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Surface Engineering Volume 28, 2012 - Issue 1
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Original Article

Plasma and HVOF sprayed WC–Co coatings as hard chrome replacement solution

S Hazra Department of Mechanical EngineeringIIT Kharagpur, Kharagpur721302, India
,
K Sabiruddin Department of Mechanical EngineeringIIT Kharagpur, Kharagpur721302, India
&
P P Bandyopadhyay Department of Mechanical EngineeringIIT Kharagpur, Kharagpur721302, IndiaCorrespondence[email protected]
Pages 37-43 | Received 14 Jul 2010, Accepted 27 Oct 2010, Published online: 12 Nov 2013
 
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Abstract

In the present study, WC–12Co coating has been deposited using plasma spray and high velocity oxyfuel spraying (HVOF) and wear performances of these coatings have been compared with electroplated hard chrome. Bearing steel and WC–Co balls have been used as rubbing counterparts. The wear is predominantly adhesive for the atmospheric plasma spray (APS) and the electroplated coating. For HVOF coating, wear has been found to occur by localised microfracture. A careful choice of plasma spray parameters yields a coating more wear resistant than the electroplated hard chrome. However, the HVOF coating has always offered the highest wear resistance.

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Related Research Data

Microstructural characterisation and microhardness distribution of HVOF sprayed WC–10Co–4Cr coating
Source: Informa UK Limited
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Effect of Grinding on the Residual Stress and Adhesion Strength of HVOF Thermally Sprayed WC–10Co–4Cr Coating
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Dry Sliding Wear Properties of HVOF Sprayed WC–10Co–4Cr Coating
Source: Springer Science and Business Media LLC
Fe based (W,Ti)C EAS and WC-12Co HVOF sprayed coatings: microstructure, mechanical properties and micro-scale abrasion performance
Source: IOP Publishing
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Nanocrystalline Cermet Coatings for Erosion–Corrosion Protection
Source: MDPI AG
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