Cutting tool
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United States of America Patent
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Oct 11, 1988
Issued Date -
N/A
app pub date -
Jul 9, 1987
filing date -
Jun 21, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A cutting tool, in particular of hard metal, which is coated with hard layers of titanium carbide, titanium carbonitride and/or titanium nitride and that has an outer thin layer of zirconium nitride. The thickness of this outer layer of zirconium nitride amounts to between 1 and 30%, preferably 1 to 10%, of the thickness of the base coating of titanium carbide, titanium carbonitride and/or titanium nitride.
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