US 11,866,373 B2
Method for coating fibers in a fluidized bed
Arnaud Delehouze, Moissy-Cramayel (FR); Eric Bouillon, Moissy-Cramayel (FR); Amine El Mansouri, Bordeaux (FR); Nathalie Dominique Bertrand, Saint-Maixant (FR); and Alain Jean-Michel Guette, Le Bouscat (FR)
Assigned to CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); SAFRAN CERAMICS, Le Haillan (FR); and UNIVERSITE DE BORDEAUX, Bordeaux (FR)
Appl. No. 18/042,963
Filed by SAFRAN CERAMICS, Le Haillan (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); and UNIVERSITE DE BORDEAUX, Bordeaux (FR)
PCT Filed Aug. 25, 2021, PCT No. PCT/FR2021/051485
§ 371(c)(1), (2) Date Feb. 24, 2023,
PCT Pub. No. WO2022/049336, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 2008867 (FR), filed on Sep. 1, 2020.
Prior Publication US 2023/0227368 A1, Jul. 20, 2023
Int. Cl. C04B 35/573 (2006.01); C04B 35/628 (2006.01); C04B 35/657 (2006.01); C04B 35/80 (2006.01); C23C 16/04 (2006.01); C23C 16/26 (2006.01); C23C 16/34 (2006.01)
CPC C04B 35/62884 (2013.01) [C04B 35/62868 (2013.01); C04B 35/62871 (2013.01); C04B 35/62873 (2013.01); C04B 35/62878 (2013.01); C04B 35/62897 (2013.01); C04B 35/657 (2013.01); C04B 35/80 (2013.01); C23C 16/045 (2013.01); C23C 16/26 (2013.01); C23C 16/342 (2013.01); C23C 16/345 (2013.01); C04B 2235/428 (2013.01); C04B 2235/526 (2013.01); C04B 2235/5248 (2013.01); C04B 2235/5252 (2013.01); C04B 2235/5264 (2013.01); C04B 2235/616 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for coating fibers, comprising:
desizing sized short fibers by removing a sizing present on the short fibers, the short fibers having an average length less than or equal to 5 mm, the short fibers being made of ceramic material or carbon,
sieving the desized short fibers in order to separate them from any agglomerates of sized short fibers still present,
introducing the desized and sieved short fibers into a reactor, and
coating the short fibers in the reactor by chemical vapor deposition in a fluidized bed.