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:
Apr. 21, 2025
Filed:
Aug. 05, 2021
Applicant:
Tpr Co., Ltd., Tokyo, JP;
Inventors:
Syun Sugawara, Tokyo, JP;
Takatsugu Iwashita, Tokyo, JP;
Assignee:
TPR Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 14/06 (2005.12); C23C 14/32 (2005.12); F16J 9/26 (2005.12);
U.S. Cl.
CPC ...
C23C 14/0641 (2012.12); C23C 14/32 (2012.12); F16J 9/26 (2012.12);
Abstract
The present invention addresses the problem of providing a CrN coating film which has excellent peeling resistance such that peeling thereof starting at a crack is unlikely to occur even in a more severe lubrication environment. The problem is solved by a CrN coating film which has a preferred orientation of 200 as determined by XRD, and in which the X-ray diffraction intensity ratio of the (200) plane with respect to the (111) plane, (200)/(111), is 5.5 or higher, and the ratio of crystal grains of 1 μm or smaller is 85% or higher in a crystal grain size distribution measured by an EBSD analysis.