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Gradient DLC-Based nanocomposite coatings as a solution to improve tribological performance of aluminum alloy

Gradient DLC-Based nanocomposite coatings as a solution to improve tribological performance of aluminum alloy
Gradient DLC-Based nanocomposite coatings as a solution to improve tribological performance of aluminum alloy
The low hardness and poor tribological performance of aluminum alloy as moving component greatly restricts their wide applications in automotive fields. In this letter, an attempt to deposit gradient Ti/TiN/Si/(TiC/a-C:H)multi-layer on aluminum alloy is thus effectively performed
by a combined arc ion plating and magnetron sputtering process based on the concept of involving coatings with a functionally graded interface. Multi-layered structure within DLC-based coatings has shown to significantly improve the load-bearing capacity, anti-wear and self-lubricating ability of Al alloys. The friction coefficient of gradient DLC-based coatings decreased to 0.18 under dry sliding condition while kept at 0.05 under the oil-lubricated conditions. The wear rate of gradient DLC
multilayers was lower by two and even three orders of
magnitude when compared with Al alloys both under dry
wear and oil-lubricated conditions. Such gradient DLCbased
coatings with good adhesion strength, high hardness,
and excellent tribological performance are considered as
potential protective surfaces of Al alloys for engine parts.
1023-8883
155-160
Wang, Liping
ef5828b8-d874-42db-bb25-713890281af2
Wan, Shahong
66483f9e-79b8-4585-8db2-90f67052b6ca
Wang, Shuncai
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Xue, Q.J.
4500f65d-5599-4975-85bd-6f5a2d28107d
Wang, Liping
ef5828b8-d874-42db-bb25-713890281af2
Wan, Shahong
66483f9e-79b8-4585-8db2-90f67052b6ca
Wang, Shuncai
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Xue, Q.J.
4500f65d-5599-4975-85bd-6f5a2d28107d

Wang, Liping, Wan, Shahong, Wang, Shuncai, Wood, R.J.K. and Xue, Q.J. (2010) Gradient DLC-Based nanocomposite coatings as a solution to improve tribological performance of aluminum alloy. Tribology Letters, 38 (2), 155-160. (doi:10.1007/s11249-010-9585-5).

Record type: Article

Abstract

The low hardness and poor tribological performance of aluminum alloy as moving component greatly restricts their wide applications in automotive fields. In this letter, an attempt to deposit gradient Ti/TiN/Si/(TiC/a-C:H)multi-layer on aluminum alloy is thus effectively performed
by a combined arc ion plating and magnetron sputtering process based on the concept of involving coatings with a functionally graded interface. Multi-layered structure within DLC-based coatings has shown to significantly improve the load-bearing capacity, anti-wear and self-lubricating ability of Al alloys. The friction coefficient of gradient DLC-based coatings decreased to 0.18 under dry sliding condition while kept at 0.05 under the oil-lubricated conditions. The wear rate of gradient DLC
multilayers was lower by two and even three orders of
magnitude when compared with Al alloys both under dry
wear and oil-lubricated conditions. Such gradient DLCbased
coatings with good adhesion strength, high hardness,
and excellent tribological performance are considered as
potential protective surfaces of Al alloys for engine parts.

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Published date: May 2010

Identifiers

Local EPrints ID: 148793
URI: http://eprints.soton.ac.uk/id/eprint/148793
ISSN: 1023-8883
PURE UUID: 89dd63ae-b8c9-489b-bede-e825ca8d9de8
ORCID for R.J.K. Wood: ORCID iD orcid.org/0000-0003-0681-9239

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Date deposited: 02 Jun 2010 11:42
Last modified: 14 Mar 2024 02:37

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Contributors

Author: Liping Wang
Author: Shahong Wan
Author: Shuncai Wang
Author: R.J.K. Wood ORCID iD
Author: Q.J. Xue

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