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KMID : 1059520140580010009
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Journal of the Korean Chemical Society
2014 Volume.58 No. 1 p.9 ~ p.16
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Growth Kinetics and Electronic Properties of Passive Film of Nickel in Borate Buffer Solution
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Kim Youn-Kyoo
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Abstract
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In a borate buffer solution, the growth kinetics and the electronic properties of passive film on nickel were investigated, using the potentiodynamic method, chronoamperometry, and single- or multi-frequency electrochemical impedance spectroscopy. The oxide film formed during the passivation process of nickel has showed the electronic properties of p-type semiconductor, which follow from the Mott-Schottky equation. It was found out that the passive film (Ni(OH)2) of Ni formed in the low electrode potential changes to NiO and NiO(OH) while the electrode potential increases.
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KEYWORD
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Nickel, Corrosion, Passivation, p-Type semiconductor, Mott-Schottky
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