Nickel-aluminide based wear resistant material for piston rings
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United States of America Patent
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Jan 4, 2005
Grant Date -
Apr 22, 2004
app pub date -
Sep 3, 2003
filing date -
Mar 27, 2001
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Abstract
A piston ring comprises a coating of a wear-resistant composite composition, particularly intended for high temperature applications. The wear-resistant composite composition comprises a ceramic compound and at least 50 volume %, based on the total volume of the wear-resistant composition, of an intermetallic nickel-aluminide chosen from the group consisting of NiAl and Ni.sub.3 Al. A piston ring comprises a wear-resistant composite composition, particularly intended for high temperature applications. The wear-resistant composite composition comprises a ceramic compound and at least an intermetallic nickel-aluminide chosen from the group consisting of NiAl and Ni.sub.3 Al.
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