Substrate bias effects on mechanical and tribological properties of substitutional solid solution (Ti, Al)N films prepared by reactive magnetron sputtering

Chu, Kaili; Shum, P.W.; Shen, Y.G.

doi:10.1016/j.mseb.2006.03.036

Cited by 57 publications

(20 citation statements)

References 34 publications

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“…It has been employed by numerous authors to identify the friction coefficients in both metal and wood cutting processes [34][35][36][37]. Other industrial or semi-industrial (full scale) tests, such as turning tests [38,39] and cutting tests [37,[40][41][42] are conducted as complementary and comparative tests to the pin/ball-on-disk (laboratory scale) tests.…”

Section: Tribologymentioning

confidence: 99%

A study of the wear performance of duplex treated commercial low-alloy steel against alumina and WC balls

Beliardouh¹,

Nouveau²,

Walock³

et al. 2014

Surface and Coatings Technology

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. The objective of this work is to study the improvement of the tribological properties of low alloy steel using a duplex treatment of low pressure carburizing and the deposition of a Cr-(WC-Co) coating by dual RF magnetron sputtering. The treatments result in a 500 μm thick carburized layer and a sputtered coating thickness of~2 μm. Tribological tests were made with a ball-on-disk tribometer under dry conditions with low load and low speed. The worn surfaces of the disk, the wear counterpart, and resulting debris were analyzed by X-ray diffraction, optical microscopy, optical profilometry, and a scanning electron microscope equipped with an energy-dispersive X-ray spectrometer. The wear performance of the samples was evaluated in terms of wear rates and friction coefficients during the sliding processes against two different counterparts. Experimental results have shown that sliding wear, of the investigated duplex treated low alloy steels, is strongly dependent on the counterface materials. Under testing conditions, the overall wear performance of a Cr-WC coating (Cr/W ratio of 1.12:1) deposited onto the surface of a carburized low alloy steel (0.61 wt.% C; HV = 654 ± 5) can be recommended as the best. The duplex-treated samples suffered severe, concentrated wear when against alumina. This wear is characterized by a combination of delamination, mild abrasion and oxidative wear. However, the wear mechanism seems to be oxidative and adhesive when against WC balls.

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Section: Tribologymentioning

confidence: 99%

A study of the wear performance of duplex treated commercial low-alloy steel against alumina and WC balls

Beliardouh¹,

Nouveau²,

Walock³

et al. 2014

Surface and Coatings Technology

View full text Add to dashboard Cite

show abstract

“…The enhancement of the coating hardness could be caused by the grain refinement effect with increasing bias voltage [48]. Chu et al [49] found that the residual stress was clearly related to the negative bias voltages, and high hardness is a result of such high residual stress. The compressive stress arises because of a process called "atomic peening", in which some atoms squeeze into the lattices directly, causing internal stress and increasing the coating hardness [24,50].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…The hydrogen solubility in thin films or coatings often exceeds the value for bulk systems, which is attributed to preferred hydrogen trapping at open volume defects (dislocations, grain boundaries, surfaces, and vacancies) [53]. With increasing hydrogen concentration inside the coating, the compressive stresses usually increase due to hydrogen incorporation into the open volume defects Chu et al [49] found that the residual stress was clearly related to the negative bias voltages, and high hardness is a result of such high residual stress. The compressive stress arises because of a process called "atomic peening", in which some atoms squeeze into the lattices directly, causing internal stress and increasing the coating hardness [24,50].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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

et al. 2018

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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 2 N to the approximately stoichiometric hcp-Cr 2 N 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 2 N 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 2 O 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.

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“…The influence of the process parameters on the microstructure and mechanical properties of the Ti Si N coatings in a certain method has been extensively investigated. This includes bias voltage, which significantly influences the atom mobility on the coating surface and ion bombardment [10][11][12][13]. As an effective method, cathodic arc assisted magnetron sputtering has been used for deposition of various hard protective coatings because it overcame the shortcomings of pure magnetron sputtering, such as low ionization of the reactants during deposition and poor adhesion of the resulted films [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effect of bias voltage on the structure and hardness of TiSiN composite coatings synthesized by cathodic arc assisted middle-frequency magnetron sputtering

Yang

Guo

et al. 2009

Journal of Alloys and Compounds

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Substrate bias effects on mechanical and tribological properties of substitutional solid solution (Ti, Al)N films prepared by reactive magnetron sputtering

Cited by 57 publications

References 34 publications

A study of the wear performance of duplex treated commercial low-alloy steel against alumina and WC balls

A study of the wear performance of duplex treated commercial low-alloy steel against alumina and WC balls

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

Effect of bias voltage on the structure and hardness of TiSiN composite coatings synthesized by cathodic arc assisted middle-frequency magnetron sputtering

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