公开(公告)号：US20180073373A1

公开(公告)日：2018-03-15

申请号：US15560234

申请日：2016-03-22

Applicant: SAFRAN ,  SAFRAN AIRCRAFT ENGINES

Inventor： Sylvain PAQUIN ,  Charlotte Marie DUJOL ,  Patrice ENEAU ,  Hugues Denis JOUBERT ,  Adrien Bernard Vincent ROLLINGER

IPC: F01D5/28 ,  F01D5/18

CPC classification number: F01D5/284 ,  B22C9/04 ,  B22C9/10 ,  F01D5/18 ,  F01D5/187 ,  F05D2230/21 ,  F05D2230/211 ,  F05D2240/305 ,  F05D2300/20

Abstract: A ceramic core used for fabricating a hollow turbine blade for a turbine engine by using the lost-wax casting technique and shaped to constitute the cavities of the blade as a single element, includes, in order to feed the insides of these cavities jointly with cooling air, core portions that are to form first and second lateral cavities and that are connected to a core portion that is to form at least one central cavity, firstly in the core root via at least two ceramic junctions, and secondly at various heights up the core via a plurality of other ceramic junctions of positioning that defines the thickness of the internal partitions of the blade, while also ensuring additional cooling air for predetermined critical zones of the first and second lateral cavities.

公开(公告)号：US20240399444A1

公开(公告)日：2024-12-05

申请号：US18698138

申请日：2022-09-29

Applicant: SAFRAN

Inventor： Ming LONG ,  Ngadia Taha NIANE ,  Hugues Denis JOUBERT ,  Heni HACHANI

IPC: B22C7/02 ,  B22C9/04 ,  B33Y80/00

Abstract: A method for manufacturing a shell mold intended for manufacturing at least one metal part by lost-wax casting, the shell mold including at least one molding cavity intended for molding the metal part, and at least one feed channel intended to convey a liquid metal to the molding cavity, the method including manufacturing a wax pattern including a part pattern intended to form the molding cavity and a feed channel pattern intended to form the feed channel, arranging at least one ceramic insert around at least a portion of the feed channel pattern, and manufacturing the shell mold around the wax pattern.

公开(公告)号：US20220204415A1

公开(公告)日：2022-06-30

申请号：US17608246

申请日：2020-04-30

Applicant: SAFRAN

Inventor： Amar SABOUNDJI ,  Hugues Denis JOUBERT ,  Philippe PICOT ,  Luc Patrice BIANCHI

IPC: C04B41/52 ,  C04B41/50 ,  C04B41/45 ,  C04B41/87 ,  C04B35/565 ,  C04B35/80

Abstract: The invention relates to a part made of silicon-based ceramic material or silicon-based ceramic matrix composite (CMC) material comprising an environmental barrier coating (EBC), said coating (12, 13) comprising a bonding layer (12) deposited on the surface of the ceramic material or ceramic matrix composite (CMC), said bonding layer (12) being topped by one or more layers together forming a multifunctional barrier structure (13), characterised in that the bonding layer (12) has at its interface with the multifunctional structure a polycrystalline silica layer (12) or sub-layer (12b).

公开(公告)号：US20200331817A1

公开(公告)日：2020-10-22

申请号：US16753588

申请日：2018-10-03

Applicant: SAFRAN

Inventor： Luc BIANCHI ,  Hugues Denis JOUBERT ,  Philippe PICOT ,  Amar SABOUNDJI

IPC: C04B41/52 ,  C23C4/10 ,  C04B41/45 ,  C04B41/50 ,  C23C28/04 ,  C23C4/134 ,  C04B41/00

Abstract: A component includes a substrate at least a portion of which adjacent to a surface of the substrate is made of a material including silicon; a bond coat located on the surface of the substrate and including silicon, an environmental barrier which includes an outer layer of ceramic material covering the bond coat, wherein the environmental barrier further includes a self-healing inner layer located between the bond coat and the outer layer, the inner layer including a matrix in which silico-forming particles are dispersed, these particles being capable of generating a matrix crack healing phase in the presence of oxygen.