公开(公告)号：US12084779B2

公开(公告)日：2024-09-10

申请号：US15733743

申请日：2019-04-19

申请人： SAFRAN AIRCRAFT ENGINES ,  SAFRAN

发明人： Marc Soisson ,  Said Boukerma ,  Janusz Lisowski ,  Alexandre Gimel ,  Amar Saboundji

IPC分类号： C23F1/04 ,  B22C7/02 ,  B22C9/10 ,  B22C9/24 ,  B23P15/02 ,  F01D5/14

CPC分类号： C23F1/04 ,  B22C9/10 ,  B22C9/24 ,  B23P15/02 ,  F01D5/14 ,  B22C7/02 ,  F05D2220/323 ,  F05D2230/10 ,  F05D2230/21

摘要： The invention relates to a method for producing a metal bladed element for a turbomachine of an aircraft, said bladed element comprising at least one blade having a lower surface and an upper surface extending between a leading edge and a trailing edge of the blade, the trailing edge having to have a thickness X1, said method comprising the steps of: a) producing the bladed element by lost-wax casting, and b) finishing the bladed element, characterised in that step b) comprises the chemical milling at least of the trailing edge of the or each blade so as to obtain said thickness X1 which cannot be directly obtained by step a).

公开(公告)号：US11293290B2

公开(公告)日：2022-04-05

申请号：US16757184

申请日：2018-10-17

申请人： SAFRAN

发明人： Amar Saboundji ,  Virginie Jaquet

IPC分类号： F01D5/28 ,  C23C4/073 ,  C23C14/16 ,  C23C28/00 ,  F01D25/00 ,  C23C4/137 ,  C22C19/05

摘要： A turbine component includes a substrate made from monocrystalline nickel-based superalloy including rhenium, which has a γ-γ′ Ni phase, and an average weight faction of chromium of less than 0.08, a sublayer made from nickel-based metal superalloy covering the substrate, in which the sublayer made from metal superalloy includes at least aluminium, nickel, chromium, silicon, hafnium and has, predominantly by volume, a γ′-Ni 3 Al phase.

公开(公告)号：US11542586B2

公开(公告)日：2023-01-03

申请号：US17265835

申请日：2019-08-07

申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES ,  SAFRAN

发明人： Mirna Bechelany ,  Virginie Jaquet ,  Amar Saboundji ,  Mathieu Soulier ,  Mathieu Boidot ,  Richard Laucournet

IPC分类号： C23C10/52 ,  C23C10/58 ,  C23C28/02 ,  C23C10/34 ,  C23C10/42 ,  C23C10/44 ,  C23C10/28 ,  C23C10/48

摘要： A process for coating a part by chemical vapor diffusion is provided and includes placing a powder mixture in a chamber, immersing the part partially in the powder mixture, and applying a heat treatment to the part. The powder mixture includes a first component and a second component forming a gaseous compound during the heat treatment so as to allow deposition of the second component on the part. The part includes a metal refractory allow and the second component forms a solid diffusion alloy by solid diffusion with a metal species of the refractory metal alloy to generate a coating. The solid diffusion allow generates a passivating oxide layer when subjected to oxidizing conditions.

公开(公告)号：US11078567B2

公开(公告)日：2021-08-03

申请号：US16308245

申请日：2017-06-09

申请人： SAFRAN

发明人： Amar Saboundji ,  Virginie Jaquet

IPC分类号： C23C14/58 ,  C23C10/28 ,  C22C19/05 ,  C23C14/16

摘要： The invention relates to a process for manufacturing a part made of nickel-based monocrystalline superalloy containing hafnium. This process is noteworthy in that it comprises the following successive steps consisting in: —manufacturing a nickel-based monocrystalline superalloy that is not doped with hafnium, —manufacturing a part from this superalloy, —directly depositing on said part a layer of hafnium having a thickness of between 50 nm and 800 nm, —carrying out a diffusion treatment of the hafnium so as to form an interdiffusion layer at the surface of said part and to thus obtain a part made of nickel-based monocrystalline superalloy containing hafnium.

公开(公告)号：US12006577B2

公开(公告)日：2024-06-11

申请号：US17614145

申请日：2020-05-26

申请人： SAFRAN

发明人： Amar Saboundji ,  Luc Patrice Bianchi

IPC分类号： C23C28/00 ,  C23C4/11 ,  C23C4/134 ,  C23C14/02 ,  C23C14/34

CPC分类号： C23C28/3455 ,  C23C4/11 ,  C23C4/134 ,  C23C14/024 ,  C23C14/028 ,  C23C14/34 ,  C23C28/3215

摘要： The present invention relates to a method for the protection of a hafnium-free, nickel-based monocrystalline superalloy part against corrosion and oxidation. The method comprises at least the following steps of: manufacturing a hafnium-free, nickel-based monocrystalline superalloy part (1), depositing on the part a first hafnium-free sublayer (2), depositing, on the first sublayer (2), a second hafnium-doped sublayer (3), depositing, on the second sublayer (3), a third hafnium-free sublayer (4), sandblasting the third sublayer (4) to at least partially separate the third sublayer (4) and increase the surface roughness of an upper sub-layer formed by the second sublayer (3) and at least partially by the third sublayer (4), performing oxidation treatment so as to obtain at the surface a layer of hafnium-doped oxidised material (5), depositing a thermal barrier layer (6) on the layer of oxidised material (5).

公开(公告)号：US11873736B2

公开(公告)日：2024-01-16

申请号：US17415082

申请日：2019-12-20

申请人： SAFRAN

发明人： Amar Saboundji ,  Alice Agier ,  Virginie Jaquet

IPC分类号： F01D5/28 ,  C23C28/00 ,  C22C19/05 ,  C23C10/28

CPC分类号： F01D5/288 ,  C22C19/057 ,  C23C10/28 ,  C23C28/3215 ,  C23C28/3455 ,  F05D2230/31 ,  F05D2230/40 ,  F05D2300/132 ,  F05D2300/143 ,  F05D2300/175 ,  F05D2300/607

摘要： The present invention concerns a turbine part comprising a substrate made of nickel-based monocrystalline superalloy, comprising chromium and at least one element chosen among rhenium and ruthenium, the substrate having a γ-γ′ phase, an average mass fraction of rhenium and of ruthenium greater than or equal to 4% and an average mass fraction of chromium less than or equal to 5% and preferably less than or equal to 3%, a sub-layer covering at least a part of a surface of the substrate, characterised in that the sublayer has a γ-γ′ phase and an average atomic fraction of chromium greater than 5%, of aluminium between 10% and 20% and of platinum between 15% and 25%.

公开(公告)号：US11473185B2

公开(公告)日：2022-10-18

申请号：US16308331

申请日：2017-06-09

申请人： SAFRAN

发明人： Amar Saboundji ,  Virginie Jaquet

IPC分类号： C23C14/16 ,  C23C14/08 ,  C23C14/14 ,  C23C14/34 ,  C23C14/58 ,  C23C12/00 ,  C23C28/00

摘要： A process for protecting a part made of a hafnium-free nickel-based single-crystal superalloy against corrosion and oxidation includes manufacturing a part made of a hafnium-free nickel-based single-crystal superalloy, depositing successively on the part, a first layer including hafnium, then a mixed layer of stacked layers of an undercoat of an alloy having 10 atomic % or more of aluminum and a second layer including hafnium or a mixed layer of an alloy of aluminum and hafnium, and then a third layer including hafnium, and diffusing and performing an oxidation treatment so as to obtain a hafnium-doped alumina layer.

公开(公告)号：US11248476B2

公开(公告)日：2022-02-15

申请号：US16649397

申请日：2018-09-21

申请人： SAFRAN

发明人： Amar Saboundji ,  Virginie Jaquet

IPC分类号： F01D5/28 ,  C23C4/08 ,  C23C14/16 ,  C23C28/00 ,  C23C4/073 ,  C22C19/05 ,  C23C4/137 ,  C23C28/02 ,  C22C19/00

摘要： A turbine part, such as a turbine blade or a distributor fin, for example, including a substrate made of superalloy based on monocrystalline nickel, including rhenium and/or ruthenium, and having a γ′-NisAI phase that is predominant by volume and a γ-Ni phase, the part also including a sublayer made of metal superalloy based on nickel covering the substrate, wherein the sublayer has a γ′-NisAI phase that is predominant by volume and wherein the sublayer has an average atomic fraction of aluminium of between 0.15 and 0.25, of chromium of between 0.03 and 0.08, of platinum of between 0.01 and 0.05, of hafnium of less than 0.01 and of silicon of less than 0.01. A process for manufacturing a turbine part including a step of vacuum deposition of a sublayer made of a superalloy based on nickel having predominantly by volume a γ′-NisAI phase, on a substrate made of superalloy based on nickel including rhenium and/or ruthenium.

公开(公告)号：US10982333B2

公开(公告)日：2021-04-20

申请号：US16345189

申请日：2017-10-19

申请人： SAFRAN

发明人： Amar Saboundji ,  Virginie Jaquet ,  Jeremy Rame

IPC分类号： B32B15/04 ,  C23C28/00 ,  C23C14/08 ,  C23C14/16 ,  C23C10/28 ,  C23C14/34

摘要： The invention relates to a method for manufacturing a part (1) comprising a nickel-based monocrystalline superalloy substrate (2). This method is characterised in that it comprises the steps that consist of: manufacturing a nickel-based monocrystalline superalloy substrate (2); forming a coating (3) on said substrate (2), comprising at least one layer (30) of a first type comprising aluminum and platinum, at least one layer (31) of a second type comprising aluminium, silicon, platinum and a layer (32) of a third type comprising nickel, aluminium, silicon and platinum, said layer (32) of the third type being the outermost layer of the stack of coating layers (3); and forming a layer (4) of silicon-doped alumina on said layer (32) of the third type.

公开(公告)号：US12110581B2

公开(公告)日：2024-10-08

申请号：US17766764

申请日：2020-10-08

申请人： SAFRAN

发明人： Amar Saboundji ,  Fabrice Crabos

IPC分类号： C23C14/02 ,  B32B15/01 ,  C22C19/05 ,  C23C14/16

CPC分类号： C23C14/021 ,  B32B15/01 ,  C22C19/058 ,  C23C14/16 ,  B32B2311/22 ,  B32B2605/18

摘要： The present invention relates to a method for manufacturing a part, comprising the steps of chemically etching, in a wet acid medium, at least a portion of a surface of a substrate made of a monocrystalline superalloy, comprising at least one element chosen from rhenium and ruthenium, the substrate having a γ-γ′ phase, the substrate having an average mass fraction of rhenium and/or ruthenium greater than or equal to 3%, the chemical etching being done in such a way that the average mass fraction of rhenium and/or ruthenium over the portion of the surface of the substance is less than 2%, and a step of depositing on the portion of the substrate a protective coating having a γ-γ′ phase and an average mass fraction of rhenium and/or ruthenium of less than 1%.