Metallurgy, Vol. 55 No. 1, 2016.
Review article
Reaction kinetics of the formation of intermetallic Fe – Zn during hot - dip galvanizing of steel
P. Pokorny
; Czech Technical University – Klokner Institute, Prague, Czech Republic
J. Kolisko
; Czech Technical University – Klokner Institute, Prague, Czech Republic
L. Balik
; Czech Technical University – Klokner Institute, Prague, Czech Republic
P. Novak
; Institute of Chemical Technology, Prague, Czech Republic
Abstract
This review article mainly describes the composition of intermetallic Fe - Zn, i.e. zeta (ζ), delta (δ1k + δ1p), gamma1 (Γ1) and gamma (Γ) on galvanized steel during low temperature galvanization (t ~ 450 °C). It gives detailed the formation, growth of individual phases during galvanization and their interaction. In terms of the kinetics, the formation of the coating is defined by a parabolic kinetic equation of the growth of different intermetallic phases under ideal conditions. From the available literature the rate constants of the formation of individual intermetallic phases and also for the total coating are cited. The composition of the intermetallic phases, iron content, crystal structure, and group symmetry in which the surface of galvanized steel forms.
Keywords
hot-dip galvanized steel; surface treatment; intermetallic Fe - Zn; reaction kinetics; temperature
Hrčak ID:
141849
URI
Publication date:
1.1.2016.
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