Low stress hard coatings and applications thereof

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United States of America Patent

PATENT NO 9168664
APP PUB NO 20150050489A1
SERIAL NO

13969330

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Abstract

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In one aspect, coated cutting tools are described herein. In some embodiments, a coated cutting tool comprises a substrate and a refractory layer deposited by PVD adhered to the substrate, the refractory layer comprising M1−xAlxN wherein x≧0.4 and M is titanium, chromium or zirconium, the refractory layer having a thickness greater than 5 μm, hardness of at least 25 GPa and residual compressive stress less than 2.5 GPa.

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Patent Owner(s)

Patent OwnerAddress
KENNAMETAL INC1600 TECHNOLOGY WAY LATROBE PA 15650

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kumar, Vineet Latrobe, US 66 1346
Leicht, Peter Latrobe, US 7 300
Liu, Yixiong Greensburg, US 58 873
Penich, Ronald Greensburg, US 7 34

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