Structural analysis of a-C:H and a-C:H:Si films under high-pressure and high-temperature by synchrotron X-ray diffraction

Hirayama, Tomoko; Eguchi, Yuri; Saeki, Koichi; Matsuoka, Takashi; Kikegawa, Takumi

doi:10.1016/j.diamond.2016.10.012

Cited by 4 publications

(2 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The appropriate material composition of a-C films plays a crucial role in determining their comprehensive performances. When used as a tribo-couple material, a-C films offer excellent anti-friction and -wear, leading to improved performances and the extended lifespan of a-C films [102,103]. Additionally, their good adhesion to substrates contributes to reduced friction and wear.…”

Section: Materials Composition Of Tribo-couplesmentioning

confidence: 99%

Nanostructure of Superlubricating Tribofilm Based on Friction-Induced a-C:H Films under Various Working Conditions: A Review of Solid Lubrication

Yin,

Mu,

Jia

et al. 2024

Lubricants

View full text Add to dashboard Cite

Diamond-like carbon (DLC) film has gained widespread popularity as a versatile and important solid lubricant material in the field of tribology. Among various types of DLC films, hydrogen-rich DLC (a-C:H) film as a high-performance material has greatly enhanced anti-friction and anti-wear. However, despite its remarkable capabilities, the surface chemical properties and tribological performance of a-C:H film are significantly influenced by the surrounding environment, in special atmospheric conditions. Its super-slip mechanism involves the participation of hydrogen atoms, which can weaken the normal electron number of the outermost layer of a-C:H film. What is more, it is essential to investigate tribofilms in a vacuum or inert gas environment to ascertain the appropriate tribological properties of a-C:H film, which helps in mitigating oxidation effects. When non-doped DLC films are subjected to friction in a dry nitrogen or argon environment, they create sp3-C-rich transfer films on the contact surface, resulting in macroscopic super-slip effects. This paper aims to introduce and discuss the diverse nanostructures of in situ tribofilms in a-C:H film, focusing on the working environment, and explore the prospective application directions of a-C:H film.

show abstract

Section: Materials Composition Of Tribo-couplesmentioning

confidence: 99%

Nanostructure of Superlubricating Tribofilm Based on Friction-Induced a-C:H Films under Various Working Conditions: A Review of Solid Lubrication

Yin,

Mu,

Jia

et al. 2024

Lubricants

View full text Add to dashboard Cite

show abstract

“…For some application, diamond like carbon coatings need to withstand both high temperature (HT) and high pressure (HP). The limited work has been conducted to investigate the stability of DLC coatings under both thermal and pressure conditions [2]. Some interesting synergetic effect of temperature and pressure on the stability of DLC films was revealed [3].…”

Section: Introductionmentioning

confidence: 99%

Pressure effect on bonding of advanced carbon-based coatings under high temperature

Ni,

Liu

2024

Second International Conference on Electrical, Electronics, and Information Engineering (EEIE 2023)

View full text Add to dashboard Cite

The aim of this paper was to systemically study the pressure influence of the bonding of four types of DLC coatings during annealing in high temperatures (HT) and high pressures (HP). The results show that in the two silicon free coatings, Cr2C3 crystal are found to be generated during the argon annealing, but no obvious phase transformation was observed in the two silicon containing coatings when annealed at the same temperature, the sp3 content of HIPped samples is to some extent higher than that of argon annealed samples. The influence of high pressure is more significant on the hydrogenated DLC than on the hydrogen free DLC. Si dopant can inhibit the formation of chromium carbides during the argon and HIP annealing treatment. The hydrogen-free DLC coatings are more stable than the hydrogenated DLC coatings; silicon containing DLC coatings possess a better stability than silicon free DLC coatings. The high pressure can delay the carbon bonding change from sp3 to sp2 or graphitisation. Based on sp3 content, DCr coating (hydrogenated and silicon free coating) was the most unstable coating under both high temperature and high pressure condition, while GCrSi coating (hydrogen-free and silicon containing coating) was the most stable coating.

show abstract

Hydrogen existence state of a hydrogenated amorphous carbon coating and its thermal stability

Peng

Yang

et al. 2019

Diamond and Related Materials

View full text Add to dashboard Cite

Structural analysis of a-C:H and a-C:H:Si films under high-pressure and high-temperature by synchrotron X-ray diffraction

Cited by 4 publications

References 47 publications

Nanostructure of Superlubricating Tribofilm Based on Friction-Induced a-C:H Films under Various Working Conditions: A Review of Solid Lubrication

Nanostructure of Superlubricating Tribofilm Based on Friction-Induced a-C:H Films under Various Working Conditions: A Review of Solid Lubrication

Pressure effect on bonding of advanced carbon-based coatings under high temperature

Hydrogen existence state of a hydrogenated amorphous carbon coating and its thermal stability

Contact Info

Product

Resources

About