Patents by Inventor Bertrand Saint Ramond

Bertrand Saint Ramond 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).

  • Patent number: 7569251
    Abstract: A method of forming a gas turbine part includes forming a bonding underlayer on a superalloy metal substrate, the underlayer including an intermetallic compound of aluminum, nickel, and platinum, and forming a ceramic outer layer on the alumina film formed on the bonding underlayer. The bonding underlayer essentially comprises an Ni—Pt—Al ternary system constituted by an aluminum-enriched ?-NiPt type structure, in particular an Ni—Pt—Al ternary system having a composition NizPtyAlx in which z, y, and x are such that 0.05?z?0.40, 0.30?y?0.06, and 0.15?x?0.40.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: August 4, 2009
    Assignee: Snecma
    Inventors: Bertrand Saint-Ramond, Manuel Silva, John Nicholls, Maxime Carlin
  • Publication number: 20090087572
    Abstract: A method of forming a gas turbine part includes forming a bonding underlayer on a superalloy metal substrate, the underlayer including an intermetallic compound of aluminum, nickel, and platinum, and forming a ceramic outer layer on the alumina film formed on the bonding underlayer. The bonding underlayer essentially comprises an Ni—Pt—Al ternary system constituted by an aluminum-enriched ?-NiPt type structure, in particular an Ni—Pt—Al ternary system having a composition NizPtyAlx in which z, y, and x are such that 0.05?z?0.40, 0.30?y?0.60, and 0.15?x?0.40.
    Type: Application
    Filed: October 12, 2006
    Publication date: April 2, 2009
    Applicant: SNECMA MOTEURS
    Inventors: Bertrand Saint-Ramond, Manuel Silva, John Nicholls, Maxime Carlin
  • Patent number: 7429350
    Abstract: The invention relates to a composite target in the form of a bar made of ceramic powders and designed to be evaporated under an electron beam, the target comprising zirconia and at least one zirconia stabilizer. In characteristic manner, said target is wherein said zirconia stabilizer is at a molar content lying in the range 2% to 30% and wherein said zirconia is formed by more than 90% of a monoclinic phase. The invention is applicable to fabricating a ceramic thermal barrier of low thermal conductivity and high thermomechanical strength formed by evaporation under an electron beam.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: September 30, 2008
    Assignees: SNECMA, SNECMA Services
    Inventors: Bertrand Saint-Ramond, Andre Malie, Christophe Chaput, Isabelle Porte, Cyrille Delage
  • Patent number: 7396592
    Abstract: The invention relates to a composite target in the form of a bar made of ceramic powders and designed to be evaporated under an electron beam, the target comprising zirconia and at least one zirconia stabilizer. In characteristic manner, said target is wherein said zirconia stabilizer is at a molar content lying in the range 2% to 30% and wherein said zirconia is formed by more than 90% of a monoclinic phase. The invention is applicable to fabricating a ceramic thermal barrier of low thermal conductivity and high thermomechanical strength formed by evaporation under an electron beam.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: July 8, 2008
    Assignees: Snecma, Snecma Services
    Inventors: Bertrand Saint-Ramond, Andre Malie, Christophe Chaput, Isabelle Porte, Cyrille Delage
  • Patent number: 7374821
    Abstract: The invention relates to a ceramic thermal barrier composition of low conductivity and high high-temperature strength. In characteristic manner, the composition comprises a zirconia base, at least one trivalent oxide enabling the zirconia to be stabilized and enabling the thermal conductivity of the zirconia to be reduced in optimum manner, and at least one pentavalent oxide enabling the content of oxygen vacancies to be reduced so as to make it substantially equal to that of a partially stabilized zirconia. Preferably, said trivalent oxide is present with a molar content constituted by a first portion enabling the zirconia to be stabilized partially and a second portion which introduces point defects into the lattice said pentavalent oxide is present with a molar concentration equal to said molar concentration of said second portion of the trivalent oxide. The invention is applicable to making a superalloy machine part having a ceramic coating with said composition, and possibly also a bonding underlayer.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: May 20, 2008
    Assignees: Snecma, Snecma Services
    Inventors: Bérangère Leclercq, Rémy Mevrel, Alban Azzopardi, André Malie, Bertrand Saint-Ramond
  • Publication number: 20080088067
    Abstract: The invention relates to a composite target in the form of a bar made of ceramic powders and designed to be evaporated under an electron beam, the target comprising zirconia and at least one zirconia stabilizer. In characteristic manner, said target is wherein said zirconia stabilizer is at a molar content lying in the range 2% to 30% and wherein said zirconia is formed by more than 90% of a monoclinic phase. The invention is applicable to fabricating a ceramic thermal barrier of low thermal conductivity and high thermomechanical strength formed by evaporation under an electron beam.
    Type: Application
    Filed: December 10, 2007
    Publication date: April 17, 2008
    Applicants: SNECMA MOTEURS, SNECMA SERVICES
    Inventors: Bertrand Saint-Ramond, Andre Malie, Christophe Chaput, Isabelle Porte, Cyrille Delage
  • Publication number: 20080090100
    Abstract: The invention relates to a composite target in the form of a bar made of ceramic powders and designed to be evaporated under an electron beam, the target comprising zirconia and at least one zirconia stabilizer. In characteristic manner, said target is wherein said zirconia stabilizer is at a molar content lying in the range 2% to 30% and wherein said zirconia is formed by more than 90% of a monoclinic phase. The invention is applicable to fabricating a ceramic thermal barrier of low thermal conductivity and high thermomechanical strength formed by evaporation under an electron beam.
    Type: Application
    Filed: December 10, 2007
    Publication date: April 17, 2008
    Applicants: SNECMA MOTEURS, SNECMA SERVICES
    Inventors: Bertrand Saint-Ramond, Andre Malie, Christophe Chaput, Isabelle Porte, Cyrille Delage
  • Publication number: 20080069959
    Abstract: The invention relates to a ceramic thermal barrier composition of low conductivity and high high-temperature strength. In characteristic manner, the composition comprises a zirconia base, at least one trivalent oxide enabling the zirconia to be stabilized and enabling the thermal conductivity of the zirconia to be reduced in optimum manner, and at least one pentavalent oxide enabling the content of oxygen vacancies to be reduced so as to make it substantially equal to that of a partially stabilized zirconia. Preferably, said trivalent oxide is present with a molar content constituted by a first portion enabling the zirconia to be stabilized partially and a second portion which introduces point defects into the lattice said pentavalent oxide is present with a molar concentration equal to said molar concentration of said second portion of the trivalent oxide. The invention is applicable to making a superalloy machine part having a ceramic coating with said composition, and possibly also a bonding underlayer.
    Type: Application
    Filed: November 23, 2007
    Publication date: March 20, 2008
    Applicants: SNECMA MOTEURS, SNECMA SERVICES
    Inventors: Berangere Leclercq, Remy Mevrel, Alban Azzopardi, Andre Malie, Bertrand Saint-Ramond
  • Patent number: 7335616
    Abstract: The invention relates to a composite target in the form of a bar made of ceramic powders and designed to be evaporated under an electron beam, the target comprising zirconia and at least one zirconia stabilizer. In characteristic manner, said target is wherein said zirconia stabilizer is at a molar content lying in the range 2% to 30% and wherein said zirconia is formed by more than 90% of a monoclinic phase. The invention is applicable to fabricating a ceramic thermal barrier of low thermal conductivity and high thermomechanical strength formed by evaporation under an electron beam.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: February 26, 2008
    Assignees: SNECMA Moteurs, SNECMA Services
    Inventors: Bertrand Saint-Ramond, Andre Malie, Christophe Chaput, Isabelle Porte, Cyrille Delage
  • Patent number: 7311981
    Abstract: A gas turbine part comprises a superalloy metal substrate, a bonding underlayer formed on the substrate and comprising an intermetallic compound of aluminum, nickel, and platinum, and a ceramic outer layer anchored on the alumina film formed on the bonding underlayer. The bonding underlayer essentially comprises an Ni—Pt—Al ternary system constituted by an aluminum-enriched ?-NiPt type structure, in particular an Ni—Pt—Al ternary system having a composition NizPtyAlx in which z, y, and x are such that 0.05?z?0.40, 0.30?y?0.60, and 0.15?x?0.40.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: December 25, 2007
    Assignee: SNECMA
    Inventors: Bertrand Saint Ramond, Manuel Silva, John Nicholls, Maxime Carlin
  • Publication number: 20070237971
    Abstract: The invention relates to a composite target in the form of a bar made of ceramic powders and designed to be evaporated under an electron beam, the target comprising zirconia and at least one zirconia stabilizer. In characteristic manner, said target is wherein said zirconia stabilizer is at a molar content lying in the range 2% to 30% and wherein said zirconia is formed by more than 90% of a monoclinic phase. The invention is applicable to fabricating a ceramic thermal barrier of low thermal conductivity and high thermomechanical strength formed by evaporation under an electron beam.
    Type: Application
    Filed: October 4, 2004
    Publication date: October 11, 2007
    Applicants: SNECMA MOTEURS, SNECMA SERVICES
    Inventors: Bertrand Saint-Ramond, Andre Malie, Christophe Chaput, Isabelle Porte, Cyrille Delage
  • Patent number: 7074506
    Abstract: A composite target is placed in a chamber. The target is in the form of a bar made of ceramic powder and it presents composition that is not uniform in the longitudinal direction. At least one substrate is introduced into the chamber in order to have formed thereon a ceramic coating with a composition gradient. The top face of the bar is swept by an electron beam so as to melt the bar material at its top face and form a vapor cloud in the chamber under low pressure. A bar is used that presents a plurality of superposed layers of different compositions, with the composition within each layer being uniform over the entire cross-section of the bar. Each layer of the bar comprises zirconia and at least one oxide selected from the oxides of nickel, cobalt, iron, yttrium, hafnium, cerium, lanthanum, tantalum, niobium, scandium, samarium, gadolinium, dysprosium, ytterbium, and aluminum.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: July 11, 2006
    Assignee: SNECMA Moteurs
    Inventors: Christophe Chaput, Cyrille Delage, Andre Malie, Isabelle Porte, Bertrand Saint-Ramond
  • Patent number: 7011894
    Abstract: A protective coating forming a thermal barrier is made on a superalloy metal substrate by forming a bonding underlayer on the substrate, the bonding underlayer being constituted by an intermetallic compound comprising at least aluminum and a metal from the platinum group, and by forming a ceramic outer layer which is anchored on a film of alumina present on the surface of the bonding underlayer. The bonding underlayer preferably has a thickness of less than 50 ?m and is made by using physical vapor deposition, e.g. by cathode sputtering, to deposit a plurality of individual layers alternately of aluminum and of a metal from the platinum group, and by causing the metals in the resulting layers to react together exothermally.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: March 14, 2006
    Assignee: Snecma Moteurs
    Inventors: Bertrand Saint Ramond, John Nicholls
  • Publication number: 20050132717
    Abstract: A gas turbine part comprises a superalloy metal substrate, a bonding underlayer formed on the substrate and comprising an intermetallic compound of aluminum, nickel, and platinum, and a ceramic outer layer anchored on the alumina film formed on the bonding underlayer. The bonding underlayer essentially comprises an Ni—Pt—Al ternary system constituted by an aluminum-enriched ?-NiPt type structure, in particular an Ni—Pt—Al ternary system having a composition NizPtyAlx in which z, y, and x are such that 0.05?z?0.40, 0.30?y?0.60, and 0.15?x?0.40.
    Type: Application
    Filed: October 28, 2004
    Publication date: June 23, 2005
    Applicant: SNECMA MOTEURS
    Inventors: Bertrand Saint Ramond, Manuel Silva, John Nicholls, Maxime Carlin
  • Publication number: 20050064225
    Abstract: The invention relates to a ceramic thermal barrier composition of low conductivity and high high-temperature strength. In characteristic manner, the composition comprises a zirconia base, at least one trivalent oxide enabling the zirconia to be stabilized and enabling the thermal conductivity of the zirconia to be reduced in optimum manner, and at least one pentavalent oxide enabling the content of oxygen vacancies to be reduced so as to make it substantially equal to that of a partially stabilized zirconia. Preferably, said trivalent oxide is present with a molar content constituted by a first portion enabling the zirconia to be stabilized partially and a second portion which introduces point defects into the lattice said pentavalent oxide is present with a molar concentration equal to said molar concentration of said second portion of the trivalent oxide. The invention is applicable to making a superalloy machine part having a ceramic coating with said composition, and possibly also a bonding underlayer.
    Type: Application
    Filed: August 5, 2004
    Publication date: March 24, 2005
    Applicants: SNECMA MOTEURS, SNECMA SERVICES
    Inventors: Berangere Leclercq, Remy Mevrel, Alban Azzopardi, Andre Malie, Bertrand Saint-Ramond
  • Publication number: 20040247922
    Abstract: A composite target is placed in a chamber. The target is in the form of a bar made of ceramic powder and it presents composition that is not uniform in the longitudinal direction. At least one substrate is introduced into the chamber in order to have formed thereon a ceramic coating with a composition gradient. The top face of the bar is swept by an electron beam so as to melt the bar material at its top face and form a vapor cloud in the chamber under low pressure. A bar is used that presents a plurality of superposed layers of different compositions, with the composition within each layer being uniform over the entire cross-section of the bar. Each layer of the bar comprises zirconia and at least one oxide selected from the oxides of nickel, cobalt, iron, yttrium, hafnium, cerium, lanthanum, tantalum, niobium, scandium, samarium, gadolinium, dysprosium, ytterbium, and aluminum.
    Type: Application
    Filed: July 14, 2004
    Publication date: December 9, 2004
    Applicant: SNECMA MOTEURS
    Inventors: Christophe Chaput, Cyrille Delage, Andre Malie, Isabelle Porte, Bertrand Saint-Ramond
  • Patent number: 6808761
    Abstract: A composite target is placed in a chamber. The target is in the form of a bar made of ceramic powder and it presents composition that is not uniform in the longitudinal direction. At least one substrate is introduced into the chamber in order to have formed thereon a ceramic coating with a composition gradient. The top face of the bar is swept by an electron beam so as to melt the bar material at its top face and form a vapor cloud in the chamber under low pressure. A bar is used that presents a plurality of superposed layers of different compositions, with the composition within each layer being uniform over the entire cross-section of the bar. Each layer of the bar comprises zirconia and at least one oxide selected from the oxides of nickel, cobalt, iron, yttrium, hafnium, cerium, lanthanum, tantalum, niobium, scandium, samarium, gadolinium, dysprosium, ytterbium, and aluminum.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: October 26, 2004
    Assignee: Snecma Moteurs
    Inventors: Christophe Chaput, Cyrille Delage, André Malie, Isabelle Porte, Bertrand Saint-Ramond
  • Publication number: 20040058200
    Abstract: A composite target is placed in a chamber. The target is in the form of a bar made of ceramic powder and it presents composition that is not uniform in the longitudinal direction. At least one substrate is introduced into the chamber in order to have formed thereon a ceramic coating with a composition gradient. The top face of the bar is swept by an electron beam so as to melt the bar material at its top face and form a vapor cloud in the chamber under low pressure. A bar is used that presents a plurality of superposed layers of different compositions, with the composition within each layer being uniform over the entire cross-section of the bar. Each layer of the bar comprises zirconia and at least one oxide selected from the oxides of nickel, cobalt, iron, yttrium, hafnium, cerium, lanthanum, tantalum, niobium, scandium, samarium, gadolinium, dysprosium, ytterbium, and aluminum.
    Type: Application
    Filed: April 17, 2003
    Publication date: March 25, 2004
    Applicant: SNECMA MOTEURS
    Inventors: Christophe Chaput, Cyrille Delage, Andre Malie, Isabelle Porte, Bertrand Saint-Ramond
  • Publication number: 20040028938
    Abstract: A protective coating forming a thermal barrier is made on a superalloy metal substrate by forming a bonding underlayer on the substrate, the bonding underlayer being constituted by an intermetallic compound comprising at least aluminum and a metal from the platinum group, and by forming a ceramic outer layer which is anchored on a film of alumina present on the surface of the bonding underlayer. The bonding underlayer preferably has a thickness of less than 50 &mgr;m and is made by using physical vapor deposition, e.g. by cathode sputtering, to deposit a plurality of individual layers alternately of aluminum and of a metal from the platinum group, and by causing the metals in the resulting layers to react together exothermally.
    Type: Application
    Filed: June 5, 2003
    Publication date: February 12, 2004
    Applicant: SNECMA MOTEURS
    Inventors: Bertrand Saint Ramond, John Nicholls
  • Patent number: 6645351
    Abstract: A protective coating forming a thermal barrier is made on a superalloy metal substrate by forming a bonding underlayer on the substrate, the bonding underlayer being constituted by an intermetallic compound comprising at least aluminum and a metal from the platinum group, and by forming a ceramic outer layer which is anchored on a film of alumina present on the surface of the bonding underlayer. The bonding underlayer preferably has a thickness of less than 50 &mgr;m and is made by using physical vapor deposition, e.g. by cathode sputtering, to deposit a plurality of individual layers alternately of aluminum and of a metal from the platinum group, and by causing the metals in the resulting layers to react together exothermally.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: November 11, 2003
    Assignee: SNECMA Moteurs
    Inventors: Bertrand Saint Ramond, John Nicholls