Deposition and Tribology of Carbon and Boron Nitride Nanoperiod Multilayer Hard and Solid Lubricating Films

Miyake, Shojiro; Wang, Mei

doi:10.5772/15806

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…The hardness values of the MoS 2 films were given in Table 2. Oxygen diffusion layers obtained after thermal oxidation are an alternative surface modification technique for the material, and as a result of the researches carried out to explore the hardening process with oxygen diffusion, it was determined that the thickness of the oxygen‐containing diffusion layer increases with the increase in oxidation temperature or time, and therefore the hardness values increase 23 . A similar situation was obtained in this study as well.…”

Section: Resultssupporting

confidence: 83%

“…Oxygen diffusion layers obtained after thermal oxidation are an alternative surface modification technique for the material, and as a result of the researches carried out to explore the hardening process with oxygen diffusion, it was determined that the thickness of the oxygen-containing diffusion layer increases with the increase in oxidation temperature or time, and therefore the hardness values increase. 23 A similar situation was obtained in this study as well. The highest hardness value was obtained as 655 HV in the film subjected to thermal oxidation at 400 C, and the lowest hardness value was obtained as 345 HV in the untreated MoS 2 film.…”

Section: Mechanical Propertiessupporting

confidence: 90%

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Effect of thermal oxidation on structural and tribological properties of MoS₂ films

Çiçek

Gözübüyük

Efeoğlu

2022

Lubrication Science

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The aim of this study is to investigate the structural, mechanical and tribological behaviours of thermally oxidized MoS 2 films. MoS 2 coatings were deposited on D2 tool steel substrates using the closed field unbalanced magnetron sputtering method (CFUBMS). The thermal oxidation process was carried out at four different temperatures. Tribological properties were determined by pinon-disc wear tests in the atmospheric environment. It was determined that thermal oxidation temperatures affected the chemical composition of MoS 2 films, but did not cause any change in film thickness. The wear rates of the samples differed depending on the oxidation temperature and the applied load.The lowest wear rate was determined as 1.97 Â 10 À8 mm 3 /Nm in the oxidized film at 350 C. In addition, the highest hardness value was obtained as 655 HV in the film oxidized at 400 C, and the lowest coefficient of friction was obtained as 0.01 in the film oxidized at 350 C.

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Section: Resultssupporting

confidence: 83%

Section: Mechanical Propertiessupporting

confidence: 90%

Effect of thermal oxidation on structural and tribological properties of MoS₂ films

Çiçek

Gözübüyük

Efeoğlu

2022

Lubrication Science

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“…The best tribological results were obtained for 20vol% of h-BN at a sintering temperature of 1200 °C, which is slightly higher than its melting point of 1250 °C. Avril et al, [ 155 ] examined α-Fe (Cr)-h-BN and α-Fe (Cr)-Fe 2 B-FeB films generated on X30Cr13 stainless steel by a laser-melting process that showed an improvement in the tribological properties with the addition of h-BN [ 156 , 157 ]. Miyake et al, [ 158 ] investigated the effects of multilayers (C/BN) n films with thickness in nanometric range that were produced by RF sputtering and found the layer thickness of 4 nm showed the lowest friction coefficient of 0.1 at 25 °C.…”

Section: Transition Metal Sulfides and Di-selenidesmentioning

confidence: 99%

Tribological Properties of 2D Materials and Composites—A Review of Recent Advances

2021

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This paper aims to provide a theoretical and experimental understanding of the importance of novel 2D materials in solid-film lubrication, along with modulating strategies adopted so far to improve their performance for spacecraft and industrial applications. The mechanisms and the underlying physics of 2D materials are reviewed with experimental results. This paper covers some of the widely investigated solid lubricants such as MoS2, graphene, and boron compounds, namely h-BN and boric acid. Solid lubricants such as black phosphorus that have gained research prominence are also discussed regarding their application as additives in polymeric materials. The effects of process conditions, film deposition parameters, and dopants concentration on friction and wear rate are discussed with a qualitative and quantitative emphasis that are supported with adequate examples and application areas and summarized in the form of graphs and tables for easy readability. The use of advanced manufacturing methods such as powder metallurgy and sintering to produce solid lubricants of superior tribological performance and the subsequent economic gain from their development as a substitute for liquid lubricant are also evaluated.

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“…Haojie S. et al suggested that due to good dispersion stability and extremely thin laminated structure, MoS 2 /graphene oxide composites prevent contact between rough surfaces by filling microroughness. Similarly, Miyake and Wang showed that a 4 nm carbon/boron nitride multilayer film gives a better coefficient of friction along with hardness. Pooley and Tabor reported PTFE as a low coefficient of friction (COF, value near to 0.2) thermoplastic, and it has been used extensively in various applications.…”

Section: Introductionmentioning

confidence: 99%

Upcycling of Spent Lithium Cobalt Oxide Cathodes from Discarded Lithium-Ion Batteries as Solid Lubricant Additive

Parikh

Ahmadi

Parekh

et al. 2019

Environ. Sci. Technol.

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This work provides an alternative solution to the challenge of battery recycling via the upcycling of spent lithium cobalt oxide (LCO) as a new promising solid lubricant additive. An advanced solid lubricant mixture of graphene, Aremco binder, and recycled LCO was formulated into a spray with the use of excess volatile organic solvent. Numerous flat steel disks were spray-coated with the new lubricant formulation and naturally dried followed by curing at 180 °C. When tested on a ball-on-disk up to 230 m in distance, the composite new solid lubricant reduced the coefficient of friction (COF) by 85% between two steel surfaces compared to unlubricated surfaces under a constant 1 GPa Hertzian pressure in an ambient environment. The tribofilm composition, particle size, and type of contact are identified as important parameters in the improvement of the COF. Scanning electron microscopy was used to study its morphology, and energy dispersive X-ray spectroscopy was used to analyze the composition of pristine and tested tribofilms. Upcycled spent low value LCO powder was used as a lubricant additive in tribology for the first time with exceptional lubricious properties.

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Deposition and Tribology of Carbon and Boron Nitride Nanoperiod Multilayer Hard and Solid Lubricating Films

Cited by 3 publications

References 9 publications

Effect of thermal oxidation on structural and tribological properties of MoS₂ films

Effect of thermal oxidation on structural and tribological properties of MoS₂ films

Tribological Properties of 2D Materials and Composites—A Review of Recent Advances

Upcycling of Spent Lithium Cobalt Oxide Cathodes from Discarded Lithium-Ion Batteries as Solid Lubricant Additive

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Deposition and Tribology of Carbon and Boron Nitride Nanoperiod Multilayer Hard and Solid Lubricating Films

Cited by 3 publications

References 9 publications

Effect of thermal oxidation on structural and tribological properties of MoS2 films

Effect of thermal oxidation on structural and tribological properties of MoS2 films

Tribological Properties of 2D Materials and Composites—A Review of Recent Advances

Upcycling of Spent Lithium Cobalt Oxide Cathodes from Discarded Lithium-Ion Batteries as Solid Lubricant Additive

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Product

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Effect of thermal oxidation on structural and tribological properties of MoS₂ films

Effect of thermal oxidation on structural and tribological properties of MoS₂ films