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.
机构:
Tsinghua Univ, Beijing Key Lab Fine Ceram, Inst Nucl & New Energy Technol, Zhongguancun St, Beijing 100084, Peoples R China
Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R ChinaTsinghua Univ, Beijing Key Lab Fine Ceram, Inst Nucl & New Energy Technol, Zhongguancun St, Beijing 100084, Peoples R China
Lv Jinlong
Liang Tongxiang
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Tsinghua Univ, Beijing Key Lab Fine Ceram, Inst Nucl & New Energy Technol, Zhongguancun St, Beijing 100084, Peoples R ChinaTsinghua Univ, Beijing Key Lab Fine Ceram, Inst Nucl & New Energy Technol, Zhongguancun St, Beijing 100084, Peoples R China
机构:
Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
Sun, Hua
Wu, Xinqiang
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Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
Wu, Xinqiang
Han, En-Hou
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Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China