Elettrocolouring

One of the most effective methods for staining aluminum is the method of electrocoloring.
The artifact after being anodized is immersed in an acidic solution containing metal salts and subjected to an alternating current. In these conditions, metal deposits will be formed in the form of oxides in the porous structure of the oxidized film, producing the characteristic color of the used metal salt.

The colors that can be obtained from this type of treatment are from stainless steel to black, depending on the time of exposure in the tank of the artifact.