Metal cutting tool with multi-layer coating

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United States of America Patent

PATENT NO 11104986
APP PUB NO 20200181756A1
SERIAL NO

16614408

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Abstract

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A metal cutting tool includes a main body made of cemented carbide, cermet, ceramic, steel or high-speed steel, and a multi-layer wear protection coating. The wear protection coating includes a lower layer having an overall composition of Tim Al(1-m) N with 0.25a Al(1-a) N with 0.45≤a≤0.55 and a thickness of 1 nm to 10 nm. The upper layer has 30 to 400 triples of alternately stacked sub-layers in a sequence (C-D-E-C-D-E- . . . ). The sub-layers of the upper layer have a composition Tix AlySizN with x+y+z=1 and 0.20≤x≤0.45, 0.20≤y≤0.45 and 0.20≤z≤0.45 and a thickness of 1 nm to 10 nm.

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Patent Owner(s)

Patent OwnerAddress
WALTER AG72072 TÜBINGEN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Albers, Ulrich Starzach-Borstingen, DE 4 18

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