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Journal of Materials Science

, Volume 26, Issue 7, pp 1951–1954 | Cite as

A study of the microbiological-corrosion products of steel and cast iron pipes in fresh water

  • B. Badan
  • M. Magrini
  • E. Ramous
Papers

Abstract

Biological corrosion is one of the most common corrosive processes found in steel, cast iron and other metals placed in soil, sea water and fresh water. We have studied this type of corrosion development process in steel and cast iron pipes. This corrosion process shows tubercular morphology on the inside surface of pipes. Resulting corrosion products have been examined by: chemical analysis, scanning electron microscopy (SEM), X-ray diffraction (XRD) and Mössbauer spectroscopy. In all the samples the following iron compounds were found: α-FeOOH (Goethite), γ-FeOOH (Lepidocrocite), non-stoichiometric Fe3O4 and colloidal hydrate oxide Fe(OH)3 · 0.9H2O. Small quantities of α-FeOOH and γ-FeOOH compounds were present as small size grain particles (10–20 nm). These particles may be considered responsible for worsening the organoleptic properties of water.

Keywords

Scanning Electron Microscopy Hydrate Fe3O4 Fresh Water Cast Iron 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd 1991

Authors and Affiliations

  • B. Badan
    • 1
  • M. Magrini
    • 1
  • E. Ramous
    • 1
  1. 1.Dipartimento di Innovazione Meccanica e GestionaleUniversità di PadovaPadovaItaly

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