropitting, but made the vibrational noise notably higher under a low (-1.5%) sliding roll ratio (SRR). Additionally, worn surface characterization revealed an interesting texture pattern with alternating smoother plateaus and rougher valleys, which is believed to cause the high vibration. No increased vibration was observed at a high (-30%) SRR, possibly because the more aggressive sliding abrasion prevented such a surface texture from forming.},
doi = {10.1016/j.triboint.2021.106949},
journal = {Tribology International},
number = ,
volume = 159,
place = {United States},
year = {Wed Feb 24 00:00:00 EST 2021},
month = {Wed Feb 24 00:00:00 EST 2021}
}
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