Twenty years of experience with corrosion failures caused by manganese oxidizing microorganisms / P. Linhardt in Materials and corrosion, Vol. 61 N° 12 (Décembre 2010)  

Public ISBD [article]  inMaterials and corrosion > Vol. 61 N° 12 (Décembre 2010) . - pp. 1034–1039 Titre : Twenty years of experience with corrosion failures caused by manganese oxidizing microorganisms Type de document : texte imprimé Auteurs : P. Linhardt, Auteur Année de publication : 2011 Article en page(s) : pp. 1034–1039 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Case histories  manganese oxidizing microorganisms  microbially influenced corrosion Résumé : Manganese oxidizing microorganisms are known as ubiquitous species in soil and fresh water. Their ability to extract dissolved manganese even at minute concentrations from the water and to biomineralize it as manganese(III/IV)oxides makes them potentially relevant for corrosion processes in technical systems carrying freshwater. These oxides are known as strong oxidants and may act as catalyst for the oxygen reduction reaction. Thus, they are cathodically active, possibly driving anodic metal dissolution processes. The personal experiences over two decades from failure analysis related to these organisms have indeed shown that manganese oxidizers may appear in all kinds of freshwater systems. This paper summarizes observations and conclusions drawn from these cases and provides an overview on the methods found useful in their investigation. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005769/abstract [article] Twenty years of experience with corrosion failures caused by manganese oxidizing microorganisms [texte imprimé] / P. Linhardt, Auteur . - 2011 . - pp. 1034–1039. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 61 N° 12 (Décembre 2010) . - pp. 1034–1039 Mots-clés : Case histories  manganese oxidizing microorganisms  microbially influenced corrosion Résumé : Manganese oxidizing microorganisms are known as ubiquitous species in soil and fresh water. Their ability to extract dissolved manganese even at minute concentrations from the water and to biomineralize it as manganese(III/IV)oxides makes them potentially relevant for corrosion processes in technical systems carrying freshwater. These oxides are known as strong oxidants and may act as catalyst for the oxygen reduction reaction. Thus, they are cathodically active, possibly driving anodic metal dissolution processes. The personal experiences over two decades from failure analysis related to these organisms have indeed shown that manganese oxidizers may appear in all kinds of freshwater systems. This paper summarizes observations and conclusions drawn from these cases and provides an overview on the methods found useful in their investigation. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005769/abstract

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