公开(公告)号：US11530727B2

公开(公告)日：2022-12-20

申请号：US16756335

申请日：2018-10-16

Applicant: SAFRAN CERAMICS ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE

Inventor： Eric Bouillon ,  Arnaud Delehouze ,  Amandine Lorriaux ,  Laurence Maille

IPC: C23C16/04 ,  C23C16/26 ,  F16D69/02 ,  C04B35/628 ,  C04B35/80 ,  C23C16/32 ,  C23C16/40 ,  C23C16/455 ,  C23C16/56 ,  F16D65/12

Abstract: A process for manufacturing a friction component made of composite material, includes the densification of a fibrous preform of carbon yarns by a matrix including at least pyrocarbon and at least one ZrOxCy phase, where 1≤x≤2 and 0≤y≤1, the matrix being formed by chemical vapor infiltration at least from a first gaseous precursor of pyrocarbon and a second gaseous precursor including zirconium, the second precursor being an alcohol or a C1 to C6 polyalcohol modified by linking the oxygen atom of at least one alcohol function to a group of formula —Zr—R3, the substituents R being identical or different, and R being selected from: —H, C1 to C5 carbon chains and halogen atoms.

公开(公告)号：US11530166B2

公开(公告)日：2022-12-20

申请号：US16756765

申请日：2018-10-18

Applicant: SAFRAN CERAMICS ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Inventor： Arnaud Delehouze ,  Amandine Lorriaux ,  Laurence Maille ,  Patrick David

IPC: C04B35/83 ,  C04B35/52 ,  C04B35/80 ,  C01B32/05

Abstract: A process for manufacturing pyrocarbon, includes forming pyrocarbon by a calefaction process from at least one C2 to C6 alcohol or polyalcohol precursor, the precursor being ethanol, rough laminar pyrocarbon being obtained by imposing a temperature of between 1250° C. and 1325° C. during calefaction.

公开(公告)号：US20220307191A1

公开(公告)日：2022-09-29

申请号：US17840136

申请日：2022-06-14

Applicant: SAFRAN CERAMICS

Inventor： Clément LOMONACO ,  Damien CAZAUBON

IPC: D06M10/00 ,  D06M10/06

Abstract: A device for implementing a method for depositing a coating on a continuous fiber from a precursor of the coating in the liquid phase, includes a tubular reactor having a U-shaped section to contain the fiber and the precursor of the coating in the liquid phase, a laser source to generate a laser beam in the reactor intended to heat the surface of a segment of the fiber in the presence of the precursor of the coating in the liquid phase, and a device for making the fiber travel inside the reactor.

公开(公告)号：US20220154591A1

公开(公告)日：2022-05-19

申请号：US17435685

申请日：2020-02-26

Applicant: SAFRAN CERAMICS

Inventor： Christophe Paul AUPETIT ,  Thierry Guy Xavier TESSON ,  Clément Marie Benoit ROUSSILLE ,  Cécile MarieEmilienne CHEVALIER

IPC: F01D11/12 ,  F01D25/24

Abstract: The invention concerns an assembly for a turbomachine turbine, comprising a housing (1) extending circumferentially about an axis X, sectors (2) intended to form a ring capable of delimiting a gas flow path, each sector (2) comprising a first side (17) and a second side (18) extending radially and circumferentially about the said axis X and spaced axially from each other, each side (17, 18) of the sector (2) comprising at least one radial bearing surface capable of cooperating with radial bearing means (13, 14) of the housing (1), at least one of the sides (17, 18) comprising means (23) for the circumferential positioning of the sector (2) with respect to the housing (1), characterised in that each radial bearing surface is cylindrical of axis X and is capable of bearing on a complementary cylindrical surface of axis X, integral with the housing (1).

公开(公告)号：US11198934B2

公开(公告)日：2021-12-14

申请号：US16313824

申请日：2017-06-27

Applicant: SAFRAN CERAMICS

Inventor： Stéphane Goujard ,  Adrien Delcamp ,  Cédric Descamps

IPC: C04B35/571 ,  C23C16/04 ,  C04B35/628 ,  C23C16/32 ,  C04B35/80

Abstract: A method of chemical vapor infiltration or deposition includes forming silicon carbide in pores of a porous substrate or on a surface of a substrate, the substrate being placed in a reaction enclosure, the silicon carbide being formed from a gas phase introduced into the reaction enclosure, the gas phase including a reagent compound that is a precursor of silicon carbide and that has the following formula in which n is an integer equal to 0 or 1; m is an integer lying in the range 1 to 3; p is an integer lying in the range 0 to 2 with m+p=3; and R designates —H or —CH3; a ratio C/Si between the number of carbon atoms and the number of silicon atoms in the introduced gas phase lying in the range 2 to 3.

公开(公告)号：US20210246549A1

公开(公告)日：2021-08-12

申请号：US17265378

申请日：2019-07-24

Applicant: SAFRAN CERAMICS

Inventor： Franck LAMOUROUX ,  Rémy DUPONT ,  William ROS

IPC: C23C16/04 ,  C23C16/46

Abstract: A process for densifying annular porous substrates by chemical vapour infiltration, includes providing a plurality of unit modules including a support plate on which is formed a stack of substrates, the support plate including a central gas inlet opening communicating with an internal volume formed by the central passages of the stacked substrates and gas outlet openings distributed angularly around the central opening, and a thermal mass cylinder disposed around the stack of substrates having a first end integral with the support plate and a second free end, forming stacks of unit modules in the chamber of a densification furnace, and injecting into the stacks of unit modules a gas phase including a gas precursor of a matrix material to be deposited within the porosity of the substrates.

公开(公告)号：US10995431B2

公开(公告)日：2021-05-04

申请号：US16763900

申请日：2018-11-09

Applicant: SAFRAN CERAMICS ,  ALBANY INTERNATIONAL CORP.

Inventor： Marie Lefebvre ,  François Charleux ,  Dominique Coupe ,  Brock Gilbertson ,  Julie-Anne Bouchet

IPC: D03D11/00 ,  D03D25/00 ,  B29C70/24 ,  B29C70/48 ,  B29K63/00 ,  B29K105/08 ,  B29K307/04 ,  B29K309/02 ,  B29L31/08

Abstract: A fiber structure includes a plurality of weft layers and of warp layers interlinked by multilayer three-dimensional weaving, the fiber structure having at least first and second portions that are adjacent in the warp direction, the first portion presenting, in a direction perpendicular to the warp and weft directions, a thickness that is greater than the thickness of the second portion, wherein the first portion has at its core at least one fiber fabric obtained by three-dimensional weaving of warp yarns and weft yarns in the form of a Mock Leno weave grid, the at least one fabric being present between two skins present at the surface of the first portion and being linked to the skins by warp yarns belonging to the skins that are locally deflected into the fabric.

公开(公告)号：US10988417B2

公开(公告)日：2021-04-27

申请号：US16099922

申请日：2017-05-11

Applicant: SAFRAN CERAMICS

Inventor： Eric Bouillon ,  Aurélia Clerambourg ,  Lisa Pin ,  David Marsal

IPC: C04B35/185 ,  C04B35/16 ,  C04B35/80 ,  C04B35/624 ,  C04B35/628 ,  F01D25/00 ,  F23R3/00 ,  F01D5/28 ,  F01D9/04 ,  C04B35/64

Abstract: A part made of composite material includes fiber reinforcement including silicon carbide fibers presenting an oxygen content less than or equal to 1 % in atomic percentage; and a matrix present in the pores of the fiber reinforcement and including at least one sintered silicate phase including at least one rare earth silicate, mullite, or a mixture of mullite and of at least one rare earth silicate, the matrix including at least a first phase including mullite and a second phase, different from the first phase, including at least one rare earth silicate.

公开(公告)号：US20200331808A1

公开(公告)日：2020-10-22

申请号：US16957976

申请日：2018-12-18

Applicant: SAFRAN CERAMICS ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  UNIVERSITE DE BORDEAUX

Inventor： Arnaud DELEHOUZE ,  Fanny PETIBON

IPC: C04B35/628

Abstract: A process for depositing a coating on short fibres of carbon or silicon carbide from a coating precursor, the short fibres having a length of between 50 μm and 5 mm, the process including at least heating the short fibres by placing a mixture including the fibres and a liquid phase of the coating precursor in a microwave field so as to bring the surface of the fibres to a temperature allowing the coating on the fibres from the coating precursor to be formed by calefaction.

公开(公告)号：US20200255344A1

公开(公告)日：2020-08-13

申请号：US16649329

申请日：2018-09-13

Applicant: Safran Ceramics

Inventor： Maxime François Roger CARLIN ,  Nicolas EBERLING-FUX ,  Eddy GOULLIANNE ,  Thierry Guy Xavier TESSON

IPC: C04B35/80 ,  C04B35/628 ,  C04B41/00 ,  F01D5/28 ,  F23R3/00

Abstract: Method for manufacturing a CMC, i.e. ceramic matrix composite material, part provided with at least one cutout, as well as to such a CMC part provided with at least one cutout, the method comprising the following steps: providing (E1) a fibrous reinforcement (10), forming (E2′) a cavity in a portion of the fibrous reinforcement (10), injecting (E3) a slip comprising at least a ceramic powder and a solvent, the slip being injected so as to impregnate the fibrous reinforcement (10′) and to fill the cavity of the fibrous reinforcement (10′), drying (E4) the obtained assembly, carrying out a densification (E6) by infiltration of a liquid densification material and solidification of said densification material, machining (E7) at least one cutout in the obtained blank (30) within the volume corresponding to the cavity of the fibrous reinforcement (10).