Anodization is frequently known as anodic oxidization. In this “reverse” electroplating process where the component is switched as an anode, the surface is plated with an oxide layer. Besides aluminium, metals such as magnesium and titanium can also be used. With anodization, layer properties are therefore not only dependent on process parameters but also on the composition and homogeneity of the base material.
We develop processes to give materials specific attributes, e.g. porosity of the oxide layers, a coloring the layers, resistance to wear, linking them with plant design to enable their industrial implementation. Processes such as plasma-chemical anodization are also considered.
Due to the high bath voltage and low electrolyte temperatures required, energy consumption is an important issue in anodization. In the project Ökoxal, for example, we found a way of reducing process energy consumption by over 40%. Such project results can only be achieved by combining process engineering expertise with systems engineering skills.