Title:
piston ring
Document Type and Number:
Japanese Patent JP6339784
Kind Code:
B2
Abstract:
To provide a piston ring having a hard laminate coating having excellent scuffing resistance, wear resistance and peeling resistance, which can be used in an environment of high mechanical and thermal load in engines, the piston ring is provided on its outer peripheral sliding surface with a CrN-type hard coating as thick as 10-60 µm and comprising a CrN/CrCN laminate coating having hardness Hv of 1000 or more and residual compression stress of 1500 MPa or less, a laminate unit composed of a CrN layer and a CrCN layer being as thick as 30 nm or more; the CrN/CrCN laminate coating being formed by alternately laminating CrN layers and CrCN layers containing C dissolved in CrN by ion plating.
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| JP2001116145 | PISTON RING |
Inventors:
Masayuki Sato
Yuichi Murayama
Youhei Iwamoto
Takuma Sekiya
Yuichi Murayama
Youhei Iwamoto
Takuma Sekiya
Application Number:
JP2013203425A
Publication Date:
June 06, 2018
Filing Date:
September 30, 2013
Export Citation:
Assignee:
Riken Co., Ltd.
International Classes:
F16J9/26; B24B5/00; C23C14/06; F02F5/00
Domestic Patent References:
| JP4839120B2 | ||||
| JP2011045970A | ||||
| JP2005060810A | ||||
| JP11335813A | ||||
| JP2007290067A | ||||
| JP6010454B2 |
Foreign References:
| WO2008059791A1 |
Attorney, Agent or Firm:
Takaishi Tachibana