Artigo De: 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
Informações chave
Autores:
Publicado em
30/05/2020
Resumo
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.
Detalhes da publicação
Autores da comunidade :
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
Versão da publicação
VoR - Versão publicada
Editora
Springer
Ligação para a versão da editora
https://link.springer.com/article/10.1007/s11249-020-01308-7
Título do contentor da publicação
Tribology Letters
Volume
68
Domínio Científico (FOS)
materials-engineering - Engenharia dos Materiais
Palavras-chave
- Ionic liquids
- Additives
- Silicon
- Friction coefficient
Idioma da publicação (código ISO)
eng - Inglês
Acesso à publicação:
Acesso apenas a metadados