Structure and water-lubricated tribological properties of Cr/a-C coatings with different Cr contents
Structure and water-lubricated tribological properties of Cr/a-C coatings with different Cr contents
The Cr containing amorphous carbon coatings (Cr/a-C) with varying Cr content were deposited using unbalanced magnetron sputtering. The results revealed that the chromium carbide nano-clusters were formed when the Cr content exceeded 4.9at.%. The critical load increased while the hardness decreased after the Cr element incorporation. Although the low Cr containing Cr/a-C coatings (?4.9at.%) exhibited similar friction coefficient with a-C coatings, but the initial friction coefficient, running-in distance and wear rate of SUS440C balls all decreased. However, the Cr/a-C coatings with high Cr content (11.98~14.09at.%) would worsen the tribological properties because chromium carbides acted as abrasive wear particles during tribotests.
hydrogen-free carbon based coatings, mechanical properties, microstructure, tribology
104-115
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
Wang, Chundong
4a326956-38ca-4bc9-9077-03904b950e27
Zhang, Wenjun
5fec7a3f-8b30-4f58-86ea-f75b82efdda0
Li, Lawrence Kwok-Yan
1be013ff-b4b7-4479-a8b6-08a515c967e6
Lee, Shuit-Tong
bca61648-b3cc-4c93-a582-76e995c2c7ce
November 2013
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
Wang, Chundong
4a326956-38ca-4bc9-9077-03904b950e27
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, Wang, Chundong, Zhang, Wenjun, Li, Lawrence Kwok-Yan and Lee, Shuit-Tong
(2013)
Structure and water-lubricated tribological properties of Cr/a-C coatings with different Cr contents.
Tribology International, 67, .
(doi:10.1016/j.triboint.2013.07.002).
Abstract
The Cr containing amorphous carbon coatings (Cr/a-C) with varying Cr content were deposited using unbalanced magnetron sputtering. The results revealed that the chromium carbide nano-clusters were formed when the Cr content exceeded 4.9at.%. The critical load increased while the hardness decreased after the Cr element incorporation. Although the low Cr containing Cr/a-C coatings (?4.9at.%) exhibited similar friction coefficient with a-C coatings, but the initial friction coefficient, running-in distance and wear rate of SUS440C balls all decreased. However, the Cr/a-C coatings with high Cr content (11.98~14.09at.%) would worsen the tribological properties because chromium carbides acted as abrasive wear particles during tribotests.
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Accepted/In Press date: 10 July 2013
e-pub ahead of print date: 26 July 2013
Published date: November 2013
Keywords:
hydrogen-free carbon based coatings, mechanical properties, microstructure, tribology
Organisations:
nCATS Group
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Local EPrints ID: 377167
URI: http://eprints.soton.ac.uk/id/eprint/377167
ISSN: 0301-679X
PURE UUID: cfbddb6e-0e1c-4fc6-86eb-7a66b4bbe8c6
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Date deposited: 01 Jun 2015 13:59
Last modified: 14 Mar 2024 19:57
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Author:
Qianzhi Wang
Author:
Fei Zhou
Author:
Xiangdong Ding
Author:
Zhifeng Zhou
Author:
Chundong Wang
Author:
Wenjun Zhang
Author:
Lawrence Kwok-Yan Li
Author:
Shuit-Tong Lee
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