Active species in microwave postdischarge for steel-surface nitriding

An approach for the identification of diffusion coefficients in the quasi-steady state of a post-discharge nitriding process

“…The ones which use diffusion coefficient empirical expressions based on statistical principles and experimental measurements of nitrogen concentration in order to estimate the magnitudes of the involved statistical parameters [22,17,18]. 2.…”

Measurement and modeling of N‐atom behavior in the afterglow of a microwave plasma

“…Nitrides of 111-V semiconductors are promising materials for electronics and optical devices (Strite and Morkoc, 1992;Sun and Ekerdt, 1993). Nitrogen afterglow can be used for steel surface nitriding (Ricard et al, 1990;Bougdira et al, 1991). Also nitrogen plasmas could be used to create carbon nitrides (Han and Feldman, 1988;Niu et al, 19931, very hard materials that have been shown to have excellent tribological properties (Chen et al, 1992).…”

Plasma nitriding of low alloy steels at floating and cathodic potentials

“…In order to reduce the effect of the above-mentioned disadvantages some new processes were developed including postdischarge nitriding [8][9][10], plasma immersion ion implantation [11,12] and active screen nitriding. In active screen nitriding the treated parts are placed inside a metallic grid (active screen) being as a cathode in discharge system [13].…”