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Abstract

Electrochemical impedance spectroscopy(EIS) technique was employed to study the corrosion behaviour of copper painted with the anion selective、 cation selective and bipolar phenolic coatings in 3% NaCl solution. From the impedance spectrum characteristics, the models of equivalent circuit for these different coating systems were established,and the methods for the analysis of experimental impedance diagrams in terms of coating and interface properties were discussed. The research results show that the composition and structure of ion selective coatings have significant influence on corrosion behaviour of copper. The bipolar coating consisting of an anion selective inner layer and a cation selective outer layer possesses excellent corrosion resistance.

Keywords

Ion selective phenolic coating

Publication Date

1997-08-28

Online Available Date

1997-08-28

Revised Date

1997-08-28

Received Date

1997-08-28

References

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