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topic 29799

Chromic Acid Anodization process control



2004

Hello Everyone,

We have a problem I hope someone could help me with. We do chromic acid anodizing for some aluminum alloys and need help in determining the concentration for the chromic acid. Are there any titration methods or any procedures to determine the concentration and do this properly? I would appreciate any suggestions you all would have.

Thank you,

Noel Yang
Plating Shop - Oldsmar, Florida, USA


December 23, 2011

Hi Kyle,

Do you have access to either the Canning Handbook or the Electroplating Engineering Handbook? Both of these publications have methods for analysis of both free and total chrome. Both publications are worth having.

Brian Terry
Aerospace - Yeovil, Somerset, UK

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