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Identification of segregation phase on a batch hot‐dip‐coated Zn/0.1Al/0.2Sb surface
Author(s) -
Wang Xinhua,
Lu Jintang,
Che Chunshan
Publication year - 2007
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.2593
Subject(s) - galvanization , antimony , coating , materials science , phase (matter) , dip coating , metastability , metallurgy , layer (electronics) , analytical chemistry (journal) , chemical engineering , chemistry , composite material , chromatography , organic chemistry , engineering
The segregation of antimony in a batch hot‐dipped regular‐spangle galvanized coating from a Zn‐0.1Al‐0.2Sb bath was investigated. The samples were characterized by using SEM/EDS. The nature of the segregation phase was determined by XRD as βSb 3 Zn 4 . Assisted with SbZn phase diagram, the behavior of antimony during the solidification process of the Zn‐0.1Al‐0.2Sb coating is examined. It is suggested that the coating solidification proceeds in three stages. Owing to the cooling rate of batch hot dip galvanizing process smaller than that of continuous hot dip galvanizing line (CGL), the resulting structure of the segregation phase in current work is βSb 3 Zn 4 instead of metastable ζSb 2 Zn 3 for CGL. Copyright © 2007 John Wiley & Sons, Ltd.