New protective coatings against liquid zinc corrosion

被引：0
|
作者：
Aleksandra Cieplak
Asma Gdoura
Bruno Gay
Léo Portebois
Nicolas Ramenatte
Ingrid Proriol Serre
David Balloy
机构：
[1] Univ. Lille,National Institute of Applied Sciences and Technology (INSAT)
[2] CNRS,EEIGM
[3] INRAE,undefined
[4] Centrale Lille,undefined
[5] UMR 8207 - UMET - Unité Matériaux et Transformations,undefined
[6] Carthage University,undefined
[7] B.Circle,undefined
[8] Université de Lorraine,undefined
来源：
SN Applied Sciences | 2023年 / 5卷
关键词：
Batch galvanizing; Molten zinc corrosion; Slurry process;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Hot dip galvanizing is a surface treatment used to form a corrosion-resistant layer on the surface of steel by dipping it in a liquid zinc bath. However, a lot of structures used for hanging or containing the parts during the process are made of steel and suffer from liquid zinc corrosion. Furthermore, Fe–Zn intermetallics formed on the surface induce an additional pickling and zinc consummation, therefore generating supplementary economic and environmental costs. In this article, two Fe-Cr-Ni-Si coatings synthetized by the slurry process on carbon steel (C22) were characterized by XRD, EDX, EPMA and EBSD analyses. Their corrosion protective properties were studied in the process imitating cyclic batch galvanizing and compared to those of uncoated carbon steel (C22) and stainless steel (316 L). The coatings were verified to be more efficient than the 316 L steel usually used for this application. After 9 cycles of no weight loss, molten zinc corrosion was linear and the same for Fe-Cr-Ni-Si coatings as for the stainless steel.
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