Study of Friction-Reduction Properties of Fatty Acids and Adsorption Structures of their Langmuir–Blodgett Monolayers using Sum-Frequency Generation Spectroscopy and Atomic Force Microscopy

Hiroaki Koshima, Yoko Iyotani, Qiling Peng, Shen Ye

研究成果: Article査読

10 被引用数 (Scopus)

抄録

The establishment of a sustainable society requires fuel-efficient vehicles in which lubricants play important roles. Blending optimum amounts of friction modifiers with lubricant is widely used to reduce fuel consumption caused by frictional loss. However, selection of the appropriate blending still strongly depends on experience. To develop a general selection role for the friction-reduction additives based on a quantitative standard, a number of C18-based fatty acids have been evaluated on the solid surfaces by different methods in the present study. In addition to the measurement of the friction coefficient (μ), the adsorption structures of the Langmuir–Blodgett monolayers of the fatty acids and their effects on the friction-reduction behaviors have been investigated using surface pressure–area (π–A) isotherms, sum-frequency generation vibrational spectroscopy and atomic force microscope. The present experimental results demonstrate a certain relationship between the adsorption structures of the fatty acids on the solid surface and their friction-reduction behaviors.

本文言語English
論文番号34
ジャーナルTribology Letters
64
3
DOI
出版ステータスPublished - 2016 12 1
外部発表はい

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 表面および界面
  • 表面、皮膜および薄膜

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