The tribological performance in vacuum of DLC coating treated with graphene spraying top layer

Shi, Jiadong; Guo, Ma; Wang, Haidou; Li, Guolu; Wei, Aobo; Liu, Yunfan; Yong, Qingsong

doi:10.1016/j.diamond.2022.108998

Cited by 9 publications

(3 citation statements)

References 30 publications

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“…The UV irradiation initiated the increase in crystallization of MoS 2 and sp 3 content of DLC films, increase in sp 3 content results in increase in rigidity and strength of the carbon network by crosslinking, which improves the wear strength, which was confirmed on the basis of the Raman spectra and XPS analysis. Jiadong et al [128] prepared the graphene/DLC coating and tested it in vacuum atmosphere, it was observed that 3 times brush coating of graphene layer over DLC reduces the friction and wear by 4 and 33%, respectively. It ascribes to the encapsulation of abrasive wear debris by graphene sheets, which reduces friction and further abrasion.…”

Section: Hybrid Coatingmentioning

confidence: 99%

The state of art on lubrication methods in space environment

Nautiyal,

Singh,

Gautam

et al. 2024

Phys. Scr.

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Space tribology is a very big aspect of space exploration, despite of this fact, there is a dearth of coherent and concise literature available in the field of space tribology. It becomes difficult to understand the tribological behaviour of mating bodies under the extreme environmental circumstances in space due to their potential chemical and physical interactions. The radiation, vacuum, environmental conditions and temperature, are the factors which affects the friction and wear behaviour of mating surfaces and may alter the chemical structure of solid or liquid lubricant. The combination of tribo-physical and tribo-chemical interactions makes the tribological analysis very difficult to understand. The lack of understanding and ignorance might be the reason for not addressing this issue in the past. This review contains the qualitative and quantitative information on the tribological behaviour of different types of liquid lubricants, greases, soft and hard coatings, combined lubrication systems, testing equipment, composites, solid lubricants and alloys developed for space applications.

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Section: Hybrid Coatingmentioning

confidence: 99%

The state of art on lubrication methods in space environment

Nautiyal,

Singh,

Gautam

et al. 2024

Phys. Scr.

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“…Graphene possesses outstanding tribological properties and has been applied as an additive or dopant to meet applications in harsh conditions [74][75][76]. Shi et al [77] prepared graphene/DLC coating by spraying graphene solution onto DLC surface. According to the friction, the excellent tribological performance of graphene/DLC coating should contribute to the nonpublic accumulation of graphene flakes at the interface and the 'micro-carrying' formed by the graphene flakes wrapped by wear debris during the friction process.…”

Section: Dlc Film Composited With Traditional Lubricantsmentioning

confidence: 99%

A review on diamond-like carbon-based films for space tribology

Shi

Liu

et al. 2022

Materials Science and Technology

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Space solid lubricants should undergo serious tests, such as high pressure, high vacuum, strong radiations and so on. Diamond-like carbon (DLC) films show potential applications in space because of low friction in vacuum. However, the short sliding lifetime should be a critical issue, and many methods are used to improve it. This paper highlights the development and broad potential of DLC films with special structures used in vacuum. The frictional behaviours of DLC-based films in other space conditions, such as radiation and extreme temperatures, are also addressed. Furthermore, the tribological performances and related mechanisms under different environments are discussed. Finally, some open issues concerning space applications are discussed.

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“…Owing to the formation of a protective transferred layer, the wear rate decreased as the load increased. Jiadong et al [14] improved the tribological properties of DLC films by adding a graphite film, which was prepared using a spraying technique.…”

Section: Introductionmentioning

confidence: 99%

Novel Tribometer for Coated Self-Lubricating Spherical Plain Bearings in a Vacuum

Zhang

Yong

et al. 2022

Lubricants

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Coated self-lubricating spherical plain bearings (SSPBs) are a fairly key component of the space-swing mechanism. To examine the operation status and tribological properties of coated SSPBs, a tribometer with a temperature control module in a vacuum condition was developed. The tribometer was mainly composed of a fixture system, reciprocating rotational motion system, environment control system, etc. First, the tribometer was verified with the self-made hydrogenated diamond-like carbon (H-DLC) SSPBs. The sensor signals indicated that the tribometer conformed to the design specifications. Then, the influence of friction heat on the tribological properties of H-DLC SSPBs was analyzed. The results showed that friction torque and temperature increased with the overall test time. Although the temperature had reached 48 °C, the frictional heat had little effect on the H-DLC SSPBs’ lifespans. The damage mechanism of H-DLC SSPBs was dominated by abrasive wear and fatigue wear in vacuum conditions.

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The tribological performance in vacuum of DLC coating treated with graphene spraying top layer

Cited by 9 publications

References 30 publications

The state of art on lubrication methods in space environment

The state of art on lubrication methods in space environment

A review on diamond-like carbon-based films for space tribology

Novel Tribometer for Coated Self-Lubricating Spherical Plain Bearings in a Vacuum

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