Title:
SLIDING MEMBER AND PISTON RING
Document Type and Number:
WIPO Patent Application WO/2020/209133
Kind Code:
A1
Abstract:
Provided is a sliding member having a hard coating with excellent heat resistance and oxidation resistance even in high-temperature environments in the air. This sliding member 100 comprises: a substrate 10; and an amorphous carbon film 20 which is formed on the substrate 10, the surface 20A of the amorphous carbon film acting as a sliding surface. The amorphous carbon film 20 is characterized by having a constituent composition containing at least 2 atm% but no more than 20 atm% of silicon, at least 2 atm% but no more than 15 atm% of boron, and at least 0 atm% but less than 15 atm% nitrogen, with the remainder being made up of carbon, and essentially free of hydrogen, while the total quantity of silicon and boron is at least 5atm% but no more than 35 atm%.
Inventors:
DENG XINGRUI (JP)
Application Number:
PCT/JP2020/014667
Publication Date:
October 15, 2020
Filing Date:
March 30, 2020
Export Citation:
Assignee:
KK RIKEN (JP)
International Classes:
C23C14/06; F16C17/02; F16C33/12; F16J9/26
Domestic Patent References:
| WO2016021671A1 | 2016-02-11 | |||
| WO2017104822A1 | 2017-06-22 |
Foreign References:
| JP2012530188A | 2012-11-29 |
Other References:
PARK CHANG-SUN; CHOI SUN GYU; JANG JIN-NYOUNG; HONG MUNPYO; KWON KWANG-HO; PARK HYUNG-HO: "Effect of boron and silicon doping on the surface and electrical properties of diamond like carbon films by magnetron sputtering technique", SURFACE AND COATINGS TECHNOLOGY, vol. 231, 14 January 2012 (2012-01-14), pages 131 - 134, XP028697133, ISSN: 0257-8972, DOI: 10.1016/j.surfcoat.2012.01.014
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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