Abstract
AbstractIn the present work, strips of steel St‐37 were coated with Sn using the plasma‐spraying technique. Their corrosion behavior was examined with exposure in a salt spray chamber (SSC) at 40 °C and 100% relative humidity, while the corrosive medium was a 5 wt% NaCl aqueous solution. The exposure time of the samples ranged from 24 h up to 10 days. The as‐corroded samples were studied with optical microscopy, scanning electron microscopy (SEM) and X‐ray diffraction (XRD). Sn and Fe oxides and chlorides were detected on the coating surface along with the formation of large cavities. A possible mechanism of internal oxidation was used to explain these observations. Copyright © 2006 John Wiley & Sons, Ltd.
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