Modification of zinc powder to improve the corrosion resistance of weldable primers
authors Bastos, AC; Zheludkevich, ML; Kluppel, I; Grundmeier, G; Ferreira, MGS
nationality International
author keywords Weldable primers; Coil-coatings; EIS; SVET; Corrosion; Zinc powder
keywords METALS
abstract This paper reports the modification of zinc powder to improve the corrosion resistance of weldable primers. These primers are thin zinc rich organic coatings applied by roll coating at the steel manufacturer. The automotive industry uses them to protect areas in the car body that become inaccessible after joining processes. In this work, with the objective of increasing the corrosion resistance of these systems, the zinc particles were chemically treated or simply replaced by powder of 55AlZn alloy. The rest of the formulation remained intact. The performance of the commercial and modified formulations was compared by SEM, SVET and EIS. The best results were obtained when the zinc powder was replaced by powder of the aluminium zinc alloy. (C) 2010 Elsevier B.V. All rights reserved.
issn 0300-9440
year published 2010
volume 69
issue 2
beginning page 184
ending page 192
digital object identifier (doi) 10.1016/j.porgcoat.2010.04.021
web of science category Chemistry, Applied; Materials Science, Coatings & Films
subject category Chemistry; Materials Science
unique article identifier WOS:000281937000011
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journal impact factor 4.469
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