THE MECHANISM OF ATMOSPHERIC RUSTING AND THE EFFECT OF CU AND P ON THE RUST FORMATION OF LOW ALLOY STEELS

The oxidation processes of fe (11) hydroxo-complexes to alpha, beta, gamma and delta feooh and magnetite, which are important products of steels, and the effect of copper and phosphorus ions on the oxidation of the fe (11) hydro-complexes in aqueous solutions have been investigated. The mechanism of atmospheric rusting deduced from the results obtained in the present investigation has been used to explain the difference in behavior between ordinary mild steels and low alloy steels during atmospheric exposure. It is concluded that fe (11) complexes are transferred to amorphous magnetite by the catalytic effect of cu and P present in steels. The amorphous magnetite forms a compact rust layer that enhances corrosion resistance of the steel. /TRRL/

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  • Corporate Authors:

    Pergamon Press, Incorporated

    Maxwell House, Fairview Park
    Elmsford, NY  United States  10523
  • Authors:
    • Misawa, T
    • Kyuno, T
    • Seutaka, W
    • Shimodaira, S
  • Publication Date: 1971

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 35-48
  • Serial:
    • Corrosion Science
    • Volume: 11
    • Publisher: Pergamon Press, Incorporated
    • ISSN: 0010-938X

Subject/Index Terms

Filing Info

  • Accession Number: 00125649
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Apr 7 1976 12:00AM