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Corrosion study of copper composite coating by impedance spectroscopy method
Author(s) -
Benea L.,
Mitoseriu O.,
Galland J.,
Wenger F.,
Ponthiaux P.
Publication year - 2000
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/1521-4176(200007)51:7<491::aid-maco491>3.0.co;2-c
Subject(s) - copper , corrosion , metallurgy , composite number , chemistry , materials science , coating , dielectric spectroscopy , copper plating , nuclear chemistry , electroplating , composite material , layer (electronics) , electrochemistry , electrode
This paper investigates the corrosion behaviour of copper and copper‐matrix composite coatings, with zirconium oxide particles embedded during electrodeposition from an acid copper sulphate plating bath. The corrosion studies were carried out on the basis of the polarisation resistance measurements by means of the impedance diagrams plotted in the complex plane, and Faradaic distortion method in the following aerated solution: 0.5M sulphuric acid. The results are discussed by taking into account the possible influence of disperse phase in the mechanism of electrodeposited copper corrosion. The zirconium oxide particles embedded in the electroplated copper increase the polarisation resistance and decrease the corrosion rates with three times in sulphuric acid as compared with electrodeposited pure copper.