US 12,221,387 B2
Abradable coating having a honeycomb structure made of composite material having a ceramic matrix made of short fibers
Clément Jarrossay, Moissy-Cramayel (FR); Aurélien Gaillard, Moissy-Cramayel (FR); and Yann Richard, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR); and SAFRAN CERAMICS, Le Haillan (FR)
Appl. No. 18/568,587
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR); and SAFRAN CERAMICS, Le Haillan (FR)
PCT Filed Jun. 6, 2022, PCT No. PCT/FR2022/051071
§ 371(c)(1), (2) Date Dec. 8, 2023,
PCT Pub. No. WO2022/263740, PCT Pub. Date Dec. 22, 2022.
Claims priority of application No. 2106286 (FR), filed on Jun. 15, 2021.
Prior Publication US 2024/0262756 A1, Aug. 8, 2024
Int. Cl. C04B 35/80 (2006.01); C04B 35/628 (2006.01); C04B 35/657 (2006.01); C04B 38/00 (2006.01); F01D 11/12 (2006.01)
CPC C04B 35/80 (2013.01) [C04B 35/62878 (2013.01); C04B 35/657 (2013.01); C04B 38/0006 (2013.01); C04B 2235/428 (2013.01); C04B 2235/526 (2013.01); C04B 2235/616 (2013.01); F01D 11/122 (2013.01); F01D 11/127 (2013.01); F05D 2230/20 (2013.01); F05D 2250/283 (2013.01); F05D 2300/6033 (2013.01); F05D 2300/611 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for manufacturing an abradable coating including a tubular cell structure, the method comprising:
obtaining an assembly comprising a first preform of the tubular cell structure mounted on a second preform or on a turbomachine component, the first preform comprising a fibrous reinforcement of discontinuous short fibers and the second preform or the turbomachine component comprising a fibrous reinforcement of continuous fibers, and
densifying the first preform of the assembly by infiltration with a molten composition comprising silicon,
wherein the discontinuous short fibers have a length comprised between 50 μm and 500 μm.