公开(公告)号：US20250019312A1

公开(公告)日：2025-01-16

申请号：US18708682

申请日：2022-11-09

Applicant: BASF SE

Inventor： Marie-Claire HERMANT ,  Thorsten Martin STAUDT ,  Sherif Aly Hassan Aly MADKOUR ,  Markus REGENAUER ,  Sascha Tim SCHWENDY ,  James Daniel PITTS ,  Benjamin LUDL ,  Tim AHNSORGE ,  Tobias ROEDLMEIER ,  Firat HIZAL ,  Rien Hendrik GEERTS

IPC: C04B35/634 ,  B22F10/18 ,  B28B1/00 ,  B33Y10/00 ,  B33Y70/10 ,  B33Y80/00 ,  C04B35/10 ,  C04B35/48 ,  C04B35/505

Abstract: The invention relates to a ceramic feedstock comprising the components a), b) and optionally c), wherein component a) is at least one ceramic material, component b) is at least one binder (B) and optional component c) is at least one additive (A). The ceramic feedstock is preferably provided in form of a filament to be employed in three-dimensional (3D) printing techniques, particularly in a FFF printing process. The inventive ceramic feedstock can, therefore, be successfully employed for the 3D printing of support structures and/or separation layers. Further, the invention also relates to three-dimensional objects as such, in particular three-dimensional green bodies, three-dimensional brown bodies or three-dimensional sintered bodies as well as to a process for the preparation thereof.

公开(公告)号：US20250010370A1

公开(公告)日：2025-01-09

申请号：US18699938

申请日：2022-10-07

Applicant: BASF SE

Inventor： Sherif Aly Hassan Aly MADKOUR ,  Daniel MALKO ,  Benjamin SCHMIDT-HANSBERG

IPC: C25B13/02 ,  C25B13/04

Abstract: The invention relates to a process for manufacturing a multilayered porous transport layer, the process comprising (a) providing a first feedstock comprising first metal particles and a first polymer binder; and providing a second feedstock comprising second metal particles and a second polymer binder; the first and the second feedstock having a metal powder content of 40 to 70% by volume; and the first feedstock having (i) metal particles with a smaller average particles size, (ii) a higher metal powder content, or (iii) both, metal particles with a smaller average particles size and a higher metal powder content compared to the second feedstock; (b) coextruding the first and the second feedstock to form a film-shaped green body comprising a first layer and a second layer, the second layer being materially connected to the first layer above the melting temperature and or glass transition temperature of the first polymer binder and the second polymer binder; (c) optionally smoothening the film-shaped green body by rolling or calendering; (d) debinding the film-shaped green body to form a brown body; (e) sintering the brown body under a non-oxidative atmosphere or vacuum and a temperature of from 700 to 1300° C. to form the porous transport layer; wherein the first feedstock and the second feedstock are free of any solvents.