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Practical applications of phase diagrams in continuous galvanizing

  • Section I: Basic And Applied Research
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Abstract

Zn-Fe based high-order phase diagrams have found a wide range of applications in continuous galvanizing. With the development of computer software DEAL (DetermineEffectiveALuminum), the Zn-rich corner of the Zn-Fe-Al phase diagram is being used daily for scientific interpretation of bath assays. Computer software PAL (PredictAluminumLevel), also developed by Teck Cominco Metals Ltd., assesses transient equilibria between the steel substrate and the liquid galvanizing alloy for the estimation of Fe dissolution and Al consumption in galvanizing. Aluminum deportment in galvanizing baths has been scientifically described based on the fact that bath assays corresponding to different locations and depths of a galvanizing bath formed one tie-line in the liquid-Fe2Al5 two-phase field of the Zn-Fe-Al phase diagram. Zn-Fe based high-order phase diagrams also afford a better understanding of the mechanisms for a number of industrial phenomena. These practical applications of the Zn-Fe based phase diagrams are detailed in the article.

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Authors and Affiliations

  1. Teck Cominco Metals Ltd., Product Technology Centre, Mississauga, Ontario, Canada

    Nai-Yong Tang

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  1. Nai-Yong Tang
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Correspondence to Nai-Yong Tang.

Additional information

This article is based on a presentation made at the Galvanizers Association Ninety-Seventh Meeting held in Lexington, KY, from Oct 17 to 19, 2005.

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Tang, NY. Practical applications of phase diagrams in continuous galvanizing. JPED 27, 462–468 (2006). https://doi.org/10.1007/BF02736444

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  • DOI: https://doi.org/10.1007/BF02736444

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