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Influences of ceramic mating balls on the tribological properties of Cr/a-C coatings with low chromium content in water lubrication

Influences of ceramic mating balls on the tribological properties of Cr/a-C coatings with low chromium content in water lubrication
Influences of ceramic mating balls on the tribological properties of Cr/a-C coatings with low chromium content in water lubrication
The influences of ceramic mating balls (SiC, Si3N4, Al2O3) on the tribological properties for hydrogen-free amorphous carbon (a-C) coatings and Cr/a-C coatings with low Cr content (3at.%) in water lubrication were investigated. The composition and microstructure of a-C and Cr/a-C coatings were characterized by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy, respectively, and the mechanical and water-lubricated tribological properties were investigated using nano-indenter and ball-on-disc tribo-meter. The results revealed that the sp3/sp2 ratio of the Cr/a-C coatings increased, while the hardness and water wetting contact angle for the Cr/a-C coatings decreased in comparison to those of a-C coatings. The ranking of friction coefficients for a-C/balls and Cr/a-C/balls tribopairs was >>, which was determined by the interactive effects among mechanical properties, hydration reaction and contact pressure for coatings/balls tribopair. The specific wear rates of Cr/a-C coatings were slightly higher than those of a-C coatings.
carbon-based coatings, sliding friction, wear testing, tribochemistry
0043-1648
354-360
Wang, Qianzhi
696b2954-9bbe-4e19-a9d2-22435e55d9b4
Zhou, Fei
aaf54725-aefa-4df9-a69c-07b3f60060fc
Ding, Xiangdong
cdaeff6e-127e-460d-a1bf-afba3582daab
Zhou, Zhifeng
fb070de3-bcb2-4923-9c60-e76b61f89f5f
Zhang, Wenjun
5fec7a3f-8b30-4f58-86ea-f75b82efdda0
Li, Lawrence Kwok-Yan
1be013ff-b4b7-4479-a8b6-08a515c967e6
Lee, Shuit-Tong
bca61648-b3cc-4c93-a582-76e995c2c7ce
Wang, Qianzhi
696b2954-9bbe-4e19-a9d2-22435e55d9b4
Zhou, Fei
aaf54725-aefa-4df9-a69c-07b3f60060fc
Ding, Xiangdong
cdaeff6e-127e-460d-a1bf-afba3582daab
Zhou, Zhifeng
fb070de3-bcb2-4923-9c60-e76b61f89f5f
Zhang, Wenjun
5fec7a3f-8b30-4f58-86ea-f75b82efdda0
Li, Lawrence Kwok-Yan
1be013ff-b4b7-4479-a8b6-08a515c967e6
Lee, Shuit-Tong
bca61648-b3cc-4c93-a582-76e995c2c7ce

Wang, Qianzhi, Zhou, Fei, Ding, Xiangdong, Zhou, Zhifeng, Zhang, Wenjun, Li, Lawrence Kwok-Yan and Lee, Shuit-Tong (2013) Influences of ceramic mating balls on the tribological properties of Cr/a-C coatings with low chromium content in water lubrication. Wear, 303 (1-2), 354-360. (doi:10.1016/j.wear.2013.03.044).

Record type: Article

Abstract

The influences of ceramic mating balls (SiC, Si3N4, Al2O3) on the tribological properties for hydrogen-free amorphous carbon (a-C) coatings and Cr/a-C coatings with low Cr content (3at.%) in water lubrication were investigated. The composition and microstructure of a-C and Cr/a-C coatings were characterized by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy, respectively, and the mechanical and water-lubricated tribological properties were investigated using nano-indenter and ball-on-disc tribo-meter. The results revealed that the sp3/sp2 ratio of the Cr/a-C coatings increased, while the hardness and water wetting contact angle for the Cr/a-C coatings decreased in comparison to those of a-C coatings. The ranking of friction coefficients for a-C/balls and Cr/a-C/balls tribopairs was >>, which was determined by the interactive effects among mechanical properties, hydration reaction and contact pressure for coatings/balls tribopair. The specific wear rates of Cr/a-C coatings were slightly higher than those of a-C coatings.

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More information

Accepted/In Press date: 28 March 2013
e-pub ahead of print date: 9 April 2013
Published date: 15 June 2013
Keywords: carbon-based coatings, sliding friction, wear testing, tribochemistry
Organisations: nCATS Group

Identifiers

Local EPrints ID: 377168
URI: http://eprints.soton.ac.uk/id/eprint/377168
ISSN: 0043-1648
PURE UUID: e4e59ddd-4f96-455a-98ea-b1c4d73a29f4

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Date deposited: 01 Jun 2015 14:03
Last modified: 14 Mar 2024 19:57

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Contributors

Author: Qianzhi Wang
Author: Fei Zhou
Author: Xiangdong Ding
Author: Zhifeng Zhou
Author: Wenjun Zhang
Author: Lawrence Kwok-Yan Li
Author: Shuit-Tong Lee

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