Synergistic Enhancement of the Lubrication Performance of Zinc Dialkyldithiophosphate by Coexistence with Ionic Liquid

• Sato Kaisei

  Department of Mechanical Engineering, Graduate School of Tokyo University of Science

• Okubo Hikaru

  Mechanics and System Engineering, Kyoto Institute of Technology

• Kawada Shouhei

  Department of Mechanical Engineering, Kansai University

• Watanabe Seiya

  Department of Mechanical Engineering, Tokyo University of Science

• Sasaki Shinya

  Department of Mechanical Engineering, Tokyo University of Science

抄録

Ionic liquids (ILs) are being considered as novel lubricant additives to improve the friction and anti-wear characteristics of sliding surfaces. Because ILs consist of only cations and anions, their physical and chemical properties can be easily tailored by modifying their combination. These features enable to design of specific ILs for a given tribological system. However, there are few reports on the effect of ILs used as lubricant additives on the friction and anti-wear characteristics of sliding surfaces. Moreover, it is necessary to investigate the synergism between ILs and other lubricant additives to achieve high practical efficiency. Therefore, in this study, two ILs with different cations but similar anions were used in combination with an anti-wear additive, zinc dialkyldithiophosphate (ZDDP), and the resultant wear and friction characteristics of the worn surfaces were analyzed. We found that the tribological performance under steel/steel sliding conditions was dependent on the chemical composition of the ILs. In addition, mixed ZDDP and IL solutions exhibited lower friction and wear when compared to ZDDP alone. It is considered that the excellent lubrication and frictional performance observed with the mixed lubricant solutions is due to the formation of tribofilms comprising of ZDDP and IL on the sliding surface.

収録刊行物

• Tribology Online

  Tribology Online 16 (3), 178-191, 2021-09-30

  一般社団法人 日本トライボロジー学会

キーワード

• ionic liquid
• zinc dialkyldithiophosphate
• lubricant additive
• tribofilm
• surface analysis

詳細情報

• CRID: 1390852503354549888
• NII論文ID: 130008094046
• DOI: 10.2474/trol.16.178
• ISSN: 18812198
• ISSN: 1881218X
• Web Site: https://www.jstage.jst.go.jp/article/trol/16/3/16_178/_pdf
• 本文言語コード: en
• データソース種別:
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