Characterisation of Corrosion products formed on copper exposed at indoor and outdoor sites with high H2S concentrations

M. Watanabe, M. Takaya, T. Handa, J. Sakai

    研究成果: Article査読

    2 被引用数 (Scopus)

    抄録

    Corrosion products formed on copper exposed indoors and outdoors at sites with high hydrogen sulphide (H2S) concentrations were characterised using several analytical techniques. The crystalline corrosion products that formed on the copper exposed indoors were chalcocite (Cu2S) and cuprite (Cu2O), while those that formed on the copper exposed outdoors were chalcocite, cuprite and basic copper sulphates. Surface analysis by X-ray photoelectron spectroscopy revealed differences between the copper exposed indoors and outdoors that are explained by the composition, localisation and oxidation of the corrosion products. The surface morphologies of the corrosion products also differed. Elemental depth profiling by glow discharge optical emission spectroscopy revealed that the corrosion products that formed indoors were mainly chalcocite with cuprite only at and near the surface. In contrast, the corrosion products that formed outdoors were a mixture of chalcocite and cuprite. These differences in corrosion products are attributed to the differences in relative humidity during exposure.

    本文言語English
    ページ(範囲)418-425
    ページ数8
    ジャーナルCorrosion Engineering Science and Technology
    48
    6
    DOI
    出版ステータスPublished - 2013 9

    ASJC Scopus subject areas

    • Materials Science(all)
    • Chemical Engineering(all)
    • Chemistry(all)

    フィンガープリント 「Characterisation of Corrosion products formed on copper exposed at indoor and outdoor sites with high H<sub>2</sub>S concentrations」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル