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:
Mar. 21, 2017
Filed:
Feb. 22, 2012
Yuichiro Shimizu, Tokyo, JP;
Atsushi Kobayashi, Saitama, JP;
Susumu Maeda, Saitama, JP;
Masao Kanayama, Tokyo, JP;
Kiyotaka Akimoto, Tokyo, JP;
Yuichiro Shimizu, Tokyo, JP;
Atsushi Kobayashi, Saitama, JP;
Susumu Maeda, Saitama, JP;
Masao Kanayama, Tokyo, JP;
Kiyotaka Akimoto, Tokyo, JP;
DOWA THERMOTECH CO., LTD., Tokyo, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
The present invention provides a nitrided steel member and manufacturing method thereof. the nitrided steel member including: an iron nitride compound layer formed on a surface of a steel member made of carbon steel for machine structural use or alloy steel for machine structural use, in which with regard to X-ray diffraction peak intensity IFeN (111) of the (111) crystal plane of FeN and X-ray diffraction peak intensity IFeN (111) of the (111) crystal plane of FeN obtained by measuring a surface of the nitrided steel member by X-ray diffraction, an intensity ratio represented by IFeN(111)/{IFeN (111)+IFeN (111)} is 0.5 or more, and a thickness of the iron nitride compound layer is 2 to 17 μm.