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Aciers inoxydables et corrosion localisée : le rôle du molibdène

Abstract : The use of stainless steels (SS) as concrete reinforcement is becoming increasinglypopular in coastal and marine constructions in order to prevent corrosion induced by chlorideions penetrating into the concrete. However, the influence of Mo addition on pitting corrosionresistance of these steels is not fully understood in alkaline chloride conditions although thiselement is widely associated to an increasing corrosion resistance in acidic and neutralenvironments. Therefore, understanding Mo mechanism on corrosion resistance in alkalineconditions is hence of major importance for the setting of optimized alloy composition. ThisPhD work aims to study the effect of Mo addition on pitting corrosion properties of austenitic,ferritic and mainly lean duplex stainless steels in alkaline media, which simulates the concreteenvironment. As far as the role of Mo is concerned, it will be discussed in terms of, pittingcorrosion resistance, repassivation kinetics, and passivation properties from acidic to alkalineconditions.
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Submitted on : Monday, July 30, 2012 - 11:33:47 AM
Last modification on : Thursday, November 19, 2020 - 1:50:08 PM
Long-term archiving on: : Wednesday, October 31, 2012 - 3:21:55 AM


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  • HAL Id : tel-00721758, version 1



Thiago Mesquita. Aciers inoxydables et corrosion localisée : le rôle du molibdène. Autre. Université de Grenoble, 2012. Français. ⟨NNT : 2012GRENI006⟩. ⟨tel-00721758⟩



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