Electrodeposition of tertiary alumina/yttria/carbon nanotube (Al2O3/Y2O3/CNT) nanocomposite by using pulsed current has been studied in this investigation. Coating process has been performed on nickel sulphate bath and nanostructure of obtained compound layer is examined with high precision figure analysis of SEM nanographs. The effects of process variables, i.e., Y2O3 concentration, treatment time, frequency and duty cycle, have been experimentally studied. Statistical methods are used to achieve the minimum of corrosion rate and average size of nanoparticles. Finally the contribution percentage of different effective factors is revealed and confirmation run shows the validity of obtained results. Also it has been revealed that by changing the size of nanoparticles, corrosion properties of coatings will change significantly in the same trend. AFM and TEM analyses have confirmed smooth surface and average size of nanoparticles in the optimal coating.
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Acknowledgement
The authors would like to express their thanks to the Iranian nanotechnology initiative for financial support to this project. The authors will also express their thanks to X. Li for TEM and AFM analysis.
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Published in Poroshkovaya Metallurgiya, Vol. 50, No. 3–4 (478), pp. 64–74, 2011.
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Mirzamohammadi, S., Kiarasi, R., Aliov, M.K. et al. Relation study of different properties for tertiary pulsed electrodeposited Ni-based nanocomposite with Al2O3/Y2O3/CNT nanopowders. Powder Metall Met Ceram 50, 173 (2011). https://doi.org/10.1007/s11106-011-9315-z
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DOI: https://doi.org/10.1007/s11106-011-9315-z