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Growth Kinetics and Electronic Properties of Passive Film of Nickel in Borate Buffer Solution

Borate 완충용액에서 니켈 산화피막의 생성 과정과 전기적 성질

  • Received : 2013.09.11
  • Accepted : 2013.12.02
  • Published : 2014.02.20

Abstract

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.

Keywords

Nickel;Corrosion;Passivation;p-Type semiconductor;Mott-Schottky

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