摘要:
The invention relates to a method for manufacturing a part made of composite material, said method including the following steps: a step of forming a fibrous texture (10) from refractory fibres; a first impregnation step of impregnating the fibrous texture (10) with a first slurry (150) containing first refractory particles (151); a step of removing the liquid phase (152) from the first slurry (151) so as to allow only the first refractory particles (151) to remain inside said texture; a second impregnation step of impregnating the fibrous texture (20) with a second slurry (160) containing second refractory particles (161); a step of removing the liquid phase (162) from the second slurry (160) such as to allow only the second refractory particles (161) to remain inside said texture and to obtain a fibrous preform (30) filled with the first and second refractory particles (151, 161); and a step of sintering the first and second refractory particles (151, 161) in the fibrous preform (30) so as to form a refractory matrix inside said preform.
摘要:
The invention relates to a method for manufacturing a part made of composite material, which includes the following steps: forming a fibrous texture (10) from refractory fibres; placing the fibrous texture (10) in a mould (110) including an impregnation chamber (101) comprising in the lower portion thereof a part made of porous material (120), wherein the impregnation chamber (101) is closed at the top thereof by a deformable impervious membrane (140) separating the impregnation chamber (101) from a compaction chamber (102); injecting a slurry (150) containing a powder of refractory particles into the impregnation chamber (101); injecting a compression fluid (160) into the compaction chamber (102) so as to force the slurry (150) to pass through the fibrous texture (10); draining the liquid from the slurry via the part made of porous material (120) and maintaining the powder of refractory particles inside said texture so as to obtain a fibrous preform (20) filled with refractory particles; drying the fibrous preform (20); removing the fibrous preform (20) from the mould; and sintering the refractory particles contained in the fibrous preform so as to form a refractory matrix in said preform.