Influence of plasma nitriding treatment on the adhesion of DLC films deposited on AISI 4140 steel by PVD magnetron sputtering

Kovacı, H.; Baran, Özlem; Bayrak, Özgü; Yetim, A.F.; Çelik, A.

doi:10.1080/01694243.2017.1293923

Cited by 22 publications

(11 citation statements)

References 32 publications

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“…Other authors also observed delamination of a DLC coating deposited on the untreated steel substrate related to the residual stresses in the coating. [40] Glow discharge nitriding process introduces internal stresses and improves hardness of the steel surface [41,42] ; thus, the adhesion of the coating produced on nitride substrate is higher. By increasing time and temperature of glow discharge nitriding of steel stresses, hardness and thickness in the nitrided intermediate layer grow.…”

Section: Discussionmentioning

confidence: 99%

The Microstructure and Properties of Carbon Thin Films on Nanobainitic Steel

Skołek

Meredyk

Tarnowski

et al. 2021

Metall Mater Trans A

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The aim of this study was to assess whether it is possible to produce a high adhesive carbon coating by applying low-temperature RFCVD and glow discharge methods on nanobainitic X37CrMoV5-1 steel with and without nitrided sublayer. For this purpose, several methods of investigation were used: observations of coating morphology by scanning electron microscopy (SEM), analysis of bonds found in coatings (Raman spectroscopy), microhardness tests and adhesion of coatings (Scratch tests). Our research has shown that low-temperature RFCVD and glow discharge processes of nanobainitic X37CrMoV5-1 steel allow producing carbon coatings that can be described as hardened carbon coatings with very high hardness—> 2000 HV 0.25 in case of RFCVD processes and > 3300 HV 0.025 for glow discharge process and low friction coefficient—near 0.12 at 5 N load. However, the adhesion of produced coatings to the steel substrate strongly depends on the appropriate selection of the process parameters and on the proper preparation of the substrate before the deposition regarding the thermal stability of nanobainite.

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Section: Discussionmentioning

confidence: 99%

The Microstructure and Properties of Carbon Thin Films on Nanobainitic Steel

Skołek

Meredyk

Tarnowski

et al. 2021

Metall Mater Trans A

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“…Combined processing composed of plasma nitriding and wear-resistant coating deposition ensures a perfect tribological behavior of steel [32]. Plasma nitriding can also improve the adhesion of DLC films deposited on steel by magnetron sputtering [33].…”

Section: Figurementioning

confidence: 99%

Surface Hardening of Massive Steel Products in the Low-pressure Glow Discharge Plasma

et al. 2019

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A process vacuum chamber is filled with a homogeneous plasma of glow discharge with electrostatic electron confinement, which is used for surface hardening of massive products. At the current of 2–20 A and the gas pressure ranging from 0.1 to 1 Pa the discharge voltage amounts to 350–500 V. When a bias voltage of 2 kV is applied to an immersed in the plasma hollow cylinder with a mass of 15 kg, electrical power spent on heating it by accelerated ions exceeds by an order of magnitude the power spent on the discharge maintenance. The massive cylinder is heated up to 700 °C for 15 min. When argon mixture with nitrogen (30%) is used, the nitriding for 3h results in an increase in the surface hardness from 400 up to 1000 HV50 and the nitrided layer thickness grows to ~100 μm. The nitriding rate is enhanced by a high degree of nitrogen dissociation due to decomposition by fast electrons and surface structural defects due to bombardment by high-energy ions.

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“…18 Plasma nitriding is a surface treatment process used for surface hardening by using glow discharge technology, which introduces elemental nitrogen into the surface of a metal part and further subsequent diffusion into the material. [19][20][21][22][23] In the process of plasma nitriding, a high-voltage electrical energy is used to form the plasma of nitrogen and hydrogen gas in the vacuum. Nitrogen ions stimulate to impinge on the workpiece through the plasma.…”

Section: Introductionmentioning

confidence: 99%

Surface engineering analysis of plasma-nitrided die steels

Kumar

Kaur

Joseph

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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In the current investigation, an effort was made to analyze the sliding wear and friction characteristics of the surface engineered hot forming tool steel. A surface treatment technique plasma nitriding was developed onto the surface of the hot forming tool steel namely AISI H13 with a view to reduce the friction coefficients and minimize wear. The treatment was done in various N2/H2 gas mixtures for the fixed time of 24 h and at a fixed temperature of 500 ℃. The phases formed on the plasma-nitrided surface have been identified by the X-ray diffraction technique. The surface morphology of nitrided specimens and the composition of the nitride particles have been analyzed using scanning electron microscopy/energy-dispersive spectroscopy techniques. Thereafter, the untreated and treated steel specimens were chosen to slide against high strength low alloy steel (actual workpiece material) at elevated temperatures. The tests were conducted on high-temperature tribometer under the constant load of 25 N at room temperature, 200 ℃, 400 ℃, and 600 ℃. The results have shown that the average friction coefficients and specific wear rate values decrease from room temperature to 400 ℃ and again increase at 600 ℃.

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Influence of plasma nitriding treatment on the adhesion of DLC films deposited on AISI 4140 steel by PVD magnetron sputtering

Cited by 22 publications

References 32 publications

The Microstructure and Properties of Carbon Thin Films on Nanobainitic Steel

The Microstructure and Properties of Carbon Thin Films on Nanobainitic Steel

Surface Hardening of Massive Steel Products in the Low-pressure Glow Discharge Plasma

Surface engineering analysis of plasma-nitrided die steels

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