Exposure effects of strong alkaline conditions on the microscale abrasion–corrosion of D-gun sprayed WC–10Co–4Cr coating
Exposure effects of strong alkaline conditions on the microscale abrasion–corrosion of D-gun sprayed WC–10Co–4Cr coating
The synergistic effects between abrasion and corrosion for detonation gun (D-gun) sprayed WC–10Co–4Cr coatings have been studied for alkaline conditions. Comparisons between exposed and freshly polished coating surfaces in strong NaOH solutions (pH 11) show that significantly lower wear rates were seen for the exposed surface due to a negative wear–corrosion synergy. The negative synergy was seen to increase with increasing sliding distances for both fresh and exposed surfaces. The physical mechanisms of this negative synergy are discussed. The effect of anodic surface treatments on wear–corrosion to elucidate the influence of corrosion on the negative synergy is also reported.
abrasion–corrosion, synergy, tungsten carbide coating
629-639
Thakare, M.R.
e667c6c9-8311-4340-ac63-f1d5ed539c2c
Wharton, J.A.
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Menger, C.
f772d202-2c68-4a5f-b76d-82307f2d7d74
July 2008
Thakare, M.R.
e667c6c9-8311-4340-ac63-f1d5ed539c2c
Wharton, J.A.
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Menger, C.
f772d202-2c68-4a5f-b76d-82307f2d7d74
Thakare, M.R., Wharton, J.A., Wood, R.J.K. and Menger, C.
(2008)
Exposure effects of strong alkaline conditions on the microscale abrasion–corrosion of D-gun sprayed WC–10Co–4Cr coating.
Tribology International, 41 (7), .
(doi:10.1016/j.triboint.2007.07.012).
Abstract
The synergistic effects between abrasion and corrosion for detonation gun (D-gun) sprayed WC–10Co–4Cr coatings have been studied for alkaline conditions. Comparisons between exposed and freshly polished coating surfaces in strong NaOH solutions (pH 11) show that significantly lower wear rates were seen for the exposed surface due to a negative wear–corrosion synergy. The negative synergy was seen to increase with increasing sliding distances for both fresh and exposed surfaces. The physical mechanisms of this negative synergy are discussed. The effect of anodic surface treatments on wear–corrosion to elucidate the influence of corrosion on the negative synergy is also reported.
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Published date: July 2008
Keywords:
abrasion–corrosion, synergy, tungsten carbide coating
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Local EPrints ID: 153547
URI: http://eprints.soton.ac.uk/id/eprint/153547
ISSN: 0301-679X
PURE UUID: 5430ac85-199f-4aea-95a8-04c444ab527a
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Date deposited: 20 May 2010 10:13
Last modified: 14 Mar 2024 02:41
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Author:
M.R. Thakare
Author:
C. Menger
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