Comparative corrosion behaviour of 55aluminium-Zinc alloy and Zinc hot-dipcoatings deposited on low carbon steel substrates

Authors
Sere, PR Zapponi, M Elsner, CI Di Sarli, AR
Citation
Pr. Sere et al., Comparative corrosion behaviour of 55aluminium-Zinc alloy and Zinc hot-dipcoatings deposited on low carbon steel substrates, CORROS SCI, 40(10), 1998, pp. 1711-1723
Citations number
15
Categorie Soggetti
Material Science & Engineering
Journal title
CORROSION SCIENCE
ISSN journal
0010938X → ACNP
Volume
40
Issue
10
Year of publication
1998
Pages
1711 - 1723
Database
ISI
SICI code
0010-938X(199810)40:10<1711:CCBO5A>2.0.ZU;2-G
Abstract
A comparative study of the anticorrosive behaviour of 55Aluminium-Zinc-allo y and Zinc coatings, both applied by the hot-dip process to steel, was perf ormed using salt spray and humidity cabinet tests as well as immersion ones . Surface degradation of the coated steel was studied by SEM and EDS, whils t the corrosion products were characterised using XRD. The experimental res ults showed that the corrosion resistance of the 55Al-Zn alloy coating was higher than that of Zn alone particularly in presence of chloride ions. The morphological characteristics of the corrosion products formed also differ ed. (C) 1998 Elsevier Science Ltd. All rights reserved.