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:
Dec. 19, 1995
Filed:
Dec. 21, 1993
Jean-Philippe Rocher, Saint-Medard-en-Jalles, FR;
Jean-Claude Cavalier, Le Pian Medoc, FR;
Jean-Luc Laquet, Bordeaux, FR;
Societe Europeenne de Propulsion, Suresnes, FR;
Abstract
In a process according to the invention, before a carbon/fiber ceramic matrix is densified, the carbon fiber reinforcement material is subjected to a thermal treatment in a non-oxidizing environment at a temperature greater than 1300.degree. C. and less than 2200.degree. C., to act on the bonding between the fibers and the matrix. If a preform of the carbon fiber reinforcement material is formed prior to densification by a matrix, then the thermal treatment may be performed on the preform, prior to densification by the matrix. If the matrix is densified by chemical vapor infiltration inside a furnace, then the thermal treatment may be performed inside the infiltration furnace prior to the densification. The thermal treatment achieves a significant improvement in the strength of the resulting composite material.