Ionic Nitriding

Characteristics of the process

The ionic nitriding of steels and cast irons is a surface hardening thermochemical treatment that occurs through the diffusion of nitrogen and/or carbon in the substrate.

The depth of diffusion of nitrogen that can be achieved depends on the base material and the duration of the cycle.

The Dolzago department has 2 plants for ionic nitriding with maximum dimensions of Ø 1500 mm x 2100 mm and with a capacity of 6000 Kg, while the Cremella department has a plant measuring Ø 500 x 900 mm dedicated to processes such as nitriding titanium parts for the aerospace industry.

The advantages of ionic nitriding are:

• High reproducibility of the hard and ductile nitrided layer;    
• Processing temperature between 400 °C and 800 °C;
• Lower cycle times at the same depth;
• Ability to control the formation of the 'white layer';
• No deformations;
• Reduction of the friction coefficient;
• Higher mechanical resistance to wear;