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Corrosion and Passivation of Nickel Rotating Disk Electrode in Borate Buffer Solution
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 Title & Authors
Corrosion and Passivation of Nickel Rotating Disk Electrode in Borate Buffer Solution
Kim, Younkyoo;
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 Abstract
The electrochemical corrosion and passivation of Ni rotating disk electrod in borate buffer solution was studied with potentiodynamic and electrochemical impedance spectroscopy. The mechanisms of both the active dissolution and passivation of nickel and the hydrogen evolution in reduction reaction were hypothetically established while utilizing the Tafel slope, impedance data, the rotation speed of Ni-RDE and the pH dependence of corrosion potential and current. Based on the EIS data, an equivalent circuit was suggested. In addition, carefully measured were the electrochemical parameters for specific anodic dissolution regions. It can be concluded from the data collected that the oxide film, which is primarily formed by passivation, is converted to NiO by dehydration under the influence of an electrical field.
 Keywords
Nickel rotating disk electrode;Corrosion;Passivation;Electrochemical impedance spectroscopy;Borate buffer solution;
 Language
Korean
 Cited by
1.
Borate 완충용액에서 니켈 산화피막의 생성 과정과 전기적 성질,김연규;

대한화학회지, 2014. vol.58. 1, pp.9-16 crossref(new window)
2.
염산과 황산 용액에서 니켈의 부식에 미치는 아미노산의 부식억제효과,김연규;

대한화학회지, 2015. vol.59. 2, pp.125-131 crossref(new window)
1.
Growth Kinetics and Electronic Properties of Passive Film of Nickel in Borate Buffer Solution, Journal of the Korean Chemical Society, 2014, 58, 1, 9  crossref(new windwow)
2.
Inhibition Effects of Some Amino Acids on the Corrosion of Nickel in Hydrochloric Acid and Sulfuric Acid, Journal of the Korean Chemical Society, 2015, 59, 2, 125  crossref(new windwow)
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