Tribological improvement using ionic liquids as additives in synthetic and bio-based lubricants for steel-steel contacts
This study investigates the performance of three ionic liquids (ILs), trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate, trihexyl(tetradecyl)phosphonium decanoate, and 1-butyl-3-methylimidazolium tetrafluoroborate, as lubricant additives in synthetic oil polyalphaolefin (PAO8) an...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English English English |
| Published: |
Taylor & Francis
2019
|
| Subjects: | |
| Online Access: | http://irep.iium.edu.my/79616/ http://irep.iium.edu.my/79616/25/79616_Tribological%20Improvement%20Using%20Ionic%20Liquids_ft.pdf http://irep.iium.edu.my/79616/19/79616_Tribological%20Improvement%20Using%20Ionic%20Liquids_scopus.pdf http://irep.iium.edu.my/79616/3/79616_Tribological%20Improvement%20Using%20Ionic_wos.pdf |
| _version_ | 1848788801019707392 |
|---|---|
| author | Syahir, A. Z. Mohd Zulkifli, Nurin Wahidah Hassan, Masjuki Abul Kalam, Mohammad Harith, M. H. Yusoff, M. N.A.M. Zulfattah, Z. M. Jamshaid, Muhammad |
| author_facet | Syahir, A. Z. Mohd Zulkifli, Nurin Wahidah Hassan, Masjuki Abul Kalam, Mohammad Harith, M. H. Yusoff, M. N.A.M. Zulfattah, Z. M. Jamshaid, Muhammad |
| author_sort | Syahir, A. Z. |
| building | IIUM Repository |
| collection | Online Access |
| description | This study investigates the performance of three ionic liquids (ILs), trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate, trihexyl(tetradecyl)phosphonium decanoate, and 1-butyl-3-methylimidazolium tetrafluoroborate, as lubricant additives in synthetic oil polyalphaolefin (PAO8) and bio-based oil trimethylolpropane trioleate (TMPTO). The ILs were added at 0.5, 1.0, and 1.5 wt% concentrations and evaluated in terms of their miscibility with base oils as well as friction- and wear-reducing abilities. Four-ball and high-frequency reciprocating rig (HFRR) tribotesters were employed to evaluate the tribological performance under a boundary lubrication regime. Worn steel surfaces were characterized using optical microscopy, profilometry, scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX) analysis. The results suggested that the addition of trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate and trihexyl(tetradecyl)phosphonium decanoate improved the tribological performance of both PAO8 and TMPTO at an optimum concentration of 1 wt%. They showed good friction reduction, lower overall surface wear, and improved surface finishing. 1-Butyl-3-methylimidazolium tetrafluoroborate managed to improve the tribological performance of both base oils only at 0.5 wt%. A further increase in 1-butyl-3-methylimidazolium tetrafluoroborate concentration caused detrimental effects on the steel surface due to the formation of halogenic compounds. |
| first_indexed | 2025-11-14T17:46:35Z |
| format | Article |
| id | iium-79616 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English English |
| last_indexed | 2025-11-14T17:46:35Z |
| publishDate | 2019 |
| publisher | Taylor & Francis |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-796162020-10-08T03:55:03Z http://irep.iium.edu.my/79616/ Tribological improvement using ionic liquids as additives in synthetic and bio-based lubricants for steel-steel contacts Syahir, A. Z. Mohd Zulkifli, Nurin Wahidah Hassan, Masjuki Abul Kalam, Mohammad Harith, M. H. Yusoff, M. N.A.M. Zulfattah, Z. M. Jamshaid, Muhammad TJ Mechanical engineering and machinery This study investigates the performance of three ionic liquids (ILs), trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate, trihexyl(tetradecyl)phosphonium decanoate, and 1-butyl-3-methylimidazolium tetrafluoroborate, as lubricant additives in synthetic oil polyalphaolefin (PAO8) and bio-based oil trimethylolpropane trioleate (TMPTO). The ILs were added at 0.5, 1.0, and 1.5 wt% concentrations and evaluated in terms of their miscibility with base oils as well as friction- and wear-reducing abilities. Four-ball and high-frequency reciprocating rig (HFRR) tribotesters were employed to evaluate the tribological performance under a boundary lubrication regime. Worn steel surfaces were characterized using optical microscopy, profilometry, scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX) analysis. The results suggested that the addition of trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate and trihexyl(tetradecyl)phosphonium decanoate improved the tribological performance of both PAO8 and TMPTO at an optimum concentration of 1 wt%. They showed good friction reduction, lower overall surface wear, and improved surface finishing. 1-Butyl-3-methylimidazolium tetrafluoroborate managed to improve the tribological performance of both base oils only at 0.5 wt%. A further increase in 1-butyl-3-methylimidazolium tetrafluoroborate concentration caused detrimental effects on the steel surface due to the formation of halogenic compounds. Taylor & Francis 2019-03-03 Article PeerReviewed application/pdf en http://irep.iium.edu.my/79616/25/79616_Tribological%20Improvement%20Using%20Ionic%20Liquids_ft.pdf application/pdf en http://irep.iium.edu.my/79616/19/79616_Tribological%20Improvement%20Using%20Ionic%20Liquids_scopus.pdf application/pdf en http://irep.iium.edu.my/79616/3/79616_Tribological%20Improvement%20Using%20Ionic_wos.pdf Syahir, A. Z. and Mohd Zulkifli, Nurin Wahidah and Hassan, Masjuki and Abul Kalam, Mohammad and Harith, M. H. and Yusoff, M. N.A.M. and Zulfattah, Z. M. and Jamshaid, Muhammad (2019) Tribological improvement using ionic liquids as additives in synthetic and bio-based lubricants for steel-steel contacts. Tribology Transactions, 63 (2). pp. 235-250. ISSN 1040-2004 E-ISSN 1547-397X https://www.tandfonline.com/doi/full/10.1080/10402004.2019.1679934 10.1080/10402004.2019.1679934 |
| spellingShingle | TJ Mechanical engineering and machinery Syahir, A. Z. Mohd Zulkifli, Nurin Wahidah Hassan, Masjuki Abul Kalam, Mohammad Harith, M. H. Yusoff, M. N.A.M. Zulfattah, Z. M. Jamshaid, Muhammad Tribological improvement using ionic liquids as additives in synthetic and bio-based lubricants for steel-steel contacts |
| title | Tribological improvement using ionic liquids as additives in synthetic and bio-based lubricants for steel-steel contacts |
| title_full | Tribological improvement using ionic liquids as additives in synthetic and bio-based lubricants for steel-steel contacts |
| title_fullStr | Tribological improvement using ionic liquids as additives in synthetic and bio-based lubricants for steel-steel contacts |
| title_full_unstemmed | Tribological improvement using ionic liquids as additives in synthetic and bio-based lubricants for steel-steel contacts |
| title_short | Tribological improvement using ionic liquids as additives in synthetic and bio-based lubricants for steel-steel contacts |
| title_sort | tribological improvement using ionic liquids as additives in synthetic and bio-based lubricants for steel-steel contacts |
| topic | TJ Mechanical engineering and machinery |
| url | http://irep.iium.edu.my/79616/ http://irep.iium.edu.my/79616/ http://irep.iium.edu.my/79616/ http://irep.iium.edu.my/79616/25/79616_Tribological%20Improvement%20Using%20Ionic%20Liquids_ft.pdf http://irep.iium.edu.my/79616/19/79616_Tribological%20Improvement%20Using%20Ionic%20Liquids_scopus.pdf http://irep.iium.edu.my/79616/3/79616_Tribological%20Improvement%20Using%20Ionic_wos.pdf |