Behaviours of ultra-thin lubricant films between solid surfaces having atomic scale roughness

T. Okumura, Joichi Sugimura, Y. Yamamoto

Research output: Contribution to journalArticle

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Abstract

Molecular dynamics simulations were conducted in order to study effects of mono-atomic scale steps on sliding surfaces on the dynamic behaviour of lubricant molecules under high pressure and shear. Hydrocarbons, including n-hexane, cyclohexane and n-hexadecane, were assumed as lubricants. Simulations were made such that two layers of lubricant molecules were formed. It was found that steps on the surfaces had dramatic effects on interactions between surface atoms and lubricant molecules. Movements of lubricant molecules, and thus traction between the surfaces, were affected by interactions between the molecules and those between the molecules and the roughness structure, both of which depended on the molecular structure of the lubricant.

Original languageEnglish
Pages (from-to)225-233
Number of pages9
JournalTribology Series
Volume41
Publication statusPublished - Jan 1 2003

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Solid lubricants
Lubricants
Surface roughness
Molecules
Cyclohexane
Hexane
Molecular structure
Molecular dynamics
Hydrocarbons
Atoms
Computer simulation

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Behaviours of ultra-thin lubricant films between solid surfaces having atomic scale roughness. / Okumura, T.; Sugimura, Joichi; Yamamoto, Y.

In: Tribology Series, Vol. 41, 01.01.2003, p. 225-233.

Research output: Contribution to journalArticle

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