Atmospheric corrosion of copper in an indoor environment with a high H 2S concentration

M. Watanabe, H. Hirota, T. Handa, N. Kuwaki, J. Sakai

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    4 Citations (Scopus)

    Abstract

    Atmospheric corrosion of copper was investigated in an indoor environment with a remarkably high concentration of hydrogen sulfide (H 2S). The exposure site was a spa in the Noboribetsu hot springs area of Hokkaido, Japan. A copper plate was exposed for about 30 days inside a machine room to estimate the corrosivity. For reference, a copper plate was simultaneously exposed outdoors in the same area. After exposure, the corrosion product on the plates was characterized using X-ray fluorescence analysis, X-ray diffraction (XRD), scanning electron microscopy, and glow discharge optical emission spectroscopy (GDOES). The XRD pattern of the copper exposed indoors showed the presence of cuprite (Cu 2O) and Cu 2S, and the latter was preferentially formed. On the copper exposed outdoors, Cu 2O, Cu 2S, and two kinds of basic copper sulfates (posnjakite and brochantite) were found. GDOES depth profiles revealed a difference in the distributions of sulfur and oxygen in the corrosion product between the copper exposed indoors and outdoors. The thickness of the product on the copper exposed indoors estimated by GDOES depth profiling was more than 1 μm, which corresponds to the GX level (severe) prescribed by ISA Standard S71.04. There was also a difference in the surface morphology. These differences in the corrosion product can be explained by the difference in relative humidity, which affected the copper corrosion mechanism.

    Original languageEnglish
    Title of host publication17th International Corrosion Congress 2008: Corrosion Control in the Service of Society
    Pages619-626
    Number of pages8
    Volume1
    Publication statusPublished - 2008
    Event17th International Corrosion Congress 2008: Corrosion Control in the Service of Society - Las Vegas, NV
    Duration: 2008 Oct 62008 Oct 10

    Other

    Other17th International Corrosion Congress 2008: Corrosion Control in the Service of Society
    CityLas Vegas, NV
    Period08/10/608/10/10

    Fingerprint

    Atmospheric corrosion
    Copper
    Optical emission spectroscopy
    Glow discharges
    Corrosion
    Copper corrosion
    Hot springs
    Copper Sulfate
    Hydrogen Sulfide
    Depth profiling
    Sulfur
    Hydrogen sulfide
    X ray diffraction analysis
    Diffraction patterns
    Surface morphology
    Atmospheric humidity
    Fluorescence
    Oxygen
    X ray diffraction
    X rays

    Keywords

    • Atmospheric corrosion
    • Copper
    • Hot springs area
    • Hydrogen sulfide

    ASJC Scopus subject areas

    • Colloid and Surface Chemistry
    • Surfaces, Coatings and Films

    Cite this

    Watanabe, M., Hirota, H., Handa, T., Kuwaki, N., & Sakai, J. (2008). Atmospheric corrosion of copper in an indoor environment with a high H 2S concentration. In 17th International Corrosion Congress 2008: Corrosion Control in the Service of Society (Vol. 1, pp. 619-626)

    Atmospheric corrosion of copper in an indoor environment with a high H 2S concentration. / Watanabe, M.; Hirota, H.; Handa, T.; Kuwaki, N.; Sakai, J.

    17th International Corrosion Congress 2008: Corrosion Control in the Service of Society. Vol. 1 2008. p. 619-626.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Watanabe, M, Hirota, H, Handa, T, Kuwaki, N & Sakai, J 2008, Atmospheric corrosion of copper in an indoor environment with a high H 2S concentration. in 17th International Corrosion Congress 2008: Corrosion Control in the Service of Society. vol. 1, pp. 619-626, 17th International Corrosion Congress 2008: Corrosion Control in the Service of Society, Las Vegas, NV, 08/10/6.
    Watanabe M, Hirota H, Handa T, Kuwaki N, Sakai J. Atmospheric corrosion of copper in an indoor environment with a high H 2S concentration. In 17th International Corrosion Congress 2008: Corrosion Control in the Service of Society. Vol. 1. 2008. p. 619-626
    Watanabe, M. ; Hirota, H. ; Handa, T. ; Kuwaki, N. ; Sakai, J. / Atmospheric corrosion of copper in an indoor environment with a high H 2S concentration. 17th International Corrosion Congress 2008: Corrosion Control in the Service of Society. Vol. 1 2008. pp. 619-626
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