Comparative Research on Properties of Trivalent and Hexavalent Passive Film on Galvanized Steel

Xiao Fei Guo; Yue Wang; Hua Sun

doi:10.4028/www.scientific.net/AMR.396-398.1760

Paper Titles

Electrochemical Corrosion Characteristic of Structured Low Carbon Steel DC04 and Stainless Steel 304 Sheets in Sodium Chloride Solution
p.1736

A Study of Bright Sn Electroplating Technology in Methanesulfonic Acid System
p.1744

One-Step Synthesis of Asphalt Based Li₃V₂(PO₄)₃/C Nanocomposites as Cathode Materials for Lithium-Ion Batteries
p.1748

Preparation and Characterization of a Novel Gel Polymer Membrane Based on a Tetra-Copolymer
p.1755

Comparative Research on Properties of Trivalent and Hexavalent Passive Film on Galvanized Steel
p.1760

Investigation of Anticorrosive Trivalent-Chrome Coatings on 6063 Aluminum Alloy
p.1764

The Preparation of Sugarcane Bagasse Microcrystaline Cellulose in Subcritical Water/CO₂
p.1769

Electrochemical Synthesis of Ferrate Using Iron with 3.3% Si Anode
p.1773

Effects of Sulfate-Reducing Bacteria on the Corrosion of Q235
p.1777

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 396-398Comparative Research on Properties of Trivalent...

Comparative Research on Properties of Trivalent and Hexavalent Passive Film on Galvanized Steel

Abstract:

The anticorrosive performances of various kinds of conversion films including hexavalent and trivalent chromium passivation were studied on galvanized steel. The hexavalent and trivalent passivations showed similar protection tendency in the corrosion tests, but the hexavalent passivation had slightly better results than trivalent one. It was found the difference in the corrosion resistance given by the two films was attributed to the difference of their morphology and thickness by SEM test, for the hexavalent film was denser, smoother and thicker. Using EDS and XRD experiments, it was found that the hexavalent and trivalent passive films had the same chemical element but different components. Considering the environmental protection, the trivalent passivation will have better developing prospect in the near future.

You might also be interested in these eBooks

Advances in Chemical Engineering: ICCMME 2011

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 396-398)

Pages:

1760-1763

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.396-398.1760

Citation:

Cite this paper

Online since:

November 2011

Authors:

Xiao Fei Guo, Yue Wang, Hua Sun

Keywords:

Electrochemistry, Galvanized Steel, Passivation, SEM, X-Ray Diffraction (XRD)

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Basker Veeraraghavan, Dragan Slavkov, Swaminatha Prabhu, Marjorie Nicholson, Bala Haran, Branko Popov and Bob Heimann: Surface and Coatings Technology. Vol.167 (2003), p.41

DOI: 10.1016/s0257-8972(02)00880-0

Google Scholar

[2] Nazely Diban, Rosa Mediavilla, Ane Urtiaga and Inmaculada Ortiz: Journal of Hazardous Materials. Vol.192 (2011), p.801

Google Scholar

[3] M irghasem Hosseini, Habib Ashassi-Sorkhabi and Heshmat Allah Yaghobkhani Ghiasvand: Journal of Rare Earths. Vol.25 (2007), p.537

DOI: 10.1016/s1002-0721(07)60558-4

Google Scholar

[4] Shen P.H., Tu Zh. M.: zinc and zinc alloy electroplating (in Chinese), (China Machine Press, Beijing, 2001)

Google Scholar

[5] T. Bellezze, G. Roventi and R. Fratesi: Surface and Coationgs Technology. Vol.155 (2002), p.221

Google Scholar

[6] S.F.L. Mertens, E. Temmerman: Corrosion Science. Vol.43 (2001), p.301

Google Scholar