Noble metal coatings are commonly employed to improve corrosion resistance of metals in the electronic and jewellery industry. The corrosion resistance of electroplated goods is currently determinate with long, destructive and almost subjective interpretation corrosion tests in artificial atmosphere. In this study we present the application of electrochemical analysis to obtain fast and numerical information of the antiaging coating. We performed open circuit potential (OCP) and corrosion current measurement; we employed also the electrochemical impedance spectroscopy (EIS), commonly applied to organic or passivated metal with high-impedance, to find the best option for noble low-impedance coating analysis. For comparison, traditional standardized tests (damp heat ISO 17228, salt spray ISO 9227 and sulphur dioxide ISO 4524) were also performed.

Corrosion Resistance Test of Electroplated Gold and Palladium Using Fast Electrochemical Analysis / Walter Giurlani, Patrick Marcantelli, Francesco Benelli, Daniele Bottacci, Filippo Gambinossi, Maurizio Passaponti, Antonio De Luca, Emanuele Salvietti, Massimo Innocenti. - In: COATINGS. - ISSN 2079-6412. - ELETTRONICO. - (2019), pp. 1-10. [10.3390/coatings9060405]

Corrosion Resistance Test of Electroplated Gold and Palladium Using Fast Electrochemical Analysis

Walter Giurlani
;
Patrick Marcantelli;Filippo Gambinossi;Maurizio Passaponti;Antonio De Luca;Emanuele Salvietti;Massimo Innocenti
2019

Abstract

Noble metal coatings are commonly employed to improve corrosion resistance of metals in the electronic and jewellery industry. The corrosion resistance of electroplated goods is currently determinate with long, destructive and almost subjective interpretation corrosion tests in artificial atmosphere. In this study we present the application of electrochemical analysis to obtain fast and numerical information of the antiaging coating. We performed open circuit potential (OCP) and corrosion current measurement; we employed also the electrochemical impedance spectroscopy (EIS), commonly applied to organic or passivated metal with high-impedance, to find the best option for noble low-impedance coating analysis. For comparison, traditional standardized tests (damp heat ISO 17228, salt spray ISO 9227 and sulphur dioxide ISO 4524) were also performed.
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Walter Giurlani, Patrick Marcantelli, Francesco Benelli, Daniele Bottacci, Filippo Gambinossi, Maurizio Passaponti, Antonio De Luca, Emanuele Salvietti, Massimo Innocenti
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2158/1169955
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