Studies on electrodeposited nickel–yttria doped ceria composite coatings

Aruna, ST and William Grips, VK and Selvan, Ezhil V and Rajam, KS (2007) Studies on electrodeposited nickel–yttria doped ceria composite coatings. J Appl Electrochem, 37 . pp. 991-1000. ISSN 1572-8838

Full text available as:
[img] PDF - Published Version
Download (906Kb)

    Abstract

    Incorporation of ceria particles into the Ni matrix was found to improve the corrosion resistance of pure Ni coatings. With the aim of further improving the corrosion resistance of Ni-ceria, yttria was doped with ceria and used as distributed phase. About 8-mol% yttria doped ceria (8YDC) particles synthesized by a solution combustion process were dispersed in a nickel sulfamate bath and electrodeposition was carried out to prepare Ni–8YDC composite coatings at various current densities. The microhardness of the composite coatings was determined. Optical microscopy confirmed the incorporation of 8YDC particles into the Ni matrix. Potentiodynamic polarization and electrochemical impedance spectroscopy were used to characterize the corrosion behavior of the Ni–8YDC coatings. Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Analysis (EDAX) were used to characterize the corroded samples. The results were compared with those for Ni and Ni–CeO2 coatings. The wear behavior of Ni–8YDC was studied. Wear tracks were characterized by MicroRaman Spectroscopy

    Item Type: Journal Article
    Additional Information: Copyright belongs to Springer
    Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
    Division/Department: Surface Engineering Division, Surface Engineering Division, Other, Surface Engineering Division
    Depositing User: Dr Aruna /ST S.T. Aruna
    Date Deposited: 09 Jul 2010 10:22
    Last Modified: 09 Jul 2010 10:22
    URI: http://nal-ir.nal.res.in/id/eprint/8566

    Actions (login required)

    View Item