Chemical Structure of Cathodic Film Formed on Zinc Plated Sheet in Aluminum Biphosphate Solution

DOI
  • WATANABE Takashi
    Nippon Steel Corp. Products Research and Development Laboratories
  • TARUMI Eiichi
    Nippon Steel Corp. Products Research and Development Laboratories
  • TSUDA Seizo
    Nippon Steel Corp. Products Research and Development Laboratories

Bibliographic Information

Other Title
  • 重リン酸アルミニウム浴中で処理した亜鉛メッキ鋼材上の陰極電解化成皮膜の構造について

Abstract

The chemical structure of the conversion coated film formed on zinc plated sheet by cathodic electrolysis of aluminum biphosphate solution was studied. The structure of the conversion film was determined by using X-ray diffraction, EPMA, chemical analysis, infra-red spectroscopy, TGA, and DSC. As a result of X-ray diffraction it was found that the film had an amorphous structure. The constituents of the film were determined to be P, Al and O by EPMA and chemical analysis; the amounts of Al and P were estimated 13.9% and 17.2%, respectivelly. Infra-red analysis indicated that the chemical structure of the conversion film was hydrated aluminum phosphate, and the amount of bound water was determined to be 12.3% by TGA and DSC. From these data it can be shown that the conversion film is actually an inorganic polymer consisting of a three-dimensional network of polymerized aluminum phosphate bonded with an OH bridge.

Journal

Details 詳細情報について

  • CRID
    1390001204114787072
  • NII Article ID
    130003809657
  • DOI
    10.4139/sfj1950.27.297
  • COI
    1:CAS:528:DyaE28XlvFKju70%3D
  • ISSN
    18843395
    00260614
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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