Title:
piston ring
Document Type and Number:
Japanese Patent JP6333270
Kind Code:
B2
Abstract:
The present application relates to a sliding element, in particular a piston ring, having at least one sliding surface which has a coating which has, from the inside outwards, a metal-containing bonding layer and a DLC layer, where the DLC layer is an amorphous hydrogen-free diamond-like carbon layer which has a DLC main layer which extends from the bonding layer to an adjoining DLC covering layer and has a carbon content of more than about 98.5 at %, oxygen and/or hydrogen and/or nitrogen in a proportion of in each case less than about 0.5 at % and an sp2/sp3 ratio of the carbon in the range from about 1 to about 3, and a DLC covering layer which extends from the DLC main layer to the surface of the sliding element and has a lower carbon content and/or higher oxygen content and/or higher hydrogen content compared to the main layer and also metals and/or metal oxides and an sp2/sp3 ratio of the carbon in the range from about 1 to about 3.
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Inventors:
Kennedy, Marx
Ralph Lammers
Ivanov, Yuri
Zinabolt, michael
Ralph Lammers
Ivanov, Yuri
Zinabolt, michael
Application Number:
JP2015538512A
Publication Date:
May 30, 2018
Filing Date:
October 31, 2013
Export Citation:
Assignee:
FEDERAL-MOGUL BURSCHEID GMBH
International Classes:
F16J9/26; C01B32/05; C23C14/06; F02F5/00
Domestic Patent References:
| JP2000128516A | ||||
| JP2003027214A | ||||
| JP2012062534A | ||||
| JP2009504919A | ||||
| JP2009504448A |
Attorney, Agent or Firm:
Hiroaki Sakai
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