Anodizing of aluminium in surface industry

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  • Andodizing of Aluminium

Example flowsheet:

Scheme of different possibilities for the surface treatment of aluminium:


Image: Andodizing of Aluminium.jpg

Literature: Oberflächenbehandlung von Aluminium; T.W. Jelinek; Eugen G. Leuze Verlag, D-88348; 1997


  • Typical parameters of the process
Process Temperature [°C] Chemicals Details Literature
General anodizing 15-25 150-230 g/l H2SO4 anodizing voltage: 17-22 V; film thickness: 5- 30 μm BAT for the surface treatment of metals & plastics, 2006
Hard anodizing <5 film thickness: 25- 250 μm
Chromic acid anodizing 38-42 30-100 g of chromic acid/l film thickness: 2-5 μm


Image: Typical parameters of the process, anodizing2.jpg

Literature: Oberflächenbehandlung von Aluminium; T.W. Jelinek; Eugen G. Leuze Verlag, D-88348; 1997


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