INVESTIGATION OF AZ91 MAGNESIUM ALLOY OXIDATION KINETICS BY MEANS OF ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY

Journal article

Authors / Editors

Agachi, Paul

Research Areas

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Publication Details

Author list: Tasoti V, Nicoara A, Agachi PS

Publisher: UNIV ATHENS FIRST DEPT OBSTETR

Place: CLUJ-NAPOCA

Publication year: 2010

Journal acronym: STUD U BABES-BOL CHE

Volume number: 55

Issue number: 1

Start page: 5

End page: 13

Number of pages: 9

ISSN: 1224-7154

Languages: English-Great Britain (EN-GB)

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Abstract

A magnesium alloy oxidation in alkaline solutions was investigated by electrochemical impedance spectroscopy. Recorded impedance spectra exhibited up to two capacitive loops, suggesting oxidation trough adsorbed intermediates. For a kinetic description of reaction mechanism, equation of the parameters of Voight-type electrical equivalent model were obtained and used for magnesium alloy oxidation in open circuit conditions.

Keywords

electrochemical impedance spectroscopy, kinetic mechanism, magnesium alloy, Microarc oxidation

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