Abstract
The effects of oxidizing treatment (OT) and nitriding-oxidizing treatment (NOT) on the corrosion resistance of Fe-21Cr-9Mn alloy in liquid zinc were investigated. The results reveal that they both can significantly improve the corrosion resistance owing to the presence of an unwettable oxide layer. By comparison, NOT alloy shows a longer incubation time in liquid zinc than OT alloy due to a more high-quality oxide. The corrosion of these two modified alloys both are controlled by dissolution mechanism and localized corrosion of the oxide.
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