Patents by Inventor Caroline Louchet
Caroline Louchet has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9926238Abstract: A part including a substrate in which at least a portion adjacent to a surface of the substrate is made of a refractory material containing silicon, is protected by an environmental barrier formed on the surface of the substrate and having at least a self-healing layer containing a rare earth silicate. The self-healing layer is formed: for at least 90 mol %, by a system constituted by 30 mol % to at most 80 mol % of at least one rare earth silicate RE2Si2O7, RE being a rare earth, and at least 20 mol % to 70 mol % of manganese oxide MnO; and for at most 10 mol %, by one or more oxides other than MnO, having a eutectic point with SiO2 less than or equal to 1595° C.; the self-healing layer presenting a liquid phase having a self-healing function at least throughout the temperature range 1200° C. to 1400° C., while conserving a majority solid phase.Type: GrantFiled: June 11, 2014Date of Patent: March 27, 2018Assignees: HERAKLES, UNIVERSITE DE BORDEAUXInventors: Caroline Louchet, Emilie Courcot, Francis Rebillat, Arnaud Delehouze
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Patent number: 9604886Abstract: A part made of ceramic matrix composite material has fiber reinforcement of carbon or ceramic fibers and a majority-ceramic sequenced matrix having first matrix layers made of crack-deflector material alternating with second matrix layers made of ceramic material. An interphase coating is interposed between the fibers and the matrix, and the interphase coating adheres to the fibers and to the matrix, and is formed of at least one sequence constituted by a first elementary layer made of carbon, possibly doped with boron, surmounted by a second elementary layer made of ceramic. The outer elementary interphase layer of the coating is a ceramic layer having an outer surface formed by ceramic grains of size lying essentially in the range 20 nm to 200 nm, with the presence of grains of size greater than 50 nm conferring roughness on the outer surface ensuring mechanical attachment with the adjacent matrix phase.Type: GrantFiled: November 22, 2012Date of Patent: March 28, 2017Assignees: HERAKLES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Franck Lamouroux, Sebastien Bertrand, Sylvain Jacques, Caroline Louchet
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Publication number: 20160130188Abstract: A part including a substrate in which at least a portion adjacent to a surface of the substrate is made of a refractory material containing silicon, is protected by an environmental barrier formed on the surface of the substrate and having at least a self-healing layer containing a rare earth silicate. The self-healing layer is formed: for at least 90 mol %, by a system constituted by 30 mol % to at most 80 mol % of at least one rare earth silicate RE2Si2O7, RE being a rare earth, and at least 20 mol % to 70 mol % of manganese oxide MnO; and for at most 10 mol %, by one or more oxides other than MnO, having a eutectic point with SiO2 less than or equal to 1595° C.; the self-healing layer presenting a liquid phase having a self-healing function at least throughout the temperature range 1200° C. to 1400° C., while conserving a majority solid phase.Type: ApplicationFiled: June 11, 2014Publication date: May 12, 2016Inventors: Caroline LOUCHET, Emilie COURCOT, Francis REBILLAT, Arnaud DELEHOUZE
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Patent number: 8940417Abstract: In order to protect a substrate having at least a portion adjacent to a surface that is made of a refractory material containing silicon, while the substrate is in use at high temperature in a medium that is oxidizing and wet, there is formed on the surface of the substrate an environmental barrier that contains no boron and that has at least one layer that is essentially constituted by a system of oxides formed by at least one rare earth oxide, silica, and alumina, and that is capable of self-healing by maintaining the presence of at least one solid phase in a temperature range extending up to at least 1400° C. approximately.Type: GrantFiled: December 23, 2009Date of Patent: January 27, 2015Assignees: Herakles, Universite de Bordeaux 1Inventors: Emilie Courcot, Francis Rebillat, Caroline Louchet-Pouillerie, Henri Tawil
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Publication number: 20140363663Abstract: A part made of ceramic matrix composite material has fiber reinforcement of carbon or ceramic fibers and a majority-ceramic sequenced matrix having first matrix layers made of crack-deflector material alternating with second matrix layers made of ceramic material. An interphase coating is interposed between the fibers and the matrix, and the interphase coating adheres to the fibers and to the matrix, and is formed of at least one sequence constituted by a first elementary layer made of carbon, possibly doped with boron, surmounted by a second elementary layer made of ceramic. The outer elementary interphase layer of the coating is a ceramic layer having an outer surface formed by ceramic grains of size lying essentially in the range 20 nm to 200 nm, with the presence of grains of size greater than 50 nm conferring roughness on the outer surface ensuring mechanical attachment with the adjacent matrix phase.Type: ApplicationFiled: November 22, 2012Publication date: December 11, 2014Applicants: HERAKLES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Franck Lamouroux, Sebastien Bertrand, Sylvain Jacques, Caroline Louchet
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Patent number: 8455103Abstract: An environmental barrier is formed on a substrate (10) of ceramic matrix composite material and comprises an outer anticorrosion protection layer (12) containing a compound of the type comprising an aluminosilicate of an alkali, or an alkaline-earth, or a rare-earth element. A bond sub-layer (14) is formed between the substrate (10) and the protection layer (12), the composition of the bond sub-layer varying from substantially pure silicon to substantially pure mullite between an inner face beside the substrate and an outer face, with the silicon content decreasing and the mullite content increasing.Type: GrantFiled: April 3, 2007Date of Patent: June 4, 2013Assignee: SNECMA Propulsion SolideInventors: Caroline Louchet-Pouillerie, Eric Bouillon, Henri Tawil, Gérard Gueldry, Rémi Bouvier
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Patent number: 8426326Abstract: A fiber reinforcing texture woven as a single part for fabricating a composite material part having an inner portion, or core, made by three-dimensional weaving with yarns made up from discontinuous fibers, and a portion adjacent to an outside surface, or skin, made by weaving with yarns made up from continuous filaments.Type: GrantFiled: June 12, 2012Date of Patent: April 23, 2013Assignee: Snecma Propulsion SolideInventors: Eric Bouillon, François Charleux, Caroline Louchet-Pouillerie, Rémi Bouvier, Dominique Coupe
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Publication number: 20120258641Abstract: A fiber reinforcing texture woven as a single part for fabricating a composite material part having an inner portion, or core, made by three-dimensional weaving with yarns made up from discontinuous fibers, and a portion adjacent to an outside surface, or skin, made by weaving with yarns made up from continuous filaments.Type: ApplicationFiled: June 12, 2012Publication date: October 11, 2012Applicant: SNECMA PROPULSION SOLIDEInventors: Eric Bouillon, François Charleux, Caroline Louchet-Pouillerie, Rémi Bouvier, Dominique Coupe
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Patent number: 8263504Abstract: A fiber reinforcing texture (10) woven as a single part for fabricating a composite material part having an inner portion (12), or core, made by three-dimensional weaving with yarns made up from discontinuous fibers, and a portion (14, 16) adjacent to an outside surface, or skin, made by weaving with yarns made up from continuous filaments.Type: GrantFiled: June 20, 2007Date of Patent: September 11, 2012Assignee: Snecma Propulsion SolideInventors: Eric Bouillon, François Charleux, Caroline Louchet-Pouillerie, Rémi Bouvier, Dominique Coupe
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Patent number: 8137826Abstract: An environmental barrier for a substrate of ceramic matrix composite material containing silicon, in particular containing SiC, is formed by an anticorrosion protection layer containing an aluminosilicate type compound of an alkali or alkaline-earth or rare earth element, e.g. BSAS, with a chemical barrier forming layer of aluminum nitride being interposed between the substrate and the anticorrosion protection layer.Type: GrantFiled: December 6, 2007Date of Patent: March 20, 2012Assignee: Snecma Propulsion SolideInventors: Caroline Louchet-Pouillerie, Henri Tawil, Eric Bouillon
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Publication number: 20110256411Abstract: In order to protect a substrate having at least a portion adjacent to a surface that is made of a refractory material containing silicon, while the substrate is in use at high temperature in a medium that is oxidizing and wet, there is formed on the surface of the substrate an environmental barrier that contains no boron and that has at least one layer that is essentially constituted by a system of oxides formed by at least one rare earth oxide, silica, and alumina, and that is capable of self-healing by maintaining the presence of at least one solid phase in a temperature range extending up to at least 1400° C. approximately.Type: ApplicationFiled: December 23, 2009Publication date: October 20, 2011Applicants: Universite de Bordeaux 1, Snecma Propulsion SolideInventors: Emilie Courcot, Francis Rebillat, Caroline Louchet-Pouillerie, Henri Tawil
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Publication number: 20100003504Abstract: An environmental barrier for a substrate of ceramic matrix composite material containing silicon, in particular containing SiC, is formed by an anticorrosion protection layer containing an aluminosilicate type compound of an alkali or alkaline-earth or rare earth element, e.g. BSAS, with a chemical barrier forming layer of aluminum nitride being interposed between the substrate and the anticorrosion protection layer.Type: ApplicationFiled: December 6, 2007Publication date: January 7, 2010Applicant: SNECMA PROPULSION SOLIDEInventors: Caroline Louchet-Pouillerie, Henri Tawil, Eric Bouillon
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Publication number: 20090280707Abstract: A fiber reinforcing texture (10) woven as a single part for fabricating a composite material part having an inner portion (12), or core, made by three-dimensional weaving with yarns made up from discontinuous fibers, and a portion (14, 16) adjacent to an outside surface, or skin, made by weaving with yarns made up from continuous filaments.Type: ApplicationFiled: June 20, 2007Publication date: November 12, 2009Applicant: SNECMA PROPULSION SOLIDEInventors: Eric Bouillon, François Charleux, Caroline Louchet-Pouillerie, Rémi Bouvier, Dominique Coupe
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Publication number: 20090169873Abstract: An environmental barrier is formed on a substrate (10) of ceramic matrix composite material and comprises an outer anticorrosion protection layer (12) containing a compound of the type comprising an aluminosilicate of an alkali, or an alkaline-earth, or a rare-earth element. A bond sub-layer (14) is formed between the substrate (10) and the protection layer (12), the composition of the bond sub-layer varying from substantially pure silicon to substantially pure mullite between an inner face beside the substrate and an outer face, with the silicon content decreasing and the mullite content increasing.Type: ApplicationFiled: April 3, 2007Publication date: July 2, 2009Applicant: SNECMA PROPULSION SOLIDEInventors: Caroline Louchet-Pouillerie, Eric Bouillon, Henri Tawil, Gerard Gueldry, Rémi Bouvier