Interactive Resource icon  Influence of Alloying Elements

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Description: The alloying elements most commonly added to aluminium are Cu, Mn, Si, Mg and Zn. This animation shows how such elements added within the solid solubility limits modify the corrosion potential of aluminium. Generally, the addition of alloying elements less active than aluminium raises the corrosion potential; conversely, elements more active than aluminium lower the corrosion potential of aluminium. Corrosion potential is measured with a reference electrode. The most common electrodes are calomel and Ag/AgCl electrodes. Calomel electrodes are commercially available with different concentrations and are most commonly available saturated.
Keywords: alloying elements • corrosion potential • reference electrode • calomel
Categories: Science approaches > Corrosion & degradation
Science approaches > Corrosion & degradation > Corrosion principles
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: 12 May 2005
Date added: 07 July 2010
Resource ID: 2862