Coated cemented carbide cutting tool
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United States of America Patent
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Aug 11, 1987
Grant Date -
N/A
app pub date -
Oct 11, 1985
filing date -
Oct 11, 1985
priority date (Note) -
Expired
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Abstract
The present invention is directed to a triple coated cemented hard metal carbide product in which a cemented metal carbide substrate is coated with, first, a metal carbide coating to promote coating adherence to the substrate, secondly, a metal nitride or carbonitride coating to promote crater wear resistance and, thirdly, a metal carbide outer layer to promote flank flank wear resistance in order to protect the cemented metal carbide substrate from corrosive atmosphere and abrasion due to frictional flank wear.
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