放射線誘起表面活性を利用した防食

• 古谷 正裕

  財団法人電力中央研究所

• 賞雅 寛而

  東京海洋大学海洋工学部海洋電子機械工学科

• 岡本 孝司

  東京大学大学院工学研究科

• 安永 龍哉

  株式会社神戸製鋼所

• 植松 進

  独立行政法人海上技術安全研究所

書誌事項

タイトル別名

• Corrosion Control Based on Radiation Induced Surface Activation

抄録

When a semiconductor film is irradiated by gamma rays, excited electrons are transferred to abase metal in contact with the film, resulting in a drop of corrosion potential. The authors propose a corrosion mitigation method based on radiation induced surface activation (RISA) phenomena by supplying gamma rays from outside the material, or based on a self-excited methodology activating the film and/or the base metal. The corrosion potential of ZrO₂ coated SUS304L was shifted down to the range between -90 mV and -300 mV vs. SSE by gamma-ray irradiation. The corrosion potential was further shifted down to -600 mV when a CoCr intermediate layer was inserted between the ZrO₂ spray coating film and the SUS304L base metal. Iron specimens with a spray coating film of TiO₂, ZrO₂, and Al₂O₃ were immersed in a 3 wt% sodium chloride aqueous solution. Pitting and general corrosion were observed on both the specimens kept in a darkroom and illuminated with ultraviolet rays. Pitting and general corrosion were, however, suppressed on all three specimens irradiated with gamma rays.

収録刊行物

• マリンエンジニアリング

  マリンエンジニアリング 41 (2), 278-284, 2006

  公益社団法人 日本マリンエンジニアリング学会

詳細情報

• CRID: 1390001204570952832
• NII論文ID: 130001775674
• DOI: 10.5988/jime.41.2_278
• ISSN: 18843778
• ISSN: 13461427
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可