Low-inertia method of control over nitrogen concentration in the PVD nitride coatings by non-self-sustained arc discharge with thermionic and hollow cathodes

Крысина, О. В.; Koval, N. N.; Kovalsky, S. S.; Шугуров, В. В.; Lopatin, I. V.; Prokopenko, N. A.; Петрикова, Е. А.

doi:10.1016/j.vacuum.2021.110123

Cited by 10 publications

(2 citation statements)

References 25 publications

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“…PN can be performed using various types of plasma source based on radiofrequency inductively coupled plasma (RF-ICP) [15][16][17][18], direct current (DC) glow [19,20] or arc discharges [21], microwave electron cyclotron (ECR) plasma [22], and others [23]. Unlike other techniques, PN based on RF-ICP has a higher nitriding rate [17].…”

Section: Introductionmentioning

confidence: 99%

Duplex Treatment of AISI 420 Steel by RF-ICP Nitriding and CrAlN Coating Deposition: The Role of Nitriding Duration

2022

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The duplex treatment of AISI 420 steel samples by nitriding in a radiofrequency inductively coupled plasma (RF-ICP) discharge of Ar + N2 + H2 atmosphere followed by CrAlN coating deposition was performed in this study. The influence of plasma nitriding (PN) duration (10, 20, 40, and 60 min) on the structural and functional properties of the duplex-treated samples was determined. A non-linear dependence of AISI 420 steel nitriding kinetics was found on the square root of the PN duration. The thicknesses of the compound layer (CL) and nitrogen diffusion zone (DZ) in the samples and their phase composition resulted in different critical loads of coating failures under adhesion tests. Increasing the load-bearing capacity by the PN caused coating hardening in duplex-treated samples. The role of the PN duration on the wear characteristics of the AISI 420 steel samples after the duplex treatment has been discussed. Corrosion tests of AISI 420 steel demonstrated the significant enhancement (5–67 times) of its corrosion resistance in a 3.5 wt.% NaCl solution after duplex treatment.

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Section: Introductionmentioning

confidence: 99%

Duplex Treatment of AISI 420 Steel by RF-ICP Nitriding and CrAlN Coating Deposition: The Role of Nitriding Duration

2022

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“…In such systems at a low gas pressure, the volume of the cathode cavity can achieve 0.5 m 3 [3,4]. The application of the steady-state and pulsed discharges with a hollow cathode in obtaining electron and ion beams should also be mentioned [2,[8][9][10][11][12][13]. * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Operating modes in a low-pressure glow discharge with hollow cathode

Korolev¹,

Landl²,

Франц³

et al. 2022

Plasma Sources Sci. Technol.

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The paper deals with the investigations of the discharge in hydrogen in the conditions close to that for the trigger units of the pseudospark switches. The following modes of discharge sustaining are classified: the Townsend discharge, the suppressed glow discharge with hollow cathode, the intermediate mode of the gradual transition from the suppressed discharge to the ordinary glow discharge, and the ordinary discharge in which the negative glow plasma occupies the whole depth of the cathode cavity. As applied to the ordinary discharge, the theoretical model that offers a possibility to estimate the negative glow parameters is developed. In the current range (1.6–10) mA the electron densities in the negative glow region are (1.7–8.7) 108cm–3. The interpretation for the mechanism of the current passage to the anode is also proposed based on the model. In particular, the explanation of the fact that at a low discharge current the region of the positive column plasma near the flat anode appears is given.

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Structure and Properties of Multi-Layer Films of High-Entropy Metals Deposited by the Ion-Plasma Method

et al. 2022

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Low-inertia method of control over nitrogen concentration in the PVD nitride coatings by non-self-sustained arc discharge with thermionic and hollow cathodes

Cited by 10 publications

References 25 publications

Duplex Treatment of AISI 420 Steel by RF-ICP Nitriding and CrAlN Coating Deposition: The Role of Nitriding Duration

Duplex Treatment of AISI 420 Steel by RF-ICP Nitriding and CrAlN Coating Deposition: The Role of Nitriding Duration

Operating modes in a low-pressure glow discharge with hollow cathode

Structure and Properties of Multi-Layer Films of High-Entropy Metals Deposited by the Ion-Plasma Method

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