Wear-mechanism map of amorphous carbon nitride coatings sliding against silicon carbide balls in water

Fei Zhou, Koshi Adachi, Koji Kato

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

To understand the wear mechanism of amorphous carbon nitride coatings (a-CNx) sliding against SiC ball in water, the influence of tribological variables such as normal load (W) and sliding speed (V) on the friction coefficients (μ) and the specific wear rates (ws) was studied. The worn surfaces on disks and balls were observed by optical microscope (OM). The results indicate that the influence of the sliding speeds on the friction coefficients and the specific wear rates was more obvious than that of the normal loads. The friction coefficients and the specific wear rates decreased with an increase in the sliding speed, whereas with an increase in the normal loads, the friction coefficients and the specific wear rates fluctuated slightly. The specific wear rate of the a-CNx coatings was ten times larger than that of the SiC balls. When the sliding velocity was larger than 0.1 m/s, the friction coefficient of the a-CNx/SiC ball tribo-pair in water lubrication was smaller than 0.05 and the specific wear rates of the a-CNx coatings and the SiC balls all were at a lowest level of 10-8 and 10-9 mm3/Nm. Furthermore, the specific wear rates of a-CNx coatings and SiC balls increased linearly with friction coefficient (μ), while decreased linearly with the friction heat per unit time (μWV). To describe the friction and wear property of the a-CNx coatings sliding against SiC balls in water at the normal loads of 3 ∼ 15 N and the sliding speeds of 0.05∼0.5 m/s, the wear-mechanism map for the a-CNx/SiC tribo-pair in water was developed.

Original languageEnglish
Pages (from-to)4909-4917
Number of pages9
JournalSurface and Coatings Technology
Volume200
Issue number16-17
DOIs
Publication statusPublished - 2006 Apr 27

Keywords

  • Amorphous CN coatings
  • Friction
  • SiC ball
  • Water lubrication
  • Wear
  • Wear-mechanism map

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Wear-mechanism map of amorphous carbon nitride coatings sliding against silicon carbide balls in water'. Together they form a unique fingerprint.

Cite this