Zobrazeno 1 - 10
of 244
pro vyhledávání: '"Koshi Adachi"'
Autor:
Kazuya Kuriyagawa, Koshi Adachi
Publikováno v:
Tribology Online, Vol 19, Iss 1, Pp 62-73 (2024)
The durability of super-low friction of hydrogenated carbon nitride (CNx:H) coatings sliding against Si3N4 balls in high-vacuum (HV) environments and the phenomena that occur at the interface were clarified. In an HV, CNx:H achieved super-low frictio
Externí odkaz:
https://doaj.org/article/8b58b056be3c46cc83f7a5a5c4ac1fd5
Autor:
Shinya Sasaki, Koshi Adachi
Publikováno v:
Tribology Online, Vol 19, Iss 2, Pp i-i (2024)
There is strong anticipation for contributions from tribology in reducing greenhouse gas emissions from mechanical systems and achieving a carbon-neutral society. Surface texturing has long been implemented as one method to improve tribological prope
Externí odkaz:
https://doaj.org/article/c7f86024e5104de784c21170b06d2740
Autor:
Kento Ihara, Koshi Adachi
Publikováno v:
Tribology Online, Vol 17, Iss 4, Pp 335-347 (2022)
Aluminum alloy sliding components are widely used in internal combustion engines. However, aluminum easily adheres to the countersurface, resulting in high friction. Hence, laser irradiation was used to oxidize the aluminum surface and promote tribof
Externí odkaz:
https://doaj.org/article/45583580fefb4c058349a2f1536cce5e
Publikováno v:
Tribology Online, Vol 17, Iss 1, Pp 1-8 (2022)
The viscosity of motor oil gets lower in order to decrease resistance at region of the fluid lubrication. On the other hands, this causes increasing of friction at the boundary lubrication region. For this reason, it is required to use a friction mod
Externí odkaz:
https://doaj.org/article/f6579809231b40e3afdde465bb44b83e
Autor:
Koki Kanda, Koshi Adachi
Publikováno v:
Tribology Online, Vol 16, Iss 3, Pp 170-177 (2021)
This study aims to clarify the potential of double network (DN) gel to realize low friction coefficient under water lubrication environment. Friction tests were carried out by using DN gel film and silicon carbide (SiC) disk in water. DN gel shows ru
Externí odkaz:
https://doaj.org/article/da2cdea3c706492b8fa7acc674891383
Publikováno v:
Friction, Vol 9, Iss 3, Pp 598-611 (2020)
Abstract Nanodiamond particles (NDPs) have been considered as a potential lubricant additive to various tribological applications, such as water lubrication systems. In this study, the tribological properties of silicon carbide (SiC) lubricated by ND
Externí odkaz:
https://doaj.org/article/9d025e4fe83e48ecba3ffa1b95b195bc
Autor:
Chikara Yamashita, Koshi Adachi
Publikováno v:
Tribology Online, Vol 14, Iss 3, Pp 115-122 (2019)
Conventionally, several reports on quantification of wear of current collecting materials have been published. The objectives of these reports were to predict the wear of current collecting materials in field. However, the measure to reduce the wear
Externí odkaz:
https://doaj.org/article/93b8953be6c5417f8e8cb673cea841bd
Autor:
Chikara Yamashita, Koshi Adachi
Publikováno v:
Tribology Online, Vol 14, Iss 2, Pp 94-101 (2019)
To clarify the wear mechanism of current collecting materials such as a contact wire and a contact strip under electric current condition, it is necessary to clarify temperature distribution around the contact spot. However, the traditional method of
Externí odkaz:
https://doaj.org/article/401ff6403919473cabf2157034001358
Autor:
Chikara Yamashita, Koshi Adachi
Publikováno v:
Tribology Online, Vol 14, Iss 2, Pp 102-108 (2019)
We carried out wear tests with material combination of a hard-drawn copper contact wire and an iron-based sintered alloy contact strip by changing the apparent contact area with four steps to clarify the influence of the apparent contact area on wear
Externí odkaz:
https://doaj.org/article/e64c2ed5ce1a47fea9133c0e2adf00dd
Autor:
Chikara Yamashita, Koshi Adachi
Publikováno v:
Tribology Online, Vol 14, Iss 2, Pp 86-93 (2019)
It is necessary to understand actual phenomena generated at the electric contacts to suggest the design concept for reducing wear of current collectors such as a contact wire and contact strip in an electric railway. However, rotating wear testing me
Externí odkaz:
https://doaj.org/article/fb9eb8277c1b412a8354a5f8842c4043