US 12,269,780 B2
Method for coating short fibres
Arnaud Delehouze, Moissy-Cramayel (FR); Eric Bouillon, Moissy-Cramayel (FR); Nathalie Dominique Bertrand, Saint-Maixant (FR); Alain Jean-Michel Guette, Le Bouscat (FR); and Armine El Mansouri, Bordeaux (FR)
Assigned to SAFRAN CERAMICS, Le Haillan (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); and UNIVERSITE DE BORDEAUX, Bordeaux (FR)
Appl. No. 18/012,121
Filed by SAFRAN CERAMICS, Le Haillan (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); and UNIVERSITE DE BORDEAUX, Bordeaux (FR)
PCT Filed Jun. 21, 2021, PCT No. PCT/FR2021/051123
§ 371(c)(1), (2) Date Dec. 21, 2022,
PCT Pub. No. WO2022/003269, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 2006957 (FR), filed on Jul. 1, 2020.
Prior Publication US 2023/0174431 A1, Jun. 8, 2023
Int. Cl. C04B 35/628 (2006.01); C04B 35/64 (2006.01); C04B 35/80 (2006.01); C23C 16/04 (2006.01); C23C 16/26 (2006.01); C23C 16/34 (2006.01); C23C 16/442 (2006.01)
CPC C04B 35/62884 (2013.01) [C04B 35/62868 (2013.01); C04B 35/62871 (2013.01); C04B 35/62873 (2013.01); C04B 35/64 (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); C23C 16/442 (2013.01); C04B 2235/5244 (2013.01); C04B 2235/5248 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for coating fibres, comprising:
coating short fibres having an average length less than or equal to 5 mm by chemical vapour deposition in a fluidised bed, the short fibres treated being made of ceramic material or carbon and being mixed with spacer particles distinct from the short fibres, said spacer particles having an average diameter greater than or equal to 20 μm, the spacer particles belonging to Geldart groupings A or B and the content by volume of spacer particles in the mixture with the short fibres being between 25% and 95%.