Colour Anodizing Of Aluminum Alloys

At a glance..

The anodizing process develops a spongy translucent oxide over the aluminum. This oxide layer is permeable initially and will absorb liquid pigments into its structure. Immersion in boiling liquid will seal the outer surface of the oxide, trapping any pigment within its structure permanently.

The details..

The Colour Anodizing of Aluminum Alloys is a comprehensive guide that explains the process of developing a spongy translucent oxide over aluminum. The book covers all aspects of the anodization process, from preparing the material to degreasing it before beginning. It also offers advice on what kind of materials work best for this technique.

The author emphasizes the importance of using pure aluminum sheeting as cathodes in order to achieve optimal results. They explain that matte finishes are better suited for anodizing than polished surfaces and advise against attempting to anodize riveted or bolted assemblies or parts which are loosely screwed together.

Readers will find detailed instructions on how long their workpieces should be left in boiling liquid after being immersed in diluted sulfuric acid, depending on whether they want black dye (70 minutes) or other colors (20-30 minutes). The author also advises readers not to touch their degreased surface with bare hands while working with them.

Overall, this book is ideal for anyone interested in learning more about color anodizing techniques used specifically for aluminum alloys. With its step-by-step instructions and helpful tips throughout each stage of the process, even beginners can learn how to create beautiful finishes.