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. 31, 1993
Filed:
Aug. 23, 1989
Applicant:
Inventors:
Pierre Lespade, Merignac, FR;
Alain Guette, le Bouscat, FR;
Erik Menessier, Tarbes, FR;
Rene Pailler, Cestas, FR;
Assignee:
Aerospatiale Societe Nationale Industrielle, Paris, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501 90 ; 501 95 ;
Abstract
The invention is related to a heat treatment method for silicon and carbon-containing ceramic fibers as well as fibers of the same nature with a laminated structure and having an external carbon layer. The processing method for the invention comprises a heat treatment in vacuum, during at least three hours and at a temperature of about 1000.degree. C. This treatment yields fibers surrounded with a layer of endogenic SiO.sub.2, that is itself coated with a layer of endogenic carbon. Said fibers can be used to make composite materials with fiber reinforcement.