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:
Apr. 17, 2001
Filed:
Mar. 11, 1997
Shoko Suyama, Yokohama, JP;
Tsuneji Kameda, Tokyo, JP;
Masahiro Asayama, Yokohama, JP;
Nagatoshi Okabe, Yokohama, JP;
Hideyuki Hirata, Yokohama, JP;
Hiroshi Ichikawa, Yokohama, JP;
Yoshikazu Imai, Tokyo, JP;
Shiro Mitsuno, Yokohama, JP;
Satoshi Miyazaki, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
According to a ceramic fiber reinforced ceramic matrix composite material of the present invention, a ceramic fiber reinforced ceramic matrix composite material,comprises a composite ceramic matrix, and a preform,resulting from a fiber bundle,obtained by bundling a plurality of ceramic fibers,and disposed therein, and is characterized in that a first ceramic matrix M,is formed in an inner space of the fiber bundle,and at a region adjacent to an outer periphery thereof, and a second ceramic matrix M,is formed in an inner space of the preform,and at an outer peripheral region thereof, the space and region of the preform being defined except for those of the fiber bundle. Also characteristically, ceramic fibers are compositely disposed in a fiber volume fraction (Vf) of greater than 10% in a reaction-sintered ceramic matrix. It is further preferred that the composite material be provided on a surface thereof with a coat layer composed solely of a ceramics and having a thickness of not less than 50 &mgr;m.