New in situ superlow-friction method for nitrogen-containing diamond-like carbon coatings using dielectric barrier discharge treatment in ambient air

W Wu, M Murashima, T Saso, T Tokoroyama… - Tribology …, 2022 - Elsevier
In the present paper, we develop a new in situ surface treatment technology for diamond-like
carbon (DLC) coatings using dielectric barrier discharge (DBD) in ambient air. The friction …

[PDF][PDF] Relationship between deformation and running-in wear on hard-on-hard bearings from metal, ceramic, and diamond materials for total hip prosthesis

MI Ammarullah, T Hidayat, MDP Lamura, J Jamari - Jurnal Tribologi, 2023 - academia.edu
It is widely recognized that the total hip prosthesis is one of the most successful applications
of biomaterials in the medical industry (Australian Orthopaedic Association National Joint …

Long-term low-friction of Ti-overcoated and-doped DLCs: Robustly developed carbonous transfer layer with titanium

JI Kim, WY Lee, T Tokoroyama, N Umehara - Carbon, 2023 - Elsevier
Diamond-like carbon (DLC) has been under the research spotlight as an exceptional solid
lubricant. Its friction performance is depending on a well-developed transfer layer upon its …

New in situ low-friction technology for diamond-like carbon coatings using surface discharge treatment in ambient air

M Murashima, S Oyama, H Kousaka, T Tokoroyama… - Tribology …, 2022 - Elsevier
In the present paper, we develop a new in situ low-friction technology for diamond-like
carbon coatings using surface discharge in ambient air. As a result, the friction coefficient …

Tribological property of ta-CNx: Ta deposited via ion beam assisted-filtered arc deposition

T Tokoroyama, Y Tagami, M Murashima, WY Lee… - Tribology …, 2022 - Elsevier
Improving the hardness of amorphous carbon nitride with tantalum was realized by using ion
beam assisted filtered arc deposition to obtain a low friction coefficient and low specific wear …

Effect of defects on wear behavior in ta-C coating prepared by filtered cathodic vacuum arc deposition

WY Lee, YJ Jang, T Tokoroyama, M Murashima… - Diamond and Related …, 2020 - Elsevier
This study examined the tribological behavior of a ta-C coating fabricated at a substrate bias
of− 100 V via filtered cathodic vacuum arc (FCVA) deposition. Defects in the ta-C coating …

Clarification of the effects of adsorption films of ester-blended oil on friction by in situ reflectance spectroscopy

K Hirata, M Murashima, N Umehara, T Tokoroyama… - Tribology …, 2023 - Elsevier
In recent years, the demand for friction reduction in oil lubrication systems has become
increasingly important due to the need to improve fuel economy and achieve carbon …

[HTML][HTML] Carbon-based coatings for suppression of silica adhesion in geothermal power generation

Y Nakashima, N Umehara, H Kousaka… - Tribology …, 2023 - Elsevier
Geothermal steam, the power source in geothermal power generation, contains a large
amount of silica. Silica adhesion on geothermal power generator equipment hinders stable …

Nitrogen-containing diamond-like carbon deposited on glass substrate via filtered cathodic vacuum arc with high-frequency pulsed DC substrate bias

JI Kim, WY Lee, K Tanaka, T Tokoroyama… - Surfaces and …, 2024 - Elsevier
This research investigates the properties of nitrogen-containing diamond-like carbon (N-
DLC) coatings deposited on glass substrate using a high-frequency pulsed-DC substrate …

[HTML][HTML] Microstructure, mechanical properties and low-temperature tribological behavior of Cr/Cr-W/W-DLC/DLC multilayer coatings on 5A06 Al alloy

T Ye, J Ma, Z Jia, T Li, W Liu, W Yu - Journal of Materials Research and …, 2022 - Elsevier
In this study, the Cr/Cr-W/W-DLC/DLC multilayer coating was deposited on 5A06 Al alloy
using a combination of unbalanced magnetron sputtering system and filter cathode vacuum …