A Study of Double-Coating of Hot-Dip Aluminizing

Chen Gang Hao; Han Qing Liang; Jian Min Zeng; Jun Chen; Ping Chen; Jian Qiang Xiao

doi:10.4028/www.scientific.net/AMM.217-219.1221

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 217-219A Study of Double-Coating of Hot-Dip Aluminizing

A Study of Double-Coating of Hot-Dip Aluminizing

Abstract:

Double-coating of hot-dip aluminizing is a process of protecting steel from being oxidized. The process is featured that the component is firstly hot-dip galvanized and finally hot-dipped with aluminum. The comparison of interface morphology was conducted for single hot-dip aluminizing and double-coating of hot-dip aluminizing on Q235 steel sheets. The metallographies of the cross-sections were observed and analyzed with SEM, XRD and EDS, respectively for the specimens prepared by the two processes. The experimental results indicate that there is no Zn-Fe alloy layer formed in the double-coating, and both single and double coating have similar phase compositions. However, the interface between the alloy layer and the steel matrix is smoother for the double-coating than that for single-coating.

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Periodical:

Applied Mechanics and Materials (Volumes 217-219)

Pages:

1221-1224

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.217-219.1221

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Online since:

November 2012

Authors:

Chen Gang Hao, Han Qing Liang, Jian Min Zeng, Jun Chen, Ping Chen, Jian Qiang Xiao

Keywords:

Double-Coating, Hot-Dip Aluminizing, Water Solvent Auxiliary

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