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Journal of Phase Equilibria and Diffusion

, Volume 27, Issue 5, pp 462–468 | Cite as

Practical applications of phase diagrams in continuous galvanizing

  • Nai-Yong Tang
Section I: Basic And Applied Research

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.

Keywords

invariant isothermal section practical applications ternary phase diagram Zn-Fe-Al system 

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Copyright information

© ASM International 2006

Authors and Affiliations

  1. 1.Teck Cominco Metals Ltd., Product Technology CentreMississaugaCanada

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