Structural and tribological properties of TiC-DLC coatings deposited by RCAE-PVD at various bias voltages

mosayebi, masood; Hosseini, S. R.

doi:10.1179/1743294414y.0000000395

Cited by 12 publications

(8 citation statements)

References 23 publications

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“…Over the past decades, TiN, CrN and TiC films have been extensively used as protective layers. [7][8][9][10][11][12] However, their tribological properties were still not satisfactory under the strict requirement. Voevodin et al 13 presented that TiCrN film had higher hardness and critical load than TiCrC film.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ti content on structure and mechanical properties of Cr–Ti–N films

Feng

Zhou

Wan

et al. 2017

Surface Engineering

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Cr-Ti-N films are deposited on the surface of Ti6Al4V alloy by unbalanced multi-targets reactive magnetron sputtering. In this study, the effect of the Ti content on microstructure, hardness, modulus and tribological behaviours of Cr-Ti-N films are systematically investigated. The XRD shows that with the increasing of Ti content, the phase structure evolves from Cr + Cr 2 N + TiN → amorphous → FCC solid solution. The hardness and modulus of Cr-Ti-N films are increased by improving Ti content in the films and Cr 32.5 Ti 24.6 N 42.9 film reaches maximum values of 25.8 and 362.7 GPa, respectively. The wear rate of the Cr-Ti-N films is gradually decreased with increasing Ti content and the Cr 32.5 Ti 24.6 N 42.9 film decreases five times and 25 times than Cr 50.7 Ti 10.1 N 39.2 and substrate, respectively.

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Section: Introductionmentioning

confidence: 99%

Effect of Ti content on structure and mechanical properties of Cr–Ti–N films

Feng

Zhou

Wan

et al. 2017

Surface Engineering

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“…The existence of the transfer film avoided direct contact of the friction pairs, and reduced the contact stress by enlarging the contact area. 2,[24][25][26] At last, the GLC films had relatively high thermostability, which made the graphitisation that generated by friction heat in the process of friction difficult to happen. 27 In all, the above reasons guaranteed that the GLC films could always keep a very low friction coefficient during the friction tests.…”

Section: Effect Of Thermally Driven Processmentioning

confidence: 99%

Structure and properties of GLC films deposited by PEMS

Yong¹,

Guo²,

Wang³

et al. 2016

Surface Engineering

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In this paper, an unbalanced plasma enhanced magnetron sputtering system was adopted to deposit four types of the graphite-like carbon (GLC) films under different currents of ion source. The results show that a moderate Ar + bombardment effectively adjusts the content of sp 3 hybrid structure, and significantly improves the film's compactness. With the increase of ion source current, the hardness, H/E and H 3 /E 2 ratios of the film present a change rule of increasing first and decreasing subsequently, and all achieve their maximum values under the ion source current of 10 A. Moreover, the average values of the studied GLC films are all below 0.05 with slight fluctuation, while the wear rate of the film presents a significant difference with the increase of ion source current. Especially, when the ion source current is 10 A, the friction coefficient and the wear rate of the GLC films are 0.01 and 1.7 × 10 −16 m 3 N −1 m −1 , respectively, presenting excellent tribological properties.

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“…These transition layers can easily bond with C ions to improve the adhesion. TiC and WC have high hardness to reduce the hardness gradient between substrate and DLC film 36,37 . DLC films coated on WC layers have good adhesion and low friction coefficient 38,39 .…”

Section: Introductionmentioning

confidence: 99%

“…TiC and WC have high hardness to reduce the hardness gradient between substrate and DLC film. 36,37 DLC films coated on WC layers have good adhesion and low friction coefficient. 38,39 Therefore, for cemented carbide substrate, WC itself has inherently affinity with DLC film, but the affinity is reduced because of surface passivation and impurity layer.…”

Section: Introductionmentioning

confidence: 99%

The influence of Ti plasma etching pre‐treatment on mechanical properties of DLC film on cemented carbide

Huang

Yuan

et al. 2021

Surface & Interface Analysis

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The pre-treatment of substrate surface had been a key part of DLC film preparation to improve mechanical and tribological properties. Ti plasma etching pre-treatment was investigated in this paper as a new effective surface pre-treatment method to substitute transition layer. This pre-treatment used high-energy Ti plasma to impact substrate surface. Ti plasma etched the substrate to a depth of 407 nm and increased the roughness from 1.36 to 40.39 nm. A trace layer of substrate, together with cobalt, oxides, and other impurities, was removed. Ti plasma broke some top WC crystals and combined with the free carbon ions separating from the substrate. A DLC film was deposited on the etched surface. Compared with DLC films deposited on the untreated substrate and Ti transition layer, the DLC film on the Ti plasma etched substrate had best adhesion strength of 34.14 N. The three DLC films had the same sp 3 bonding carbon content, but Ti plasma etching treatment could promote the formation of sp 3 bonds on the interface of substrate and DLC film. This DLC film had low friction coefficient of 0.12 and low wear rate of 5.11 Â 10 À7 mm 3 / mÁN. In summary, Ti plasma etching pre-treatment could significantly improve the adhesion of DLC film and keep its excellent tribological properties.

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Structural and tribological properties of TiC-DLC coatings deposited by RCAE-PVD at various bias voltages

Cited by 12 publications

References 23 publications

Effect of Ti content on structure and mechanical properties of Cr–Ti–N films

Effect of Ti content on structure and mechanical properties of Cr–Ti–N films

Structure and properties of GLC films deposited by PEMS

The influence of Ti plasma etching pre‐treatment on mechanical properties of DLC film on cemented carbide

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