The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 2021
Filed:
Jun. 30, 2017
Applicant:
Mitsubishi Hitachi Tool Engineering, Ltd., Tokyo, JP;
Inventors:
Yuuzoh Fukunaga, Narita, JP;
Masayuki Imai, Narita, JP;
Assignee:
Moldino Tool Engineering, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B23B 27/14 (2006.01); C23C 16/34 (2006.01); B23C 5/16 (2006.01); C23C 16/455 (2006.01);
U.S. Cl.
CPC ...
C23C 16/34 (2013.01); B23B 27/14 (2013.01); B23B 27/148 (2013.01); B23C 5/16 (2013.01); C23C 16/455 (2013.01); C23C 16/45563 (2013.01); B23B 2224/24 (2013.01);
Abstract
A hard coating comprising a lower layer formed by an fcc-based titanium aluminum nitride coating, and an upper layer formed by an aluminum nitride coating having an hcp crystal system, the upper layer having a columnar crystal structure, the columnar crystals having an average transverse cross section diameter of 0.05-0.6 μm, and a ratio of an X-ray diffraction peak value Ia(002) of (002) planes to an X-ray diffraction peak value Ia(100) of (100) planes in the upper layer meeting the relation of Ia(002)/Ia(100)≥6.