文档介绍：Electrochimica Acta 56 (2011) 1662–1669
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Electrochimica Acta
journal homepage: ate/electacta
Effects of solution temperature on the ic nature of passive film on Ni
KyungJin Park a, SeJin Ahn b, HyukSang Kwon a,∗
a Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea
b Photovoltaic Research Group, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea
article info abstract
Article history: Effects of solution temperature on the ic nature of passive film on Ni were investigated using polar-
Received 9 April 2010 ization test, Mott–Schottky analysis and electrochemical impedance spectroscopy to reveal why the
Received in revised form corrosion resistance of Ni is degraded with an increase in solution temperature. The increase in the
24 September 2010
corrosion rate of Ni with solution temperature was confirmed by the increase in the passive current den-
Accepted 24 September 2010
sity and also in the steady-state current density. Mott–Schottky analysis revealed that the passive film
Available online 31 October 2010
formed on Ni exhibits a p-type semiconducting characteristics irrespective of the solution temperature,
and the concentration of cation vacancy in th