Journal
TRIBOLOGY INTERNATIONAL
Volume 41, Issue 7, Pages 629-639Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2007.07.012
Keywords
abrasion-corrosion; synergy; tungsten carbide coating
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Funding
- Engineering and Physical Sciences Research Council [EP/F034296/1] Funding Source: researchfish
- EPSRC [EP/F034296/1] Funding Source: UKRI
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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. (c) 2007 Elsevier Ltd. All rights reserved.
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