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. 17, 2015
Filed:
Oct. 29, 2004
Hiroyuki Ochiai, Tokyo, JP;
Mitsutoshi Watanabe, Tokyo, JP;
Mikiya Arai, Tokyo, JP;
Shigeru Saburi, Tokyo, JP;
Eiji Nakayama, Tokyo, JP;
Akihiro Goto, Tokyo, JP;
Masao Akiyoshi, Tokyo, JP;
Hiroyuki Ochiai, Tokyo, JP;
Mitsutoshi Watanabe, Tokyo, JP;
Mikiya Arai, Tokyo, JP;
Shigeru Saburi, Tokyo, JP;
Eiji Nakayama, Tokyo, JP;
Akihiro Goto, Tokyo, JP;
Masao Akiyoshi, Tokyo, JP;
ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES CO., LTD., Tokyo, JP;
MITSUBISHI DENKI KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A sliding surface of a high-temperature portion is subjected to an electro-discharge surface treatment with one or both of a high-temperature hard material () and a material having a lubricating property at a high temperature (). The high-temperature hard material () is any or a mixture of cBN, TiC, TiN, TiAlN, TiB, WC, CrC, SiC, ZrC, VC, BC, SiN, ZrO, and AlO. The material having the lubricating property at the high temperature () contains chromium and/or chromium oxide (CrO) and/or hexaboron nitride (hBN). An electrode formed by compression molding of the high-temperature hard material, and the high-temperature lubricating material containing at least one of Cr and hBN and having the lubricating property at the high temperature is used as the electrode for the electro-discharge surface treatment.