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:
Dec. 17, 2024
Filed:
Dec. 14, 2018
Applicant:
Ntn Corporation, Osaka, JP;
Inventors:
Assignee:
NTN CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 9/40 (2006.01); F16C 33/12 (2006.01); C22C 14/00 (2006.01);
U.S. Cl.
CPC ...
F16C 33/121 (2013.01); C21D 9/40 (2013.01); C22C 14/00 (2013.01); F16C 2204/42 (2013.01);
Abstract
A mechanical component according to one aspect of the present invention is made of a titanium alloy and has a surface. The mechanical component includes a plurality of primary α crystal grains and a plurality of secondary α crystal grains. At the surface of the mechanical component the primary α crystal grains have an area ratio of 10% or more and 30% or less. At the surface of the mechanical component the secondary α crystal grains have a major diameter of 75 μm or less and a minor diameter of 10 μm or less. At the surface of the mechanical component 1% by mass or more of oxygen is included.