Nitro-Oxidation takes place directly after nitriding without having to stop the process. The same physical processes take place during the oxidation process with ammonia gas, but in the cooling phase the process gases and process parametres change.
The oxidation process of about 30 minutes takes place after the nitrading treatment and can be very well controlled in respect to the layer composition.
The surface of the workpiece is given additional corrosion protection and a decorative black look.