Coating System for Magnesium Diecastings in Class A Surface Quality

  1. Prof. Dr.-Ing. K. U. Kainer
  1. R. Gadow1,
  2. F. J. Gammel2,
  3. F. Lehnert3,
  4. D. Scherer1 and
  5. J. I. Skar4

Published Online: 15 MAY 2006

DOI: 10.1002/3527607552.ch78

Magnesium Alloys and their Applications

Magnesium Alloys and their Applications

How to Cite

Gadow, R., Gammel, F. J., Lehnert, F., Scherer, D. and Skar, J. I. (2006) Coating System for Magnesium Diecastings in Class A Surface Quality, in Magnesium Alloys and their Applications (ed K. U. Kainer), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527607552.ch78

Editor Information

  1. GKSS-Forschungszentrum Geesthacht GmbH, Institut für Werkstofforschung, Max-Planck- Straße, D-21502 Geesthacht, Germany

Author Information

  1. 1

    University of Stuttgart, Institute for Manufacturing Technologies of Ceramic Components and Composites, Stuttgart, Germany

  2. 2

    DaimlerChrysler AG, München, Germany

  3. 3

    BMW Group, München, Germany

  4. 4

    Norsk Hydro ASA, Porsgrunn, Norway

Publication History

  1. Published Online: 15 MAY 2006
  2. Published Print: 20 SEP 2000

ISBN Information

Print ISBN: 9783527302826

Online ISBN: 9783527607556

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Keywords:

  • magnesium alloys;
  • corrosion;
  • coating system on magnesium diecastings

Summary

In this paper, recent developments of a novel coating system on magnesium diecastings are presented in which the classical filler is replaced by a silicone-modified organic coating. Silicone-modified organic resins show in addition to excellent corrosion inhibiting properties also an improved leveling behavior. Therefore the coverage of different surface defects originating from die casting is possible without or with only minimum posttreatment like sanding and grinding. The silicone-modified organic resin can be either applied on the primer (E-coat) or directly on the magnesium substrate after a suitable chemical pretreatment. Successively a conventional top coat is applied. Results showing the performance of the novel coating systems in salt spray testing and VDA cyclic testing are presented.