Sliding element, in particular piston ring, and method for producing the same
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United States of America Patent
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Jun 30, 2020
Grant Date -
Jun 8, 2017
app pub date -
Jul 15, 2015
filing date -
Jul 16, 2014
priority date (Note) -
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Abstract
A sliding element, in particular a piston ring has an outer circumferential running surface of the piston ring, has no nitriding layer, preferable no surface hardening the running surface has as an outermost layer, which differs from the intermediate layer, a DLC layer or a metal-based nitride layer, preferable a metal nitride layer, preferably a CrN layer. Provided between the substrate of the sliding element and the DLC layer there is at least one metal-containing intermediate layer, preferably a metal layer, particularly preferable a chromium layer, and at least one further surface of the sliding element, preferably the piston ring flanks, is surface-hardened, preferably has a nitriding layer.
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