Hydrogen Permeation, and Mechanical and Tribological Behavior, of CrNx Coatings Deposited at Various Bias Voltages on IN718 by Direct Current Reactive Sputtering

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Hydrogen Permeation, and Mechanical and Tribological Behavior, of CrNx Coatings Deposited at Various Bias Voltages on IN718 by Direct Current Reactive Sputtering. / Kashkarov, Egor B.; Obrosov, Aleksei; Sutygina, Alina N.; Uludintceva, Elena; Mitrofanov, Andrei; Weiß, Sabine.

In: Coatings, Vol. 8, No. 2, 66, 01.02.2018, p. 66.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{d0a96808e468420aa13c4f867d9d9fb0,

title = "Hydrogen Permeation, and Mechanical and Tribological Behavior, of CrNx Coatings Deposited at Various Bias Voltages on IN718 by Direct Current Reactive Sputtering",

abstract = "In the current work, the microstructure, hydrogen permeability, and properties of chromium nitride (CrN x) thin films deposited on the Inconel 718 superalloy using direct current reactive sputtering are investigated. The influence of the substrate bias voltage on the crystal structure, mechanical, and tribological properties before and after hydrogen exposure was studied. It was found that increasing the substrate bias voltage leads to densification of the coating. X-ray diffraction (XRD) results reveal a change from mixed fcc-CrN + hcp-Cr 2N to the approximately stoichiometric hcp-Cr 2N phase with increasing substrate bias confirmed by wavelength-dispersive X-ray spectroscopy (WDS). The texture coefficients of (113), (110), and (111) planes vary significantly with increasing substrate bias voltage. The hydrogen permeability was measured by gas-phase hydrogenation. The CrN coating deposited at 60 V with mixed c-CrN and (113) textured hcp-Cr 2N phases exhibits the lowest hydrogen absorption at 873 K. It is suggested that the crystal orientation is only one parameter influencing the permeation resistance of the CrN x coating together with the film structure, the presence of mixing phases, and the packing density of the structure. After hydrogenation, the hardness increased for all coatings, which could be related to the formation of a Cr 2O 3 oxide film on the surface, as well as the defect formation after hydrogen loading. Tribological tests reveal that hydrogenation leads to a decrease of the friction coefficient by up to 40%. The lowest value of 0.25 ± 0.02 was reached for the CrN x coating deposited at 60 V after hydrogenation. ",

keywords = "CrNx coatings, Physical Vapour Deposition (PVD), hydrogenation, Tribology, mechanical properties, X-ray diffraction, CrN coatings, Mechanical properties, Hydrogenation, GRAIN-BOUNDARIES, INCONEL 718, HARD COATINGS, NITRIDE THIN-FILMS, EMBRITTLEMENT SENSITIVITY, RESIDUAL-STRESS, N COATINGS, NICKEL, FREQUENCY, MICROSTRUCTURE",

author = "Kashkarov, {Egor B.} and Aleksei Obrosov and Sutygina, {Alina N.} and Elena Uludintceva and Andrei Mitrofanov and Sabine Wei{\ss}",

year = "2018",

month = feb,

day = "1",

doi = "10.3390/coatings8020066",

language = "English",

volume = "8",

pages = "66",

journal = "Coatings",

issn = "2079-6412",

publisher = "MDPI AG",

number = "2",

}

RIS

TY - JOUR

T1 - Hydrogen Permeation, and Mechanical and Tribological Behavior, of CrNx Coatings Deposited at Various Bias Voltages on IN718 by Direct Current Reactive Sputtering

AU - Kashkarov, Egor B.

AU - Obrosov, Aleksei

AU - Sutygina, Alina N.

AU - Uludintceva, Elena

AU - Mitrofanov, Andrei

AU - Weiß, Sabine

PY - 2018/2/1

Y1 - 2018/2/1

N2 - In the current work, the microstructure, hydrogen permeability, and properties of chromium nitride (CrN x) thin films deposited on the Inconel 718 superalloy using direct current reactive sputtering are investigated. The influence of the substrate bias voltage on the crystal structure, mechanical, and tribological properties before and after hydrogen exposure was studied. It was found that increasing the substrate bias voltage leads to densification of the coating. X-ray diffraction (XRD) results reveal a change from mixed fcc-CrN + hcp-Cr 2N to the approximately stoichiometric hcp-Cr 2N phase with increasing substrate bias confirmed by wavelength-dispersive X-ray spectroscopy (WDS). The texture coefficients of (113), (110), and (111) planes vary significantly with increasing substrate bias voltage. The hydrogen permeability was measured by gas-phase hydrogenation. The CrN coating deposited at 60 V with mixed c-CrN and (113) textured hcp-Cr 2N phases exhibits the lowest hydrogen absorption at 873 K. It is suggested that the crystal orientation is only one parameter influencing the permeation resistance of the CrN x coating together with the film structure, the presence of mixing phases, and the packing density of the structure. After hydrogenation, the hardness increased for all coatings, which could be related to the formation of a Cr 2O 3 oxide film on the surface, as well as the defect formation after hydrogen loading. Tribological tests reveal that hydrogenation leads to a decrease of the friction coefficient by up to 40%. The lowest value of 0.25 ± 0.02 was reached for the CrN x coating deposited at 60 V after hydrogenation.

AB - In the current work, the microstructure, hydrogen permeability, and properties of chromium nitride (CrN x) thin films deposited on the Inconel 718 superalloy using direct current reactive sputtering are investigated. The influence of the substrate bias voltage on the crystal structure, mechanical, and tribological properties before and after hydrogen exposure was studied. It was found that increasing the substrate bias voltage leads to densification of the coating. X-ray diffraction (XRD) results reveal a change from mixed fcc-CrN + hcp-Cr 2N to the approximately stoichiometric hcp-Cr 2N phase with increasing substrate bias confirmed by wavelength-dispersive X-ray spectroscopy (WDS). The texture coefficients of (113), (110), and (111) planes vary significantly with increasing substrate bias voltage. The hydrogen permeability was measured by gas-phase hydrogenation. The CrN coating deposited at 60 V with mixed c-CrN and (113) textured hcp-Cr 2N phases exhibits the lowest hydrogen absorption at 873 K. It is suggested that the crystal orientation is only one parameter influencing the permeation resistance of the CrN x coating together with the film structure, the presence of mixing phases, and the packing density of the structure. After hydrogenation, the hardness increased for all coatings, which could be related to the formation of a Cr 2O 3 oxide film on the surface, as well as the defect formation after hydrogen loading. Tribological tests reveal that hydrogenation leads to a decrease of the friction coefficient by up to 40%. The lowest value of 0.25 ± 0.02 was reached for the CrN x coating deposited at 60 V after hydrogenation.

KW - CrNx coatings

KW - Physical Vapour Deposition (PVD)

KW - hydrogenation

KW - Tribology

KW - mechanical properties

KW - X-ray diffraction

KW - CrN coatings

KW - Mechanical properties

KW - Hydrogenation

KW - GRAIN-BOUNDARIES

KW - INCONEL 718

KW - HARD COATINGS

KW - NITRIDE THIN-FILMS

KW - EMBRITTLEMENT SENSITIVITY

KW - RESIDUAL-STRESS

KW - N COATINGS

KW - NICKEL

KW - FREQUENCY

KW - MICROSTRUCTURE

UR - http://www.scopus.com/inward/record.url?scp=85051530311&partnerID=8YFLogxK

UR - http://www.mdpi.com/2079-6412/8/2/66

UR - http://www.mendeley.com/research/hydrogen-permeation-mechanical-tribological-behavior-crnx-coatings-deposited-various-bias-voltages-i

U2 - 10.3390/coatings8020066

DO - 10.3390/coatings8020066

M3 - Article

VL - 8

SP - 66

JO - Coatings

JF - Coatings

SN - 2079-6412

IS - 2

M1 - 66

ER -

ID: 14668885