Publication detail

Comparison of Electrochemical Methods for the Evaluation of Cast AZ91 Magnesium Alloy

TKACZ, J. MINDA, J. FINTOVÁ, S. WASSERBAUER, J.

Original Title

Comparison of Electrochemical Methods for the Evaluation of Cast AZ91 Magnesium Alloy

English Title

Comparison of Electrochemical Methods for the Evaluation of Cast AZ91 Magnesium Alloy

Type

journal article in Web of Science

Language

en

Original Abstract

Linear polarization is a potentiodynamic method used for electrochemical characterization of materials. Obtained values of corrosion potential and corrosion current density offer information about material behavior in corrosion environments from the thermodynamic and kinetic points of view, respectively. The present study offers a comparison of applications of the linear polarization method (from −100 mV to +200 mV vs. EOCP), the cathodic polarization of the specimen (−100 mV vs. EOCP), and the anodic polarization of the specimen (+100 mV vs. EOCP), and a discussion of the differences in the obtained values of the electrochemical characteristics of cast AZ91 magnesium alloy. The corrosion current density obtained by cathodic polarization was similar to the corrosion current density obtained by linear polarization, while a lower value was obtained by anodic polarization. Signs of corrosion attack were observed only in the case of linear polarization including cathodic and anodic polarization of the specimen.

English abstract

Linear polarization is a potentiodynamic method used for electrochemical characterization of materials. Obtained values of corrosion potential and corrosion current density offer information about material behavior in corrosion environments from the thermodynamic and kinetic points of view, respectively. The present study offers a comparison of applications of the linear polarization method (from −100 mV to +200 mV vs. EOCP), the cathodic polarization of the specimen (−100 mV vs. EOCP), and the anodic polarization of the specimen (+100 mV vs. EOCP), and a discussion of the differences in the obtained values of the electrochemical characteristics of cast AZ91 magnesium alloy. The corrosion current density obtained by cathodic polarization was similar to the corrosion current density obtained by linear polarization, while a lower value was obtained by anodic polarization. Signs of corrosion attack were observed only in the case of linear polarization including cathodic and anodic polarization of the specimen.

Keywords

AZ91 magnesium alloy; cathodic polarization curve; anodic polarization curve; linear polarization curve

Released

15.11.2016

Publisher

MDPI AG

Location

Switzerland

Pages from

1

Pages to

14

Pages count

14

URL

Full text in the Digital Library

BibTex


@article{BUT129850,
  author="Jakub {Tkacz} and Jozef {Minda} and Stanislava {Fintová} and Jaromír {Wasserbauer}",
  title="Comparison of Electrochemical Methods for the Evaluation of Cast AZ91 Magnesium Alloy",
  annote="Linear polarization is a potentiodynamic method used for electrochemical characterization of materials. Obtained values of corrosion potential and corrosion current density offer information about material behavior in corrosion environments from the thermodynamic and kinetic points of view, respectively. The present study offers a comparison of applications of the linear polarization method (from −100 mV to +200 mV vs. EOCP), the cathodic polarization of the specimen (−100 mV vs. EOCP), and the anodic polarization of the specimen (+100 mV vs. EOCP), and a discussion of the differences in the obtained values of the electrochemical characteristics of cast AZ91 magnesium alloy. The corrosion current density obtained by cathodic polarization was similar to the corrosion current density obtained by linear polarization, while a lower value was obtained by anodic polarization. Signs of corrosion attack were observed only in the case of linear polarization including cathodic and anodic polarization of the specimen.",
  address="MDPI AG",
  chapter="129850",
  doi="10.3390/ma9110925",
  howpublished="print",
  institution="MDPI AG",
  number="9",
  volume="11",
  year="2016",
  month="november",
  pages="1--14",
  publisher="MDPI AG",
  type="journal article in Web of Science"
}