Low-friction sliding member and low-friction sliding mechanism using same
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United States of America Patent
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Aug 10, 2010
Grant Date -
Mar 24, 2005
app pub date -
Aug 5, 2004
filing date -
Aug 21, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A low-friction sliding member such as a piston, a piston ring, a piston skirt section and a cylinder liner section of an internal combustion engine. The low-friction sliding member includes a base material having a surface. A hard carbon thin film is formed at at least a part of the surface of the base material. Here, a tribo-film having at least one functional group selected from the group consisting of ether linkage, oxido and hydroxyl group is formed on the hard carbon thin film when the hard carbon thin film is in slidable contact with an opposite member in presence of an organic oxygen-containing compound.
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