Tribological properties of protic ionic liquid and functionalized copper oxide nanoparticles as additives to base oil
| Autor: | Sven Oras, Rünno Lõhmus, Uno Mäeorg, Kristjan Saal, U. Joost, Triinu Taaber, A. E. Enok, Martin Järvekülg |
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| Rok vydání: | 2015 |
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| Zdroj: | Mechanics. 21 |
| ISSN: | 2029-6983 1392-1207 |
| Popis: | The aim of the present study was to investigate a novel composite as lubricant additive for metal wear parts, composing of protic ionic liquid and functionalized copper oxide nanoparticle composite. A simple and an easy-to-modify synthesis method for the preparation of thiol cov-ered copper oxide nanoparticles was developed. A long process of optimization of reaction parameters was carried out that resulted in preparing non-agglomerated oil dis-persible copper oxide nanoparticles with an estimated av-erage diameter of 60 nanometers based on SEM measure-ments. Novel protic ionic liquid, which dissolves in oil was synthesized. Lubricant tribological experiments with the standardized four-ball-method were conducted with 15 kg. The addition of 3% ionic liquid and 0.5% copper oxide nanoparticles to base oil reduced the wear up to 35% com-pared to base oil without any additives, while 1% of protic IL reduced wear up to 47%. In addition, the novel type lubricant additive has many advantages and can also widen the range of applications, e.g. wider temperature range and preserved functionality at harsh conditions where oil-based lubricants fail.DOI: http://dx.doi.org/10.5755/j01.mech.21.2.11723 |
| Databáze: | OpenAIRE |
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