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:
Aug. 12, 2014
Filed:
Jun. 29, 2010
Yoshitaka Kojima, Hitachi, JP;
Hideyuki Arikawa, Mito, JP;
Akira Mebata, Kitaibaraki, JP;
Hiroyuki Doi, Tokai, JP;
Hajime Toriya, Hitachi, JP;
Kenjiro Narita, Hitachinaka, JP;
Yoshitaka Kojima, Hitachi, JP;
Hideyuki Arikawa, Mito, JP;
Akira Mebata, Kitaibaraki, JP;
Hiroyuki Doi, Tokai, JP;
Hajime Toriya, Hitachi, JP;
Kenjiro Narita, Hitachinaka, JP;
Hitachi Ltd., Tokyo, JP;
Abstract
A metal sealing material used in a sealing device which can reduce a gap between a stator and a rotor of a turbine. The metal sealing material used in a sealing device for a stator and a rotor of a turbine includes a surface layer and a lower layer composed of a porous metal layer, wherein the porosity of the surface layer is smaller than the porosity of the lower layer; the porosity of the surface layer is 60 to 65% and the porosity of the lower layer is 67 to 75% or less; and the porous metal layer has a thickness of 0.3 to 3.0 mm and may include, as a main component, an MCrAlY alloy where M is either one of Ni and Co or both thereof, and h-BN as a solid lubricant.