Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1470185 | Corrosion Science | 2010 | 10 Pages |
Abstract
Zn–4.8 wt% Al coated steels exhibited a polynomial increase in Zn loss from the cut edge with increasing steel gauge for weight loss and SVET Zn loss in 0.1% NaCl in contrast to a linear increase observed for hot dipped galvanised (HDG) steels. Increasing steel gauge decreased nucleation and increased growth of Zn dendrites for Zn–4.8 wt% Al coated steels. SVET data showed larger Zn dendrites associated with thicker gauges produced more damaging anodes than small dendrites on thinner samples. A polynomial relationship was observed between dendrite size and Zn loss suggesting that microstructure influenced Zn loss in unison with the increased cathodic activity on thicker steels.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
James Sullivan, Chris Weirman, Jon Kennedy, David Penney,