Oxidation-induced Cu coating on steel surface

Na Li, Ning Wang, Minghong Sha, Wei Sha, Junwei Zhang

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    Abstract

    Copper is accumulated in recycled steels and is difficult to be removed during steelmaking processes when steel scrap is used as steel sources. Meanwhile, copper characteristics are of importance both to human beings and to animals and plants. In this paper, integrated copper coating was observed on the surface of copper-containing steels when the steels were heated at around 1150°C. However, the copper was separately scattered in and under the surface rust after heating at 1000°C. The forming mechanisms of copper coating are discussed in detail. By choosing a proper descaling reagent, self-generated oxidation-induced copper coating appeared on the steel surface. The method proposed in this work is environmentally friendly for nontoxic chemicals being used. In addition, this provides a new concept for producing protective composite by oxidizing from the substrate directly and there is no bonding problem.
    Original languageEnglish
    Pages (from-to)71-75
    Number of pages5
    JournalMaterials Science Forum
    Volume817
    DOIs
    Publication statusPublished - Apr 2015

    Keywords

    • Copper-Bearing Steel
    • Cu Coating
    • Descaling
    • Oxidation-Induced

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