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:
Sep. 10, 2002
Filed:
Jun. 30, 1999
Shigeru Hanzawa, Kagamihara, JP;
Takao Nakagawa, Urawa, JP;
Other;
Abstract
A fiber-composite material ( ) is comprised of a yarn aggregate ( ) in which yam ( A, B) including at least a bundle ( ) of carbon fiber and a carbon component other than carbon fiber is three-dimensionally combined and integrally formed without separation from each other; and a matrix made of Si—SiC-based materials ( A, B, A, B) filled between the yarn ( A, B) adjacent to each other within the yarn aggregate ( ). A method of preparing fiber-composite material is comprised of the steps of: producing bundles ( ) of carbon fiber by impregnating a component of powdery carbon into the bundles ( ) of carbon fiber, which eventually forms a matrix shape; forming a plastic coat around the bundles ( ) of carbon fiber to obtain an intermediate material; molding the intermediate material to obtain a molded product by making the intermediate material into a yarn-shape and laminating a predetermined amount of the material, or burning the molded product to obtain a burned product; holding the molded product or the burned product and Si, at 1100 to 1400° C. in an atmosphere of inert gas; and heating the molded product or the burned product and Si to a temperature from 1450 to 2500° C., to thereby impregnate Si—SiC-based material into the inside of pores of the molded product or the burned product. A light and strong composite material is provided, which has excellent shock resistance, corrosion resistance in a strong oxidation and corrosion environments, creep resistance, spalling resistance, wear resistance, a low friction coefficient and a self-restorative ability by which a defect is healed.