The frictional behavior of DLC films against bearing steel balls and Si3N4 balls in different humid air and vacuum environments

Xia, Libin; Li, Guang

doi:10.1016/j.wear.2007.08.010

Cited by 31 publications

(22 citation statements)

References 30 publications

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“…Furthermore, the shear-induced graphitization [50], which can promote to generate a kind of graphite lubricating transfer films or ''skin'' on the wear scar of mating Si 3 N 4 balls showed in Fig. 7(a), must be the critical factor to the low friction property [51]. From the Raman spectrum of wear scar on the mating Si 3 N 4 ball in ambient showed in Fig.…”

Section: Discussionmentioning

confidence: 99%

Nanocomposite Microstructure and Environment Self-Adapted Tribological Properties of Highly Hard Graphite-Like Film

Wang

et al. 2010

Tribol Lett

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Graphite-like carbon (GLC) nanocomposite films were fabricated by DC magnetron sputtering using high pure graphite target at ambient temperature. Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) investigation showed that the as-deposited GLC films have high concentration of sp 2 -hybridized carbon. High-resolution transmission electron microscopy (HRTEM) images and selected area diffraction patterns (SADP) indicated a complex nanocomposite microstructure of the GLC films. As well as nanocrystalline graphite, a face-center cubic (fcc) diamond with a grain size in the range of 3-8 nm were dispersed in the amorphous carbon matrix inhomogenously and integrally. The nanocomposite GLC film had high hardness of 23 GPa, which was attributed to the mutual strengthening effect of nanoparticles and amorphous matrix. More importantly, the as-deposited nanocomposite GLC film exhibited excellent self-adapted tribological properties in different environments of ambient air, different relative humidity and water. The friction coefficients were 0.053 in ambient air and 0.046 in distilled water, while specific wear rates were 4.5 9 10 -16 m 3 N -1 m -1 and 1.6 9 10 -16 m 3 N -1 m -1 , respectively. The friction regimes and mechanisms in different environments were elaborated. This film is foreseen to high potential in protecting and solid lubricating material in humidity or water environment.

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Section: Discussionmentioning

confidence: 99%

Nanocomposite Microstructure and Environment Self-Adapted Tribological Properties of Highly Hard Graphite-Like Film

Wang

et al. 2010

Tribol Lett

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“…Also the deposited (Cr:N)-DLC film shows a low sp 3 /sp 2 ratio compared with the Cr-DLC. It is known that the hard carbide phase can improve the hardness and the low sp 3 /sp 2 ratio results in the graphitization in the transfer layer [31,32]. Furthermore, the formation of more nitride incorporated in the C network will change the microstructure of DLC film and improve the binding strength between the film and the substrate.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Microstructure and properties of (Cr:N)-DLC films deposited by a hybrid beam technique

Yang

Guo

et al. 2015

Surface and Coatings Technology

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“…Average CoF is about 0.05 in hydrogen. In vacuum, CoF is 0.05 at the initial stage, then increases rapidly to 0.19, decreases to 0.14, and finally increases to around 0.17, which fluctuates typically in vacuum [16]. The low and stable CoF indicates that this friction pair is applicable used to the vacuum environment.…”

Section: Resultsmentioning

confidence: 96%

Ultralow Friction of ZrO2 Ball Sliding against DLC Films under Various Environments

2017

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Ultralow friction is achieved by ZrO 2 as the friction mate material for DLC (Diamond like carbon) films under various environments. Coefficient of friction (CoF) of ZrO 2 /DLC films is as ultra low as 0.02 in ambient air at the temperature of 200 • C, and 0.03, 0.04 and 0.05 in hydrogen, nitrogen and vacuum environments at the temperature of 100 • C, respectively. It is concluded that the transferred films are formed on the worn surface of ZrO 2 ball and amorphous carbon films. Ultralow friction of the friction pair is related with hydrogen, which is derived from DLC films, hydrogen environment or the liberation hydrogen due to hydrothermal oxidation. The ultralow friction mechanism is attributed to the formation of hydrogenated amorphous carbon films on ZrO 2 ball and the shielding action of hydrogen from DLC films and the transferred films simultaneously.

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The frictional behavior of DLC films against bearing steel balls and Si3N4 balls in different humid air and vacuum environments

Cited by 31 publications

References 30 publications

Nanocomposite Microstructure and Environment Self-Adapted Tribological Properties of Highly Hard Graphite-Like Film

Nanocomposite Microstructure and Environment Self-Adapted Tribological Properties of Highly Hard Graphite-Like Film

Microstructure and properties of (Cr:N)-DLC films deposited by a hybrid beam technique

Ultralow Friction of ZrO2 Ball Sliding against DLC Films under Various Environments

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