Corrosion and wear analysis of HVOLF sprayed WC-10CO-4Cr coating on geothermal turbine blade
ISSN: 1708-5284
Article publication date: 18 November 2019
Issue publication date: 20 November 2019
Abstract
Purpose
The purpose of this paper is to develop the high pressure high-velocity oxy-liquid fuel sprayed WC-10Co-4Cr coatings on geothermal turbine 9Cr-1Mo steel for protection against wear and corrosion.
Design/methodology/approach
The microstructural characterization of as-deposited and corroded coating was done and presented using X-ray diffraction and scanning electron microscope/energy dispersive spectroscopy analysis.
Findings
The developed coating offered 50 per cent enhanced microhardness (1,200 HV) and 100 per cent enhanced wear resistance, in comparison to bare geothermal turbine steel, respectively. The coating has shown enhanced life in the simulated working conditions (fog test and dip test). This may be because of the high microhardness of the developed coating as per the proven tribological theories.
Originality/value
Coating offered excellent corrosion resistance in the harsher simulated environments to geothermal turbines.
Keywords
Citation
Kumar, M. and Upadhyaya, R. (2019), "Corrosion and wear analysis of HVOLF sprayed WC-10CO-4Cr coating on geothermal turbine blade", World Journal of Engineering, Vol. 16 No. 6, pp. 768-774. https://doi.org/10.1108/WJE-03-2019-0089
Publisher
:Emerald Publishing Limited
Copyright © 2019, Emerald Publishing Limited