Title:
PISTON RING
Document Type and Number:
WIPO Patent Application WO/2014/088096
Kind Code:
A1
Abstract:
In order to provide a multilayer hard-film-coated piston ring which can be used in engines in an environment where high mechanical and thermal burdens are imposed and which is excellent in terms of scuffing resistance, wear resistance, and unsusceptibility to coating film separation, a multilayer hard film which comprises a coating film comprising alternately superposed layers of at least two different compounds, the compound layers each comprising a nitride of at least one metal selected from the group consisting of Ti, Cr, Zr, V, Hf, and Al, is deposited on the peripheral surface of a piston ring in a film thickness of 10-60 μm.
Inventors:
SATO MASAYUKI (JP)
MURAYAMA YUUICHI (JP)
IWAMOTO YOUHEI (JP)
MURAYAMA YUUICHI (JP)
IWAMOTO YOUHEI (JP)
Application Number:
PCT/JP2013/082830
Publication Date:
June 12, 2014
Filing Date:
December 06, 2013
Export Citation:
Assignee:
RIKEN KK (JP)
International Classes:
F16J9/26; C23C14/06; F02F5/00
Foreign References:
| JP2007278314A | 2007-10-25 | |||
| JPH11335813A | 1999-12-07 | |||
| JP2005060810A | 2005-03-10 | |||
| JP2010529389A | 2010-08-26 | |||
| JP2005082822A | 2005-03-31 | |||
| JP2000274531A | 2000-10-03 | |||
| JP2007132423A | 2007-05-31 | |||
| JP2002003976A | 2002-01-09 | |||
| JPH08312779A | 1996-11-26 | |||
| JP2005187859A | 2005-07-14 | |||
| JP2005082822A | 2005-03-31 | |||
| JP2007278314A | 2007-10-25 |
Other References:
TAKESHI OKI, SURFACE TECHNOLOGY, vol. 41, no. 5, 1990, pages 462 - 470
HIROSHI ICHIMURA; YOSHIO ISHII, SURFACE TECHNOLOGY, vol. 52, no. 1, 2001, pages 110 - 115
HIROSHI ICHIMURA; YOSHIO ISHII, SURFACE TECHNOLOGY, vol. 52, no. 1, 2001, pages 110 - 115
Attorney, Agent or Firm:
TAKAISHI Kitsuma (JP)
Kitsuma Takaishi (JP)
Kitsuma Takaishi (JP)
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