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. 21, 2026
Filed:
Sep. 16, 2020
Petroceramics S.p.a., Stezzano, IT;
C.i.r.a. (Centro Italiano Ricerche Aerospaziali) S.c.p.a., Capua, IT;
Lorenzo Cavalli, Stezzano, IT;
Massimiliano Valle, Stezzano, IT;
Mario De Stefano Fumo, Capua, IT;
Giuseppe Carmine Rufolo, Capua, IT;
Roberto Gardi, Capua, IT;
Stefania Cantoni, Capua, IT;
Massimo Rosa, Capua, IT;
PETROCERAMICS S.P.A., Stezzano, IT;
C.I.R.A. (CENTRO ITALIANO RICERCHE AEROPAZIALI) S.C.P.A., Capua, IT;
Abstract
A method makes a silicon compound-based passivating coating on a ceramic matrix composite reinforced with carbon fibers. A piece made in a ceramic matrix composite reinforced with carbon fibers is placed in a closed chamber of an oven. A predefined load of solid silicon is placed in the chamber avoiding direct contact between the silicon and the piece. The oven is heated while maintaining inside the chamber predefined medium/low vacuum conditions, to generate silicon vapors inside the chamber. The vapors react with substances on the surface of the piece to form a surface coating having composites of the substances with the silicon. The partial pressure of the vacuum, temperature inside the chamber and exposure times of the piece to the silicon vapors to obtain a predefined thickness of the surface coating are chosen. The piece is cooled once the predefined thickness of the passivating coating is reached.