Interactive Resource icon  Electrolytic Capacitor Foil - Anodising

Use this resource: Use this resource icon
Link to this page:
View at:        
Resource type: Interactive Resource
Description: This interactive animation shows how via barrier film anodising a compact featureless oxide film is formed on aluminium. The aluminium is employed as anode in an electrolytic cell containing a near neutral solution of for example ammonium pentaborate, ammonium tartrate or other. The oxide film is grown via ingress of oxygen carrying species from the electrolyte and oxidised aluminium from the anode by applying an anodic current or potential across the electrochemical cell. The forming voltage determines the layer thickness; a ratio of 1.2-1.4 nm V-1 is generally valid.
Keywords: oxide film • electrolytic cell
Categories: Materials > Metals & alloys > Aluminium & alloys
Processes > Surface treatments
Properties > Electrical, magnetic & optical > Optical
Created by: MATTER, The University of Liverpool
Iris De Graeve, Vrije Universiteit Brussel (VUB)
Herman Terryn, Vrije Universiteit Brussel (VUB)
Contributions: Marc Ryckeboer, Sapa
Christophe Sigli, Alcan Centre de Recherches de Voreppe
Hugh Shercliff, University of Cambridge
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).
Creative Commons Attribution Non-Commercial No Derivatives logo
You are free:
  • to share – to copy, distribute and transmit the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
  • noncommercial – You may not use this work for commercial purposes.
  • No Derivative Works – You may not alter, transform, or build upon this work.
View the full legal code here.
Date created: 07 May 2004
Date added: 21 December 2009
Resource ID: 2606