Coated Article and Method for Making a Coated Article
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United States of America Patent
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Issued Date -
Jun 9, 2011
app pub date -
Nov 23, 2010
filing date -
Dec 6, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A tool or wear part has a coating formed over a substrate. The coating includes at least one sequence of a ductile nano-layer located between two hard layers, though the coating may have several such sequences created by alternating ductile nano-layers with hard layers, with adjacent sequences sharing a hard layer. The various hard layers may differ in composition from one another, as can the ductile nano-layers. An optional adhesion layer may be provided between the substrate and the sequence, and an optional top layer may be provided over the outermost hard layer. The various layers may be deposited by physical vapor deposition in a single chamber.
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