Definition - What does Nitrocarburizing mean?
Nitrocarburizing is a thermo-chemical diffusion process in which nitrogen, carbon and oxygen atoms diffuse into the surface of a steel part to form a compound layer on the part's surface. It is a variation of the nitriding process, which is done mainly to provide anti-wear resistance to a metal's surface and to improve its fatigue resistance.
Corrosionpedia explains Nitrocarburizing
Nitrocarburizing is carried out in gas nitriding furnaces or pit-type gas nitriding furnaces, which operate at temperatures up to 1202°F (650°C) and are used for surface hardening of components by nitrogen impregnation. These furnaces are fitted with an atmosphere circulation system and a provision for purging ammonia (because nitrogen is inert at that temperature, ammonia is used).
The benefits of nitrocarburizing include:
- Improved wear
- Resistance to corrosion
- Better fatigue strength
Applications for nitrocarburizing include:
- Gears and pinion shafts\Plastic injection molding
- Piston rings
- Aluminum extrusion dies
- Forging and forming dies