Interactive Resource icon  Galvanic Corrosion Mechanism

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Description: Galvanic corrosion is a form of localised corrosion, which happens whenever two metals or alloys, with a potential difference of at least 50 mV, are in direct contact with each other and with a corrosive electrolyte. The least noble of the two metals or alloys will become the anode in the corrosion reaction. This animation expalins the mechanism of galvanic corrosion. The least noble of the two metals in this example is aluminium.
Keywords: galvanic corrosion • corrosion potential • corrosive electrolyte
Categories: Science approaches > Corrosion & degradation
Materials > Metals & alloys > Aluminium & alloys
Created by: MATTER, The University of Liverpool
Steven Meijers, Corus
Carlos Caicedo-Martinez, Corus
Contributions: Andreas Blistein, Alcan
Herman Terryn, Vrije Universiteit Brussel (VUB)
Iris De Graeve, Vrije Universiteit Brussel (VUB)
Marc Ryckeboer, Sapa
Published by: European Aluminium Association, Brussels
License: This resource is released under the Creative Commons Attribution Non-Commercial No Derivatives license (2.0 UK: England & Wales).
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Date created: 29 March 2005
Date added: 07 July 2010
Resource ID: 2870