Paper Title:
Evaluation on the Corrosion Resistance Improvement by Dipping to Inhibitor Solution of Galvanizing Steel
  Abstract

Galvanizing method is being widely used to the numerous constructional steels such as a guard rail of high way, various types of structural steel for manufacturing ship and for some other fields etc.. However, galvanized structures inevitably may be corroded rapidly with increasing exposed time because the rate of environmental contamination is accelerating due to the rapid development of industrial society. Therefore, it is necessary to improve the corrosion resistance of the galvanizing film through various methods such as variation of chemical composition of galvanizing bath, chromate treatment and coating treatment etc.. In this study, three types of the test specimens, that is, pure galvanizing, galvalume and chromate treated steels were immersed at inhibitor solution. And the effect of inhibitor for their corrosion resistance improvement was comparatively investigated with an electrochemical method. Corrosion current density of the original galvanizing and galvalume steel exhibited the highest and lowest value respectively in seawater. However, the corrosion resistance of these samples was considerably improved by dipped to a inhibitor solution(H3PO4+ Zn(NO3)2+Q). In particular, the galvanizing steel which dipped to the inhibitor solution exhibited the lowest corrosion current density due to the best effect of corrosion resistance improvement compared to other test specimens.

  Info
Periodical
Chapter
Chapter 7: Functional Materials
Edited by
Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen
Pages
1365-1369
DOI
10.4028/www.scientific.net/AMM.117-119.1365
Citation
K. M. Moon, M. H. Lee, "Evaluation on the Corrosion Resistance Improvement by Dipping to Inhibitor Solution of Galvanizing Steel", Applied Mechanics and Materials, Vols. 117-119, pp. 1365-1369, 2012
Online since
October 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Wan Qiu Zhou, Da Yong Shan, En Hou Han, Wei Ke
Abstract:A phosphate conversion coating was deposited on diecast AZ91D magnesium alloys, the film was a complex phosphate containing Mg and Al,which...
819
Authors: Li Qun Bai, Di Li, Bao Lan Guo, Min Guo
Abstract:The different chrome-free chemical conversion coatings were prepared on AZ91D magnesium alloy and SEM was used to observe the surface. The...
473
Authors: Li Qun Bai, Di Li, Min Guo, Jing Xin
Abstract:Rare earth chemical conversion coating of Mg alloys was studied. Corrosion and electrochemical behavior in chloride environment were...
555
Authors: Qi Pan, Lin Wu, De Lian Yi, Zhao Hui, Ou Yang, Dan Li, Xiang Nan Meng, De Ju Wang
Chapter 6: Surface Engineering/Coatings
Abstract:The corrosion resistance of chromium-free passivation film with single chromate-free passivation solution to deal with galvanized steel still...
881