Tribological performance of DLC coatings under water lubrication

Chaoqun Zhang, Masahiro Fujii

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

DLC coatings are currently used in a wide variety of industrial fields because of their outstanding properties such as high hardness, high wear resistance, low friction and so on under oil lubrication as well as no lubrication. The tribological properties were compared with six types of DLC coatings: amorphous hydrogenated DLC (a-C:H), that doped with tungsten (a-C:H:W), that doped with silicon (a-C:H:Si) and hydrogen-free DLC (ta-C). Sliding tests were conducted under water lubrication at sliding velocities of 0.02 m/s and 0.1 m/s. DLC coatings showed low friction coefficient and excellent wear resistance. Friction coefficient and wear rate decreased with increasing sliding velocity. The effect of surface wettability and mechanical properties on tribological characteristic were investigated. Friction coefficient decreased as the contact angle increased. Hydrogen-free DLC-4 with the highest hardness showed the highest friction and a larger wear. Furthermore, DLC coatings deposited with interlayer showed longer lifetimes.

Original languageEnglish
Title of host publication2015 IFToMM World Congress Proceedings, IFToMM 2015
PublisherNational Taiwan University
ISBN (Electronic)9789860460988
DOIs
Publication statusPublished - 2015
Event14th International Federation for the Promotion of Mechanism and Machine Science World Congress, IFToMM 2015 - Taipei, Taiwan, Province of China
Duration: Oct 25 2015Oct 30 2015

Other

Other14th International Federation for the Promotion of Mechanism and Machine Science World Congress, IFToMM 2015
CountryTaiwan, Province of China
CityTaipei
Period10/25/1510/30/15

Fingerprint

Lubrication
Friction
Coatings
Water
Hydrogen
Wear resistance
Hardness
Wear of materials
Contact angle
Tungsten
Wetting
Underwater
Silicon
Mechanical properties
Wear Resistance

Keywords

  • DLC
  • Friction
  • Water lubrication
  • Wear

ASJC Scopus subject areas

  • Mechanical Engineering
  • History

Cite this

Zhang, C., & Fujii, M. (2015). Tribological performance of DLC coatings under water lubrication. In 2015 IFToMM World Congress Proceedings, IFToMM 2015 National Taiwan University. https://doi.org/10.6567/IFToMM.14TH.WC.OS18.019

Tribological performance of DLC coatings under water lubrication. / Zhang, Chaoqun; Fujii, Masahiro.

2015 IFToMM World Congress Proceedings, IFToMM 2015. National Taiwan University, 2015.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhang, C & Fujii, M 2015, Tribological performance of DLC coatings under water lubrication. in 2015 IFToMM World Congress Proceedings, IFToMM 2015. National Taiwan University, 14th International Federation for the Promotion of Mechanism and Machine Science World Congress, IFToMM 2015, Taipei, Taiwan, Province of China, 10/25/15. https://doi.org/10.6567/IFToMM.14TH.WC.OS18.019
Zhang C, Fujii M. Tribological performance of DLC coatings under water lubrication. In 2015 IFToMM World Congress Proceedings, IFToMM 2015. National Taiwan University. 2015 https://doi.org/10.6567/IFToMM.14TH.WC.OS18.019
Zhang, Chaoqun ; Fujii, Masahiro. / Tribological performance of DLC coatings under water lubrication. 2015 IFToMM World Congress Proceedings, IFToMM 2015. National Taiwan University, 2015.
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