Surface-coated cutting tool

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 10569339
APP PUB NO 20180021858A1
SERIAL NO

15545182

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Abstract

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In a surface-coated cutting tool, a hard coating includes one or more layers. At least one layer thereof is a hard coating layer composed of a complex nitride or carbonitride layer of Al, Cr, and Si and satisfying (Al1-x-yCrxSiy)(CzN1-z) where x, y and z are atomic ratios and satisfy 0.1≤x≤0.4, 0.01≤y≤0.2, and 0≤z≤0.3, respectively. The hard coating layer contains particles including: less than 10 atomic % of non-metal components selected from C and N; and metal components selected from Cr, Al and Si. In the cross-section perpendicular to the tool body surface, the number ratio of oblate particles with an Al content of 50 atomic % or less, a long diameter of less than 0.5 μm, and an aspect ratio of 2.0 or more is 90% or more with respect to the total number of the particles.

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Patent Owner(s)

  • MITSUBISHI MATERIALS CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hashimoto, Tatsuo Akashi, JP 11 41
Ogami, Tsuyoshi Naka, JP 8 7
Senbokuya, Kazuaki Naka, JP 4 10
Takahashi, Masakuni Ogaki, JP 11 57

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