Title:
摺動部材及びピストンリング
Document Type and Number:
Japanese Patent JP7396905
Kind Code:
B2
Abstract:
To provide a slide member which can materialize all of excellent heat resistance, low aggression to a mating material, high wear resistance, and a low friction coefficient.SOLUTION: A slide member 100 has a base material 10 and an amorphous carbon film 20 formed on the base material 10, and having a surface 20A being a slide surface. The amorphous carbon film 20 has a component composition containing a hydrogen content in an amount of 3 atom% or less and the remainder composed of carbon, and has a thickness of 3 μm or more. The arithmetic average roughness of the surface 20A of the amorphous carbon film is 0.10 μm or less. A hard region 18A with an indentation hardness of 25 GPa or more, and a soft region 18B with an indentation hardness of 20 GPa or less are mixedly formed on the surface 20A of the amorphous carbon film, and when an area of the hard region 18A on the surface 20A is denoted as A, and an area of the soft region 18B is denoted as B, A/(A+B) is 0.20 or more, and 0.70 or less.SELECTED DRAWING: Figure 1
Inventors:
Kazuya Kameda
Application Number:
JP2020003199A
Publication Date:
December 12, 2023
Filing Date:
January 10, 2020
Export Citation:
Assignee:
Riken Co., Ltd.
International Classes:
F16J9/26; F02F5/00
Domestic Patent References:
| JP2013076466A | ||||
| JP11092935A | ||||
| JP2015193918A |
Foreign References:
| WO2017104822A1 | ||||
| DE102016003036A1 |
Attorney, Agent or Firm:
Kenji Sugimura
Mitsutsugu Sugimura
Keisuke Kawahara
Mitsutsugu Sugimura
Keisuke Kawahara