海水中でのSUS304ステンレス鋼の自然浸漬電位におよぼす照度の影響 Effect of Luminous Intensity on Open-Circuit Potentials for SUS304 Stainless Steel in Natural Sea Water

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著者

    • 戸嶋 茂郎 TOSHIMA Shigero
    • 鶴岡工業高等専門学校物質工学科 Department of Materials Science and Bioengineering, Tsuruoka National College of Technology
    • Lim Lo-Yian LIM Lo-Yian
    • 鶴岡工業高等専門学校物質工学科 Department of Materials Science and Bioengineering, Tsuruoka National College of Technology
    • 田澤 尚志 TAZAWA Hisashi
    • 鶴岡工業高等専門学校物質工学科 Department of Materials Science and Bioengineering, Tsuruoka National College of Technology

抄録

It has been well known that the activity of microorganisms in corrosive environment has responsibility for an acceleration of corrosion rate of metallic materials. Therefore, the factors such as illuminous intensity which affects the degree of microorganisms activity can be thought to be associated with corrosion behavior of metallic materials. In this study, the effect of illumination on open-circuit potential (<i>E</i><sub>OCP</sub>) of SUS 304 stainless steel in natural sea water was investigated. Experimental results showed that <i>E</i><sub>OCP</sub> became ennobled with a decrease in illumination, and the response of <i>E</i><sub>OCP</sub> to illumination changes was rather rapid. The maximum range of <i>E</i><sub>OCP</sub> change was about 200mV with the illumination varying between 0 lx (dark) and 18000 lx. In addition, it was found that the catholic current on Pt electrode at 0V vs. SSE in natural sea water raised with an increase in illumination. Perturbations of <i>E</i><sub>OCP</sub> and catholic current with the luminous intensity were observed at the earliest stage of marine biofilm formation on the surface. It was suggested that the differences in luminous intensity on the stainless steel enhanced the possibility of localized corrosion in natural sea water.

収録刊行物

  • 材料と環境 : zairyo-to-kankyo

    材料と環境 : zairyo-to-kankyo 51(4), 161-164, 2002-04-15

    Japan Society of Corrosion Engineering

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各種コード

  • NII論文ID(NAID)
    10008007927
  • NII書誌ID(NCID)
    AN10235427
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09170480
  • NDL 記事登録ID
    6135969
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-266
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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