Plasma coating is a process that creates oxide-ceramic layers characterized by accurate depositions. These hard coatings are furthermore characterized by good bending fatigue strength. With MAGOXID-COAT® and KEPLA-COAT®, Aalberts surface treatment offers you two anodic plasma-chemical surface finishes with functional characteristics profiles, the total of which cannot be achieved with electroplated coatings. MAGOXID-COAT® is used on magnesium alloys, whereas KEPLA-COAT® is used for the finishing of materials made from aluminum and titanium alloys. The plasma-chemical process creates oxide-ceramic coatings which, apart from offering wear and corrosion protection, also fulfill further requirements, such as hardness, even layer structures, fatigue strength, dimensional accuracy and thermal endurance. Edges, cavities and reliefs are evenly coated, i.e. that there is no edge formation as is the case during electroplating.
Electrolytic processes are performed with the help of an external power source, while the workpiece to be coated is used as the anode. The workpiece surface is converted into oxides, while saline solutions are used as electrolytes. Anodic coatings are created in the electrolyte by plasma discharges on the surface of the part to be coated.