Article In: scopus, orcid
Improving the lubrication of silicon surfaces using ionic liquids as oil additives: the effect of sulfur-based functional groups
Tribology Letters
— 2020 — Springer
Key information
Authors:
Published in
05/30/2020
Abstract
The performance of micro/nanoelectromechanical systems (MEMS/NEMS) relies on efficient lubrication. In the present work, new sulfur-based organic salts were tested as additives in a polyethylene glycol to lubricate silicon surfaces used in the manufacture of MEMS/NEMS. Seven salts were tested: 1-butylsulfonic-3-methylimidazolium triflate [(C4SO3H)MIM][TfO], thiamine triflate [Thiamine][TfO]2, 1-ethyl-3-methylimidazolium camphorsulfonate [C2MIM][CSA] [isomers (R) and (S)], 1,3-dimethylpiridinium methylsulfate [C1-3pic][MeSO4], methylimidazolium methanesulfonate [HMIM][MeSO3], and tetramethylguanidine methanesulfonate [TMG][MeSO3]. A nanotribometer was used to determine the friction coefficients using steel spheres as counter bodies. Excellent tribological properties were achieved with the additives containing the anions [MeSO4]− and [MeSO3]−. The films formed on the Si substrates were studied by FTIR, ellipsometry and AFM. A mixed lubrication mechanism was proposed where additive adsorption avoids contact between sliding surfaces.
Publication details
Authors in the community:
Mónica Sofia Hoyos Antunes
ist173471
Fernando José Pires Caetano
ist90106
Luís Filipe da Silva dos Santos
ist12589
Rogério Anacleto Cordeiro Colaço
ist13267
Benilde de Jesus Vieira Saramago
ist11322
Publication version
VoR - Version of Record
Publisher
Springer
Link to the publisher's version
https://link.springer.com/article/10.1007/s11249-020-01308-7
Title of the publication container
Tribology Letters
Volume
68
Fields of Science and Technology (FOS)
materials-engineering - Materials engineering
Keywords
- Ionic liquids
- Additives
- Silicon
- Friction coefficient
Publication language (ISO code)
eng - English
Rights type:
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