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:
Oct. 01, 2019
Filed:
Sep. 17, 2014
Nippon Itf, Inc., Kyoto, JP;
Nippon Piston Ring Co., Ltd., Saitama, JP;
Hideki Moriguchi, Kyoto, JP;
Tadashi Saito, Tochigi, JP;
Yoshikazu Tanaka, Kyoto, JP;
Tetsumi Arahi, Kyoto, JP;
Katsuaki Ogawa, Saitama, JP;
Takahiro Okazaki, Saitama, JP;
Hiroyuki Sugiura, Saitama, JP;
Yoshihiro Ito, Saitama, JP;
NIPPON ITF, INC., Kyoto, JP;
NIPPON PISTON RING CO., LTD., Saitama, JP;
Abstract
Provided are a coating film, a manufacturing method for the same, and a PVD device that not only sufficiently improve the balance of low-friction properties and wear resistance, but also improve chipping resistance (defect resistance) and peeling resistance. This coating film coats a substrate surface, wherein a hard carbon layer is formed extending in columns-shape perpendicular to the substrate when observed in a cross-sectional bright-field TEM image, the hard carbon layer is formed using a PVD method, and the ID/IG ratio is 1-6 when the hard carbon layer is measured using Raman spectroscopy, said ratio being the ratio of the Raman spectrum D band peak area intensity and G band peak area intensity.