Effect of graphite target power density on tribological properties of graphite-like carbon films

Dong, Dan; Jiang, Bailing; Li, Hongtao; Du, Yuzhou; Yang, Chao

doi:10.1016/j.apsusc.2018.01.113

Cited by 28 publications

(19 citation statements)

References 55 publications

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“…In recent years, GLC films deposited on different substrates by various techniques have been widely investigated, revealing a striking difference in their mechanical and tribological properties [2,[9][10][11][12]. One of the reasons could be attributed to the diversity of the internal structure of GLC samples, where the sp 3 hybrid carbon atoms were commonly considered to be responsible for the high hardness and the rich sp 2 bond structure were reported to demonstrate an excellent wear resistance [13].…”

Section: Introductionmentioning

confidence: 99%

“…One of the reasons could be attributed to the diversity of the internal structure of GLC samples, where the sp 3 hybrid carbon atoms were commonly considered to be responsible for the high hardness and the rich sp 2 bond structure were reported to demonstrate an excellent wear resistance [13]. Deposition parameters such as target currents [10], substrate bias [14,15] and power densities [9,15,16], are the most common adjustable variables used to optimize the structure and properties of amorphous carbon films. For example, Wang et al [10] reported that the relative content of sp 2 and sp 3 hybridisation (ID/IG) changed from 1.5 to 3.0 with the increase of target current from 0.4 A to 2.0 A, while the hardness and film compactness decreased.…”

Section: Introductionmentioning

confidence: 99%

“…Deposition parameters such as target currents [10], substrate bias [14,15] and power densities [9,15,16], are the most common adjustable variables used to optimize the structure and properties of amorphous carbon films. For example, Wang et al [10] reported that the relative content of sp 2 and sp 3 hybridisation (ID/IG) changed from 1.5 to 3.0 with the increase of target current from 0.4 A to 2.0 A, while the hardness and film compactness decreased. They proposed the microstructure and mechanical property evolutions resulted in the different tribological performances of the as-deposited GLC films.…”

Section: Introductionmentioning

confidence: 99%

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Tribological performance of graphite-like carbon films with varied thickness

Shi

Liskiewicz

Beake

et al. 2020

Tribology International

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Graphite-like carbon (GLC) films with different thickness were deposited on 316L stainless steel using closed field unbalanced magnetron sputtering system to investigate the influence of film thickness on the microstructure, mechanical and tribological properties. The results showed that the surface of the deposited films exhibits granularlike morphology, the sp 2 content, surface roughness increase with the increase of film thickness, leading to the lower of hardness and higher of the internal stress. Both of the of friction curves obtained by nano-tribological tests and fretting wear experiments revealed a three-stage evolution tendency with the same wear mechanism for the first two stages. The intermediate thickness GLC film had the lowest specific wear rate, whilst the fretting fatigue life increased with film thickness.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tribological performance of graphite-like carbon films with varied thickness

Shi

Liskiewicz

Beake

et al. 2020

Tribology International

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“…Baptista et al [10] investigated the effect of high content graphite on the tribological and mechanical behavior of epoxy-based composites, suggesting that an increase in graphite filler could reduce the fatigue-related wear experienced by epoxy resin. Other types of graphite have also been studied, but are not the focus of this particular paper [11].…”

Section: Introductionmentioning

confidence: 99%

Comparative tribological behavior of friction composites containing natural graphite and expanded graphite

Jin

Zhou

et al. 2019

Friction

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In this study, expanded graphite and natural graphite were introduced into resin-based friction materials, and the tribological behavior of the composites was investigated. The tribo-performance of the two friction composites was evaluated using a constant speed friction tester. The results showed that the expanded graphite composite (EGC) displayed better lubricity in both the fading and the recovery processes. The wear rate of the EGC decreased by 22.43% more than that of the natural graphite composite (NGC). In the fading process, and the EGC enhanced the stability of the coefficient of friction. The recovery maintenance rate of the NGC was 4.66% higher than that of the EGC. It can be concluded that expanded graphite plays an important role in the formation of a stable contact plateau and can effectively reduce the wear.

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“…[1,2] Due to its layered structure graphite-like carbon films have been used in various applications to enhance the tribological properties of materials. [3] In addition graphite composite materials are known to have improved mechanical properties and are broadly used in nanotechnology improved building materials. [4][5][6] Another commercial use of graphite is in pencil leads where different proportions of clay determine the hardness (e.g., ... 2H, H, F, HB, B, 2B, ...) as it can flake with relatively small mechanical force and decorate a paper.…”

Section: Introductionmentioning

confidence: 99%

Study of a rhombohedral graphite X-ray filter using the sphere-in-contact model

Zeinalipour-Yazdi

Pullman

2019

Chemical Physics Letters

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We have studied with the sphere-in-contact model the structure of rhombohedral graphite and found that there are molecular channels 22.7 degrees with respect to the material symmetry axis. We show via theoretical simulations with the Laue equation, Kramers equation and Duane-Hunt law that Xray radiation (λ < 1.34 Å) that is traveling along these molecular channels would have a larger meanfree-path. This suggests that stacks of rhombohedral graphite can become effective filters for X-ray sources, such as the ones used in Laue photography and other X-ray techniques that use Bremsstrahlung.

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Effect of graphite target power density on tribological properties of graphite-like carbon films

Cited by 28 publications

References 55 publications

Tribological performance of graphite-like carbon films with varied thickness

Tribological performance of graphite-like carbon films with varied thickness

Comparative tribological behavior of friction composites containing natural graphite and expanded graphite

Study of a rhombohedral graphite X-ray filter using the sphere-in-contact model

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