ON THE PROTECTIVE NATURE OF ATMOSPHERIC RUST ON LOW-ALLOY STEEL

The essential nature of protective rust films formed on low-alloy, weathering steels by atmospheric exposure has been clarified as to (1) the electrochemical behavior, (2) catalytic ability to form sulphate from SO2 in the atmosphere, and (3) distribution of active corrosion sites on rusted steel surfaces. Autoradiographs show that active corrosion sites are less on a more corrosion resistant steel and decrease with exposure time. The more continuous nature of the rust coating on such a steel is also obvious from greater anodic polarization. Futhermore, a more resistant steel forms less sulphate in polluted atmospheres due to the favourable nature of the rust. /Author/TRRL/

  • Availability:
  • Corporate Authors:

    Pergamon Press, Incorporated

    Maxwell House, Fairview Park
    Elmsford, NY  United States  10523
  • Authors:
    • Matsushima, I
    • Veno, T
  • Publication Date: 1971

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 129-140
  • Serial:
    • Corrosion Science
    • Volume: 11
    • Publisher: Pergamon Press, Incorporated
    • ISSN: 0010-938X

Subject/Index Terms

Filing Info

  • Accession Number: 00097809
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Sep 10 1975 12:00AM