Journal of Materials Science

, Volume 43, Issue 21, pp 6872–6880 | Cite as

The Fe–Zn–Al–Cr system and its impact on the galvanizing process in chromium-added zinc baths

  • Richard Fourmentin
  • Marie-Noëlle Avettand-Fènoël
  • Guy Reumont
  • Pierre Perrot
Article

Abstract

The zinc rich corner of the Fe–Zn–Al–Cr at 460 °C is of interest for galvanizing because Al is a usual addition element in zinc bath, whereas Cr is naturally present because it is supplied by the stainless steel roller dipping in the Zn bath during the process. Indeed, it is used to understand the formation and growth mechanisms of the solid phases during galvanizing in Al and Cr-added Zn bath. By using additional experimental results in the Al–Cr–Zn and Fe–Zn–Al–Cr systems, the zinc rich corner of the Fe–Zn–Al–Cr system at 460 °C was determined with more accuracy. Thus, new equilibria between the liquid and quaternary phases have been pointed out, namely Al2Cr3 stabilized by Zn and enriched with Fe and τ1, the latter being isotypic with δ-FeZn9. This quaternary system was assessed with the CALPHAD method using the PARROT module of the Thermo-Calc Software. The liquid and solid solutions are described by the Redlich-Kister-Muggianu equations. All the modeled phases are considered as stoichiometric in the binary systems.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Richard Fourmentin
    • 1
  • Marie-Noëlle Avettand-Fènoël
    • 1
  • Guy Reumont
    • 1
  • Pierre Perrot
    • 1
  1. 1.Laboratoire de Metallurgie Physique et Genie des Materiaux, UMR CNRS 8517Université de Lille IVilleneuve d’Ascq CedexFrance

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