Title: Fabrication and wear resistance of Ni-CeO₂ nanocomposite coatings by electrodeposition under ultrasound condition

Authors: Yu-Jun Xue, Ji-Shun Li, Wei Ma, Ming-De Duan, Ming-Ming Lan

Addresses: School of Electromechanical Engineering, Henan University of Science and Technology, Luoyang 471003, PR China. ' Henan Key Laboratory of Mechanical Design and Transmission System, Luoyang 471003, PR China. ' School of Electromechanical Engineering, Henan University of Science and Technology, Luoyang 471003, PR China. ' School of Electromechanical Engineering, Henan University of Science and Technology, Luoyang 471003, PR China. ' School of Electromechanical Engineering, Henan University of Science and Technology, Luoyang 471003, PR China

Abstract: Ni-CeO₂ nanocomposite coatings were fabricated by electrodeposition from a modified Watt|s type electrolyte containing CeO₂ nanoparticles with an average particle size of 30 nm, where an ultrasonic field was imposed during electrodeposition process. The surface morphologies, crystal structure, vickers hardness and wear resistance of the coatings were examined. It was found that the Ni-CeO₂ nanocomposite coating fabricated with ultrasound exhibited finer grains and more compact structure compared to the pure Ni coating and also the Ni-CeO₂ nanocomposite coating fabricated without ultrasound. The crystal orientation of Ni-CeO₂ nanocomposite coatings greatly changed in the presence of ultrasound. Furthermore, the imposition of ultrasound gave rise to increased hardness and wear resistance of the Ni-CeO₂ nanocomposite coating.

Keywords: Ni-CeO2; nanoparticles; nanocomposite coating; electrodeposition; ultrasound; microhardness; wear resistance; surface engineering; crystal orientation; nanocomposites; nanomaterials; nanotechnology; cerium oxide; nickel; surface morphology; crystal structure; vickers hardness.

DOI: 10.1504/IJSURFSE.2010.033248

International Journal of Surface Science and Engineering, 2010 Vol.4 No.3, pp.202 - 213

Published online: 14 May 2010 *

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