SPECIALISED INFORMATION ON SURFACE TREATMENT
In our information centre, we offer you detailed information on specialist topics relating to chemical surface treatment. We have compiled this information on the basis of our many years of experience and expertise. If you have any questions in addition to the information we have provided, we look forward to hearing from you.
Black oxidation is a surface treatment where the surface of the steel component is coated with a black iron oxide layer Fe3O4. With black oxidation, we mean hot black oxidation which is significantly different in process and results from cold black colouring and which is also the technically preferred method.
Phosphating (previously also called bonderising or parkerising) is a surface treatment most specifically used for steel and iron components. It can also be carried out on e.g. zinc and, in special cases, other non-ferrous metals. A highly insoluble metal phosphate coating is formed on the surface during phosphating.
Our cold colouration method uses the components Alkalit, Rostalit, cold colouration and Fluid IV 5196 and only available for commercial use.
In this comparison, we contrast the two processes and look at a number of aspects such as characteristics, colouring quality, corrosion protection and much more.
We analyse the two processes and consider various aspects such as coating composition, coating thickness, coating structure and much more.