Abstract
The aim of the work was to review selected methods of plasma nitriding, used in the thermo-chemical treatment of aircraft parts. The introduction explains the nitriding process and presents the requirements on the thermoDirect Current Plasma Nitriding (DCPN), Active Screen Plasma Nitriding (ASPN) and Low Pressure Nitriding in AEGD authors drew attention to known occur in this process such as edge effect or hollow cathode effect. The Keller’s model, the Marchand’s model and the Walkowicz’s model of nitriding literature, transportation of nitrogen during Active Screen Plasma Nitriding process and to show that in this nitriding method, defects typical for Direct Current Plasma Nitriding Low Pressure Nitriding in AEGD plasma, authors also presented the model of nitriding mechanism in this process, which shows four nitrogen diffusion paths (physisorption, chemisorption, adsorption of N2, ion implantation). nitriding a layer without film on the surface.
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