Hard multilayer coating, and hard multilayer coated tool including the hard multilayer coating
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United States of America Patent
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May 11, 2010
Grant Date -
May 29, 2008
app pub date -
Sep 7, 2005
filing date -
Sep 1, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A hard multilayer coating including: (a) a backing layer which is to be disposed on a body and which includes a TiAlN layer and a TiAlN+CrN mixture layer that are alternately superposed on each other; and (b) a CrN layer which is disposed on the backing layer and which provides an outer surface of the hard multilayer coating. The hard multilayer coating may further includes (c) an intermediate layer which is interposed between the backing layer and the CrN layer. Also disclosed is a hard multilayer coated tool including a tool substrate as the body which is coated with the hard multilayer coating.
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