SURFACE-COATED CUTTING TOOL AND PRODUCTION METHOD THEREFOR

WIPO Patent Application WO/2018/158976

A1

This surface-coated cutting tool includes a base material and a coating formed on the surface thereof, wherein: the coating includes one or more layers; at least one of the layers is an Al-rich layer that contains hard particles; the hard particles have a sodium chloride-type crystal structure and comprise a plurality of aggregated first unit phases and second unit phases that are interposed between the first unit phases; the first unit phases comprise a nitride or a carbonitride of AlxTi1-x; the atomic ratio x of Al in the first unit phases is 0.7-0.96; the second unit phases comprise a nitride or a carbonitride of AlyTi1- y; the atomic ratio y of Al in the second unit phases is not less than 0.5 but less than 0.7; and, when analyzed by an X-ray diffraction method from a direction normal to the surface of the coating, the Al-rich layer has a maximum peak in (220) plane.

PASEUTH ANONGSACK (JP)
KIDO YASUKI (JP)
IMAMURA SHINYA (JP)
KURAMOCHI KOJI (JP)

PCT/JP2017/025247

September 07, 2018

July 11, 2017

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SUMITOMO ELECTRIC HARDMETAL CORP (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)

B23B27/14; B23B51/00; B23C5/16; B23D77/00; B23F21/00; B23G5/06; C23C16/34; C23C16/56

JP2015509858A	2015-04-02
US20160333473A1	2016-11-17
JP2017037377A	2017-02-16
JP2008545063A	2008-12-11
JP2014129562A	2014-07-10

J.TODT ET AL.: "Al-rich cubic A10.8Ti0.2N coating with self-organized nano-lamellar microstructure:Thermal and mechanical properties", SURFACE AND COATINGS TECHNOLOGY, vol. 291, 2016, pages 89 - 93, XP029493081
See also references of EP 3590638A4

FUKAMI PATENT OFFICE, P.C. (JP)

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