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Improved tribological behavior of DLC films under water lubrication by surface texturing

Improved tribological behavior of DLC films under water lubrication by surface texturing
Improved tribological behavior of DLC films under water lubrication by surface texturing
Textured diamond-like carbon (DLC) films with the pattern of parallel grooves were developed by depositing DLC on textured stainless substrates in a PVD system. The texturing effects on tribological performance of DLC in water-lubricated condition were investigated. Results show that introducing specific patterns into DLC film not only retains the low friction coefficients, but also dramatically extends coating lifetime through affecting the coating delamination behavior and graphitization process during friction. Besides the adherence difference induced by surface texturing which could influence the delamination, another possible mechanism, ‘‘buffer stripes’’, which is characteristic of the lateral soft/hard periodical structure,was proposed by us based on the Micro Raman spectroscopy and nanoindentation analysis. Additionally, a much lower graphitization for textured DLC during friction may also be responsible for the improved wear resistance.
surface texturing, DLC film, water lubrication, wear resistance
1023-8883
439-449
Ding, Qi
623e05db-27aa-4042-8c88-18831f45a427
Wang, Liping
ef5828b8-d874-42db-bb25-713890281af2
Wang, Yonqxin
752d915a-8d39-4bb7-b54c-f50ee42db0b3
Wang, S.C.
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Hu, Litian
7ef1eaab-b105-4b54-85d2-2ce3990e7871
Xue, Qunji
7614cf46-0701-4942-bfcf-3d480aa3537a
Ding, Qi
623e05db-27aa-4042-8c88-18831f45a427
Wang, Liping
ef5828b8-d874-42db-bb25-713890281af2
Wang, Yonqxin
752d915a-8d39-4bb7-b54c-f50ee42db0b3
Wang, S.C.
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Hu, Litian
7ef1eaab-b105-4b54-85d2-2ce3990e7871
Xue, Qunji
7614cf46-0701-4942-bfcf-3d480aa3537a

Ding, Qi, Wang, Liping, Wang, Yonqxin, Wang, S.C., Hu, Litian and Xue, Qunji (2011) Improved tribological behavior of DLC films under water lubrication by surface texturing. Tribology Letters, 41 (2), 439-449. (doi:10.1007/s11249-010-9730-1).

Record type: Article

Abstract

Textured diamond-like carbon (DLC) films with the pattern of parallel grooves were developed by depositing DLC on textured stainless substrates in a PVD system. The texturing effects on tribological performance of DLC in water-lubricated condition were investigated. Results show that introducing specific patterns into DLC film not only retains the low friction coefficients, but also dramatically extends coating lifetime through affecting the coating delamination behavior and graphitization process during friction. Besides the adherence difference induced by surface texturing which could influence the delamination, another possible mechanism, ‘‘buffer stripes’’, which is characteristic of the lateral soft/hard periodical structure,was proposed by us based on the Micro Raman spectroscopy and nanoindentation analysis. Additionally, a much lower graphitization for textured DLC during friction may also be responsible for the improved wear resistance.

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More information

e-pub ahead of print date: 4 December 2010
Published date: 1 February 2011
Keywords: surface texturing, DLC film, water lubrication, wear resistance
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 172895
URI: http://eprints.soton.ac.uk/id/eprint/172895
ISSN: 1023-8883
PURE UUID: 7299d77a-5b6e-4a19-993a-c79fc14c330b

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Date deposited: 01 Feb 2011 09:37
Last modified: 14 Mar 2024 02:30

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Contributors

Author: Qi Ding
Author: Liping Wang
Author: Yonqxin Wang
Author: S.C. Wang
Author: Litian Hu
Author: Qunji Xue

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