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Photoelectrochemical Study of Corrosion Resisting Property of Cupronickel B10 in Simulated Cooling Water
Author(s) -
XU Qunjie,
WAN Zongyue,
ZHOU Guoding,
YIN Renhe,
CAO Weimin,
LIN Changjian
Publication year - 2009
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200990041
Subject(s) - corrosion , dielectric spectroscopy , chemistry , photocurrent , borax , electrode , cyclic voltammetry , electrochemistry , layer (electronics) , inorganic chemistry , materials science , optoelectronics , organic chemistry , raw material
Abstract The corrosion behavior for cupronickel B10 electrode in simulated cooling water has been studied by using cyclic voltammetry, a photocurrent response method and electrochemical impedance spectroscopy (EIS). The cupronickel electrode shows a p‐type photoresponse to positive and negative potential scan, which comes from Cu 2 O layer on its surface, but its i ph,max is less than that in borax buffer solution. The corrosion resisting property of the cupronickel B10 electrode appeared worse with the increase in the concentrations of Cl − , SO 4 2− and S 2− ions, as well as with increasing pH. The rise in the temperature may result in a photoresponse changes from p‐type to n‐type, and the corrosion resisting property fell simultaneously. The results of the EIS measurement agree well with those obtained by a photoelectrochemical method.