Further improving the mechanical and tribological properties of low content Ti-doped DLC film by W incorporating

Li, Qiang; Gao, Kaixiong; Zhang, Lifang; Wang, Jian; Zhang, Bin; Zhang, Junyan

doi:10.1016/j.apsusc.2015.06.040

Cited by 50 publications

(16 citation statements)

References 28 publications

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“…7(a), consisting of the prominent G and smaller underlying D peaks (centered approximately 1,530 and 1,350 cm −1 , respectively). The G-peak is attributed to the stretching vibration of the sp 2 bonds in chains or in aromatic rings, and the D-peak is assigned to the breathing mode of the sp 2 bonds in the rings only [33,34]. Generally, more information on the carbon bonds can be derived by the deconvoluted data including the G-peak position and the intensity ratio of the D to G peaks (ID/IG), where the G-peak position is considered to depend on the sp 2 content and the ID/IG ratio has a direct correlation with the sp 2 /sp 3 ratio.…”

Section: Raman Analysis Of Dlc/rubbermentioning

confidence: 99%

Adhesion and friction performance of DLC/rubber: The influence of plasma pretreatment

Chun

Gong

et al. 2021

Friction

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Diamond-like carbon (DLC) films are deposited on rubber surfaces to protect the rubber components, and surface pretreatment of the rubber substrates prior to the film deposition can improve the adhesion between the DLC films and the rubber. Thus, the principal purpose of this work concentrates on determining the effects of argon (Ar), oxygen (O2), nitrogen (N2), and hydrogen (H2) plasma pretreatments on the adhesion and friction performance of the DLC films deposited on rubber (DLC/rubber). The results indicated that the Ar plasma pretreatment promoted the formation of a compact layer on the rubber surface. By contrast, massive fillers were exposed on the rubber surface after oxygen or nitrogen plasma pretreatments. Moreover, the typical micrometer-scale patches divided by random cracks were observed on the surface of DLC/rubber, except for the sample pretreated with oxygen plasma. The adhesion of DLC/rubber was found to strengthen with the removal of weak boundary layers and the generation of free radicals on the rubber surface after plasma pretreatment. The tribo-tests revealed that DLC/rubber with O2, N2, and H2 plasma pretreatments cannot achieve optimal friction performance. Significantly, DLC/rubber with Ar plasma pretreatment exhibited a low and stable friction coefficient of 0.19 and superior wear resistance, which was correlated to the high adhesion, good load-bearing of the rubber surface, and the approximate sine function of the surface profile of the DLC film.

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Section: Raman Analysis Of Dlc/rubbermentioning

confidence: 99%

Adhesion and friction performance of DLC/rubber: The influence of plasma pretreatment

Chun

Gong

et al. 2021

Friction

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“…Typical D and G peaks of the C-C bonds of DLC films could be observed in the Raman spectra, owing to the breathing mode of A 1g symmetry in aromatic rings and the bond stretching of sp 2 atoms in both aromatic rings and chains, respectively [41]. Typical shoulder D peaks (1,370-1,420 cm −1 ) and asymmetrical G peaks (1,557-1,580 cm −1 ) of carbon crystals, as the characteristic peaks of DLC films, can be obtained [41,42]. The increase in the D peak is an indication of the state of development of the sp 2 phase and indicates that the sp 2 sites begin to organize into small graphitic clusters [43].…”

Section: Film Structure Analysismentioning

confidence: 98%

Effects of annealing treatment on tribological behavior of tungsten-doped diamond-like carbon film under lubrication (Part 2): Tribological behavior under MoDTC lubrication

et al. 2021

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Molybdenum dialkyldithiocarbamate (MoDTC) is widely used as a friction modifier in engine lubricating oil. Under MoDTC lubrication, the friction and wear behaviors of tungsten-doped diamond-like carbon (W-DLC) films annealed at 100–400 °C were discussed and evaluated using scanning electron microscopy (SEM), atomic force microscopy (AFM), and Raman spectroscopy. Under (polymerized alpha olefin) PAO + MoDTC lubrication, the coefficient of friction of all samples decreased, but the wear rates of the W-DLC films annealed at 300 °C increased significantly. By interacting with zinc dialkyldithiophosphate (ZDDP), the wear rates of W-DLC films annealed at different temperatures declined significantly owing to the formation of dense phosphate tribofilms on the worn surfaces.

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“…In addition, the hardness can be adapted to find a compromise between excellent behavior and low friction coefficient [27]. Many transition metals have been tested, for instance, Ti [55][56][57][58][59], Cr [60][61][62], W [63,64], Al [65][66][67], and Cu [68,69]. These metals are often introduced in DLC by coupling a magnetron sputtering discharge to the Low-Frequency enhanced chemical vapor deposition discharge [26].…”

Section: Si Doped Dlcmentioning

confidence: 99%

DLC-Based Coatings Obtained by Low-Frequency Plasma-Enhanced Chemical Vapor Deposition (LFPECVD) in Cyclohexane, Principle and Examples

et al. 2021

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The LFPECVD (Low-Frequency Plasma-Enhanced Chemical Vapor Deposition) technique is now used on an industrial scale for the deposition of carbon-based coatings for several applications. This short review recalled the main principles of LFPECVD and provided examples of DLC-based films. The main differences between low-frequency (LF) and radio-frequency (RF) discharges were also recalled here and examples of deposition and characterization of carbon-based films were proposed. The influence of the bias voltage or the temperature of the active electrode on the deposition rate and the structure of a-C: H films obtained in cyclohexane/hydrogen mixtures was first discussed. Next, the properties of carbon-based films doped with silicon were described and, finally, it was shown that multilayer architectures make it possible to reduce the stresses without altering their tribological properties.

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Further improving the mechanical and tribological properties of low content Ti-doped DLC film by W incorporating

Cited by 50 publications

References 28 publications

Adhesion and friction performance of DLC/rubber: The influence of plasma pretreatment

Adhesion and friction performance of DLC/rubber: The influence of plasma pretreatment

Effects of annealing treatment on tribological behavior of tungsten-doped diamond-like carbon film under lubrication (Part 2): Tribological behavior under MoDTC lubrication

DLC-Based Coatings Obtained by Low-Frequency Plasma-Enhanced Chemical Vapor Deposition (LFPECVD) in Cyclohexane, Principle and Examples

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