Method for the production of a part made from a composite material, by means of the injection of powder into a fibrous reinforcement with drainage through a composite filtration layer
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United States of America Patent
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Aug 6, 2024
Grant Date -
Oct 29, 2020
app pub date -
Dec 21, 2018
filing date -
Dec 28, 2017
priority date (Note) -
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Abstract
A process for manufacturing a composite material part includes formation of a fibrous texture from refractory ceramic fibres, placement of the fibrous texture in a mould with interposition of a filtration layer between the fibrous texture and a discharge port, the filtration layer including a partially densified fibrous structure, pressure injection of a slurry containing a powder of refractory ceramic particles into the fibrous texture, drainage by the filtration layer of the slurry solvent having passed through the fibrous texture and retention of the powder of refractory ceramic particles within the texture by the filtration layer to obtain a fibrous preform including the fibrous texture filled with refractory ceramic particles and the filtration layer, heat treatment of the refractory ceramic particles present in the fibrous texture of the preform to form a composite material part including the fibrous texture densified by a refractory ceramic matrix and the filtration layer.
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