Corrosion Resistance and Paintability of Zinc and Zinc-Alloy Coatings for Automotive Sheet 840213
Electroplated and hot-dip-galvanized coatings have been widely used by the automobile industry for corrosion protection of unexposed surfaces against perforation. There is a growing interest in replacing these essentially pure zinc coatings with thinner, more corrosion resistant zinc-alloy coatings, and also in using the alloy coatings on exposed surfaces to achieve cosmetic-corrosion resistance and improved paint performance. This paper presents the results of various tests conducted to evaluate the performance of several Fe-Zn and Ni-Zn alloy coatings for these services. The coatings were evaluated in over-the-road corrosion tests and indoor “scab” corrosion tests, as well as conventional salt-spray tests.
Citation: Johnson, W. and Vrable, J., "Corrosion Resistance and Paintability of Zinc and Zinc-Alloy Coatings for Automotive Sheet," SAE Technical Paper 840213, 1984, https://doi.org/10.4271/840213. Download Citation
Author(s):
W.R. Johnson, J.B. Vrable
Affiliated:
U.S. Steel Technical Center, Monroeville, PA
Pages: 8
Event:
SAE International Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Coatings, colorants, and finishes
Corrosion
Test procedures
Drag
Alloys
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