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Corrosion and wear behaviour of HVOF spraying WC-12% Ni coating on gray cast-iron

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Title Statement Corrosion and wear behaviour of HVOF spraying WC-12% Ni coating on gray cast-iron
 
Added Entry - Uncontrolled Name Güney, Bekir ; Karamanoglu Mehmetbey University, Vocational School of Technical Sciences, Yunus Emre Campus, Karaman 702 00, Turkey
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Uncontrolled Index Term Metallurgy and Materials engineering
Thermal spray coating, HVOF coating, Corrosion behaviour, Wear, Microstructure 
 
Summary, etc. <p>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.</p>
 
Publication, Distribution, Etc. Indian Journal of Engineering and Materials Sciences (IJEMS)
2021-06-16 15:02:51
 
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http://op.niscair.res.in/index.php/IJEMS/article/view/34970
 
Data Source Entry Indian Journal of Engineering and Materials Sciences (IJEMS); ##issue.vol## 28, ##issue.no## 1 (2021): IJEMS- February 2021
 
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