Abstract
Gas nitriding in partially dissociated ammonia is widely used in machine building. Surface layers obtained by this method consist of continuous nitrides and are characterized by high brittleness and susceptibility to scoring and spalling in operation. The processes of short-duration gas nitriding in a mixture of ammonia and exogenic gas used by the VAZ plant provide surface layers that are more plastic than nitride, carbonitride, and oxynitride layers. The chemical reactions occurring in this process are analyzed and the equilibrium composition of the exogenic gas is calculated.
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