Fabrication of CrAlN nanocomposite films with high hardness and excellent anti-wear performance for gear application
Fabrication of CrAlN nanocomposite films with high hardness and excellent anti-wear performance for gear application
CrAlN nanocomposite films with various Al contents were prepared by a reactive magnetron sputtering
technique using Cr and Al targets in the reactive gas mixture. The micro-structure, mechanical properties and
tribological behaviors of traditional CrN and newly-fabricated CrAlN nanocomposite films were compared.
XRD results showed that single-phase fcc (face-centered cubic) CrAlN films formed a solid solution whereby
Cr atoms were substituted by Al atoms. High resolution TEM results demonstrate that the CrAlN film
possesses a unique amorphous/crystalline nanocomposite micro-structure with ?5 nm crystalline uniformly
embedded into an amorphous matrix. In addition, CrAlN nanocomposite films exhibited relatively smaller
grain size and denser structure when compared with CrN films. All the CrAlN nanocomposite films with the
highest hardness being approximately 33.4 GPa exhibited much higher hardness and better wear resistance
than traditional CrN films The excellent anti-wear performance of CrAlN nanocomposite films can be
attributed to an amorphous/crystalline nanocomposite micro-structure and their high hardness. CrAlN
nanocomposite films are considered as potential protective surfaces for such kinds of moving parts as gears,
cutting tools and shafts used in engine and other mechanical mechanisms.
CrAlN nanocomposite films, magnetron sputtering, micro-structure, mechanical properties, tribological performance
Wang, Liping
ef5828b8-d874-42db-bb25-713890281af2
Zhang, Guangan
562918cf-f3df-4647-b855-392f10a1dce6
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Wang, S.C.
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Xue, Q.J.
4500f65d-5599-4975-85bd-6f5a2d28107d
2010
Wang, Liping
ef5828b8-d874-42db-bb25-713890281af2
Zhang, Guangan
562918cf-f3df-4647-b855-392f10a1dce6
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Wang, S.C.
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Xue, Q.J.
4500f65d-5599-4975-85bd-6f5a2d28107d
Wang, Liping, Zhang, Guangan, Wood, R.J.K., Wang, S.C. and Xue, Q.J.
(2010)
Fabrication of CrAlN nanocomposite films with high hardness and excellent anti-wear performance for gear application.
Surface and Coatings Technology, 204 (3617-3624).
(doi:10.1016/j.surfcoat.2010.04.014).
Abstract
CrAlN nanocomposite films with various Al contents were prepared by a reactive magnetron sputtering
technique using Cr and Al targets in the reactive gas mixture. The micro-structure, mechanical properties and
tribological behaviors of traditional CrN and newly-fabricated CrAlN nanocomposite films were compared.
XRD results showed that single-phase fcc (face-centered cubic) CrAlN films formed a solid solution whereby
Cr atoms were substituted by Al atoms. High resolution TEM results demonstrate that the CrAlN film
possesses a unique amorphous/crystalline nanocomposite micro-structure with ?5 nm crystalline uniformly
embedded into an amorphous matrix. In addition, CrAlN nanocomposite films exhibited relatively smaller
grain size and denser structure when compared with CrN films. All the CrAlN nanocomposite films with the
highest hardness being approximately 33.4 GPa exhibited much higher hardness and better wear resistance
than traditional CrN films The excellent anti-wear performance of CrAlN nanocomposite films can be
attributed to an amorphous/crystalline nanocomposite micro-structure and their high hardness. CrAlN
nanocomposite films are considered as potential protective surfaces for such kinds of moving parts as gears,
cutting tools and shafts used in engine and other mechanical mechanisms.
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Published date: 2010
Keywords:
CrAlN nanocomposite films, magnetron sputtering, micro-structure, mechanical properties, tribological performance
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Local EPrints ID: 155151
URI: http://eprints.soton.ac.uk/id/eprint/155151
ISSN: 0257-8972
PURE UUID: b98a349c-b363-4b67-b46a-ba62fd759785
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Date deposited: 02 Jun 2010 10:40
Last modified: 14 Mar 2024 02:37
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Author:
Liping Wang
Author:
Guangan Zhang
Author:
Q.J. Xue
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