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:
Nov. 05, 2013
Filed:
Mar. 09, 2010
Hirotaka Ito, Kobe, JP;
Kenji Yamamoto, Kobe, JP;
Hirotaka Ito, Kobe, JP;
Kenji Yamamoto, Kobe, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
A laminated film is provided which exhibits excellent durability even when formed over a surface of a member (in particular, sliding member) to be used under a high pressure of contacted surface of 2.0 GPa or more. The laminated film includes an intermediate layer which contains one or more compounds selected from the group consisting of a carbide, a boride, and a boron carbide compound of a metal element, and which has a hardness measured by a nanoindentation method (hereinafter referred to as a 'nanoindentation hardness') of not less than 20 GPa nor more than 35 GPa and a thickness of not less than 5 μm nor more than 10 μm, and a diamond-like carbon film which is formed over the intermediate layer, and which has a nanoindentation hardness of not less than 25 GPa nor more than 35 GPa and a thickness of not less than 0.3 μm nor more than 1.0 μm.