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WIOPEDIA - The WIOTEC® electroplating encyclopaedia


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C

Carbonitriding layers (nitrocarburising layers)

Carbonitriding produces hardening layers that are almost as hard as nitriding layers. They are more temper resistant than case hardening layers and have a strong bond with the base material.

Process:
Diffusion (at the same time) of carbon and nitrogen from the reaction gas ammonia, hydrogen and carbon oxides or from ammonia, hydrocarbons and carbon oxides at about 600 degrees Celsius. In bath carbonitriding, which takes place in a cyanogenic salt bath, carbon and hydrogen are absorbed simultaneously. It takes place at temperatures of 700 - 900 degrees C and this treatment, which lasts about five hours, creates a 15 µ thick connecting zone - also called a nitride layer - with an underlying diffusion zone up to 1 mm thick.

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Auf den Geeren 9-11
59469 Ense-Höingen, Germany

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59759 Arnsberg, Germany

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