Abstract
The coatings produced with high-velocity oxygen fuel spraying technology can greatly improve wear and corrosionresistance. In this study, WC-12% Ni coating was applied on the lamellar graphite cast iron substrate. Morphologies andstructures of uncoated samples and sprayed coatings were analyzed with light microscopy, scanning electron microscope,energy dispersive spectrometry and X-ray diffraction. Although their micro-hardness, porosity, abrasion and corrosionproperties were studied, wear experiments were performed at normal atmospheric conditions (under room temperature and30% humidity) in the reciprocating wear testing machine. The corrosion resistance of the coatings was measured usingpotentio-dynamic polarization. The results revealed that the microstructure was porous, had micro-cracks, and containedsome inhomogeneous structures such as carbide. Energy dispersive spectrometry analysis revealed that the presence ofphases indicated the success in coating process. It was found that the WC-12% Ni coating exhibited lower potential andlower corrosion current density compared to those of the uncoated sample.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Indian Journal of Engineering and Materials Sciences
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
