The Composition and Properties of a Protective Layer Formed on a Steel by Anodizing with 8-Hydroxyquinoline

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Other Title
  • ８‐ヒドロキシキノリン水溶液において生成した鉄のアノード酸化被膜の構造と耐食性

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Description

Carbon steel specimens were anodized by a two step procedure, first in a borate solution and second in a borate solution containing 8-hydroxyquinoline [HQ]. The resulting surface inhibits cathodic reactions such as oxygen reduction and hydrogen evolution, and it has good corrosion resistance in aerated chloride media of pH 3-10. The composition and structure of the formed layer were analyzed by UV-VIS-IR reflectance spectroscopy, Auger electron spectroscopy combined with argon ion sputtering, conversion electron Mössbauer spectroscopy, and ellipsometry. The results indicate that the protective layer is composed of two layers: the outer layer is less than 40nm in thickness and consists of condensation products of HQ and HQ derivatives formed by the anodic polarization, and the inner layer is less than 3nm in thickness and consists of Fe-HQ and/or-HQ derivatives complexes. Electrochemical measurements revealed that the inner Fe complex layer is responsible for the corrosion protection in aerated chloride media.

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Details 詳細情報について

  • CRID
    1390282679088921088
  • NII Article ID
    130003809992
  • DOI
    10.4139/sfj1950.35.402
  • ISSN
    18843395
    00260614
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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