Cutting Tool Coated with a Diamond-Like Carbon Multilayer
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United States of America Patent
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Issued Date -
Nov 25, 2010
app pub date -
May 13, 2010
filing date -
May 25, 2009
priority date (Note) -
Abandoned
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Abstract
A coated cutting tool is at least partially coated with a diamond-like carbon (DLC) multilayer of alternating DLC layers and metal nanolayers sandwiched between the DLC layers. The nanolayer comprises a metal or a metal alloy comprising two or more elements selected from of groups IVB, VB, VIB of the periodic table, Al, and Si. Each DLC layer has a thickness of at least 0.2 microns thick and the coating has a thickness of from about 0.5 microns to about 30 microns.
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