Development of Zn-SiC composite coatings: Electrochemical corrosion studies

Mudigere Krishnegowda Punith Kumar, Thimmappa Venkatarangaiah Venkatesha, Mudigere Krishnegowda Pavithra
2015 Journal of Electrochemical Science and Engineering  
The Zn-SiC composite coatings were fabricated by using sulphate plating bath dispersed with 1, 2 and 3 g L -1 of 64.28 nm SiC nanoparticles. Appreciable influence on morphology and microstructure was observed in scanning electron microscopy, X-ray diffraction spectroscopy and texture co-efficient calculations for SiC incorporated zinc coatings. The electrochemical corrosion behavior of zinc and Zn-SiC composite coatings was studied by potentiodynamic polarization and electrochemical impedance
more » ... hemical impedance analysis. Significant reduction in corrosion current and corrosion rate with increased charge transfer resistance was noticed for composite coatings. The SiC incorporated zinc coatings shown improved micro-hardness property to pure zinc coating. The properties of Zn-SiC composite coatings were compared with that of pure zinc coating.
doi:10.5599/jese.2015.0073 fatcat:6popzdjtpfbbnlhw2kzfrtjr3i