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. 19, 2020
Filed:
Aug. 15, 2016
Kabushiki Kaisha Riken, Chiyoda-ku, Tokyo, JP;
Akio Shinohara, Tokyo, JP;
KABUSHIKI KAISHA RIKEN, Chiyoda-ku, Tokyo, JP;
Abstract
The provided sliding member has both excellent wear resistance and excellent coating adhesion even under harsh sliding conditions. The disclosed sliding member () is used in the presence of a lubricating oil and includes a base member (), a metal intermediate layer () formed on the sliding surface (A) side of the base member, a layered carbon coating () formed on the metal intermediate layer and having a first carbon coating () and a second carbon coating () layered alternately therein, and a hard carbon coating () formed on the layered carbon coating. Under bright-field observation with a transmission electron microscope, an image of the first carbon coating () is brighter than an image of the second carbon coating (). Furthermore, 10 nm<T≤1000 nm and 0.010≤T/T≤0.60, where Tand Tare the thicknesses of the first and second carbon coatings ().