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Development of Zn-SiC composite coatings: Electrochemical corrosion studies
Author(s) -
Mohan Kumar,
T. V. Venkatesha,
M. K. Pavithra
Publication year - 2015
Publication title -
journal of electrochemical science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.236
H-Index - 6
ISSN - 1847-9286
DOI - 10.5599/jese.2015.0073
Subject(s) - materials science , dielectric spectroscopy , corrosion , composite number , zinc , microstructure , scanning electron microscope , coating , electrochemistry , plating (geology) , polarization (electrochemistry) , metallurgy , chemical engineering , composite material , electrode , chemistry , geophysics , engineering , geology

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 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.

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