95. Galvanic Corrosion of Magnesium Alloy AZ91 with Coated Elements

  1. Prof. Dr. K. U. Kainer
  1. E. Boese1,
  2. J. Goellner1,
  3. A. Heyn1 and
  4. St. Eisenberg2

Published Online: 22 APR 2005

DOI: 10.1002/3527603565.ch95

Magnesium: Proceedings of the 6th International Conference Magnesium Alloys and Their Applications

Magnesium: Proceedings of the 6th International Conference Magnesium Alloys and Their Applications

How to Cite

Boese, E., Goellner, J., Heyn, A. and Eisenberg, St. (2003) Galvanic Corrosion of Magnesium Alloy AZ91 with Coated Elements, in Magnesium: Proceedings of the 6th International Conference Magnesium Alloys and Their Applications (ed K. U. Kainer), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527603565.ch95

Editor Information

  1. GKSS-Forschungszentrum, Institut für Werkstoffforschung, Max-Planck-Straße, 21502 Geesthacht, Germany

Author Information

  1. 1

    Otto-von-Guericke Universität, Magdeburg, Germany

  2. 2

    Volkswagen AG, Wolfsburg, Germany

Publication History

  1. Published Online: 22 APR 2005
  2. Published Print: 27 NOV 2003

ISBN Information

Print ISBN: 9783527309757

Online ISBN: 9783527603565

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Keywords:

  • galvanic corrosion;
  • magnesium alloy AZ91;
  • coated elements

Summary

In using magnesium alloys, special attention has to be paid to protection against galvanic corrosion which arises at various fastener locations required by design in automobile components [1, 2]. For example there were investigations to start serial production of the magnesium hatchback for the 3 l car [3]. General observations on galvanic corrosion are provided in ASTM G71 [4], DIN 50919 [5] and by Schwenk [6]. In order to assess the corrosion susceptibility of the less noble element in a material combination, it is necessary to know the characteristics of the partial polarization curves of both materials in the aggressive medium, not just the size of the potential difference between the two connected metals.