US 11,998,985 B2
Use of a deformable interface for the fabrication of complex parts
Claude Estournes, Rieumes (FR); Charles Maniere, Caen (FR); and Lise Durand, Toulouse (FR)
Assigned to Universite Toulouse III—Paul Sabatier, Toulouse (FR); and Centre National De La Recherche Scientifique, Paris (FR)
Filed by Universite Toulouse III—Paul Sabatier, Toulouse (FR); and Centre National De La Recherche Scientifique, Paris (FR)
Filed on May 13, 2022, as Appl. No. 17/743,975.
Application 17/743,975 is a division of application No. 15/773,791, abandoned, previously published as PCT/EP2016/076657, filed on Nov. 4, 2016.
Claims priority of application No. 1560564 (FR), filed on Nov. 4, 2015.
Prior Publication US 2022/0266336 A1, Aug. 25, 2022
Int. Cl. B22F 3/14 (2006.01); B22F 3/105 (2006.01); B22F 5/00 (2006.01); B29C 33/00 (2006.01); B29C 43/00 (2006.01); C04B 35/10 (2006.01); C04B 35/111 (2006.01); C04B 35/48 (2006.01); C04B 35/486 (2006.01); C04B 35/634 (2006.01); C04B 35/645 (2006.01); B22F 3/15 (2006.01); B22F 3/17 (2006.01)
CPC B22F 3/14 (2013.01) [B22F 3/105 (2013.01); B22F 5/003 (2013.01); B29C 33/0011 (2013.01); B29C 33/0016 (2013.01); B29C 43/006 (2013.01); C04B 35/10 (2013.01); C04B 35/111 (2013.01); C04B 35/48 (2013.01); C04B 35/486 (2013.01); C04B 35/63424 (2013.01); C04B 35/645 (2013.01); B22F 3/15 (2013.01); B22F 3/17 (2013.01); B22F 2301/052 (2013.01); C04B 2235/666 (2013.01); C04B 2235/77 (2013.01); C04B 2235/94 (2013.01); C04B 2235/945 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for fabricating at least one part of a shape, wherein the method comprises:
introducing powder into a mold,
forming an imprint on said powder with a counter-form to form a sacrificial counter-form having an internal cavity constituted by said imprint,
after forming the imprint, depositing at least one layer of a material on a surface of said imprint to form at least one deformable interface layer having an initial geometrical shape,
after depositing the at least one layer of material, introducing powder on a surface of said at least one deformable interface layer into said internal cavity to form a volume to shape the at least one part of the shape,
densifying under load along at least one direction of compression an assembly comprising said sacrificial counter-form, said at least one deformable interface layer and said volume, wherein said volume has variations of thickness along said direction of compression, wherein said at least one deformable interface layer separates said volume from at least one face of said sacrificial counter-form, and wherein said at least one deformable interface layer is deformed to adopt a final geometrical shape distinct from said initial geometrical shape, and
extracting said at least one part of the shape from said sacrificial counter-form,
wherein the material of said at least one deformable interface layer is inert in consolidation and does not chemically react with the powder of said sacrificial counter-form and with the powder of said volume.