METHOD FOR COATING AT LEAST THE INNER FACE OF A PISTON RING AND PISTON RING
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United States of America Patent
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Issued Date -
May 30, 2013
app pub date -
Feb 17, 2011
filing date -
Mar 9, 2010
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Abstract
In a method for coating at least part of the inner face of a piston ring, said ring preferably consisting of cast iron or steel, a PVD and/or DLC coating is applied by means of at least one of the following methods: PA-CVD, glow discharge and/or HIPIMS. A piston ring has a coating that is formed at least on part of the inner face of said ring, said coating being a PVD and/or DLC coating that preferably has been applied by means of PA-CVD, glow discharge and/or HIPIMS.
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