Patents by Inventor Marie-Pierre Bacos

Marie-Pierre Bacos 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: 10549378
    Abstract: The invention relates to a method for producing a nickel aluminide coating on a metal substrate. The method includes the following steps: a) coating the substrate with a nickel deposit; b) applying an aluminum sheet onto the nickel deposit from step a) so as to form an assembly made up of the substrate coated with the nickel deposit and the aluminum sheet; and c) subjecting said assembly to heat treatment at a temperature that is lower than the melting point of aluminum, and at a low pressure so as to induce a reaction between the aluminum and the nickel and thus form a ?-NiAl nickel aluminide layer mounted on a nickel layer. The invention is particularly of use for protecting the materials used in turbines of aircraft engines.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: February 4, 2020
    Assignee: Office National D'Etudes et de Recherches Aérospatiales
    Inventors: Pascal Bilhe, Marie-Pierre Bacos, Pierre Josso
  • Patent number: 10267151
    Abstract: The invention relates to a method for repairing a thermal barrier of a component comprising a substrate coated with such a thermal barrier, said substrate being made of a high-performance alloy, said thermal barrier being adhered to the alloy and having lower thermal conductivity than the alloy, the thermal barrier including at least one ceramic, one region of the thermal barrier being a region to be repaired, wherein said method includes the following steps: a) defining the region to be repaired, using a mask which protects the other regions of the thermal barrier; b) injecting a carrier gas loaded with droplets of ceramic precursor into a plasma discharge inside a plasma chamber of a plasma reactor containing the component to be repaired, while making the concentration of ceramic precursor in the carrier gas dependent on at least one parameter of the reactor selected from among: the pressure of the plasma chamber, the power of the plasma generator and the diameter of the precursor droplets, in order to cont
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: April 23, 2019
    Assignee: Office National D'Etudes et de Recherches Aerospatiales
    Inventors: Marie-Pierre Bacos, Odile Lavigne, Catherine Rio, Marie-Helene Vidal-Setif, Frederic Rousseau, Daniel Morvan
  • Patent number: 10100396
    Abstract: The invention relates to a method and system for forming a layer of oxide on a pervious component made of a material or a stack of materials that are stable at 400° C., said component including an outer surface to be coated and at least one pore with a diameter of 50 to 1000 ?m leading onto said outer surface.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: October 16, 2018
    Assignee: Office National D'Etudes et de Recherches Aerospatiales
    Inventors: Marie-Pierre Bacos, Frederic Rousseau, Daniel Morvan
  • Publication number: 20170044901
    Abstract: The invention relates to a method for repairing a thermal barrier of a component comprising a substrate coated with such a thermal barrier, said substrate being made of a high-performance alloy, said thermal barrier being adhered to the alloy and having lower thermal conductivity than the alloy, the thermal barrier including at least one ceramic, one region of the thermal barrier being a region to be repaired, wherein said method includes the following steps: a) defining the region to be repaired, using a mask which protects the other regions of the thermal barrier; b) injecting a carrier gas loaded with droplets of ceramic precursor into a plasma discharge inside a plasma chamber of a plasma reactor containing the component to be repaired, while making the concentration of ceramic precursor in the carrier gas dependent on at least one parameter of the reactor selected from among: the pressure of the plasma chamber, the power of the plasma generator and the diameter of the precursor droplets, in order to cont
    Type: Application
    Filed: December 1, 2014
    Publication date: February 16, 2017
    Inventors: Marie-Pierre Bacos, Odile Lavigne, Catherine Rio, Marie-Helene Vidal-Setif, Frederic Rousseau, Daniel Morvan
  • Publication number: 20170002452
    Abstract: The invention relates to a method and system for forming a layer of oxide on a pervious component made of a material or a stack of materials that are stable at 400° C., said component including an outer surface to be coated and at least one pore with a diameter of 50 to 1000 ?m leading onto said outer surface.
    Type: Application
    Filed: December 1, 2014
    Publication date: January 5, 2017
    Inventors: Marie-Pierre Bacos, Frederic Rousseau, Daniel Morvan
  • Publication number: 20150056467
    Abstract: The invention relates to a method for producing a nickel aluminide coating on a metal substrate. Said method includes the following steps: a) coating the substrate with a nickel deposit; b) applying an aluminum sheet onto the nickel deposit from step a) so as to form an assembly made up of the substrate coated with the nickel deposit and the aluminum sheet; and c) subjecting said assembly to heat treatment at a temperature that is lower than the melting point of aluminum, and at a low pressure so as to induce a reaction between the aluminum and the nickel and thus form a ?-NiAl nickel aluminide layer mounted on a nickel layer. The invention is particularly of use for protecting the materials used in turbines of aircraft engines.
    Type: Application
    Filed: March 27, 2013
    Publication date: February 26, 2015
    Inventors: Pascal Bilhe, Marie-Pierre Bacos, Pierre Josso
  • Patent number: 8647713
    Abstract: A method for forming a protective coating containing aluminum on the surface of a metal part, wherein the part is contacted with a carburizer made of an aluminum alloy, at a treatment temperature and in a chamber, the atmosphere of which contains an active gas which reacts with the carburizer to form a gaseous aluminum halide, which decomposes upon contacting the part while depositing aluminum metal thereon. In the method the aluminum alloy of the carburizer includes at least one element, zirconium and/or hafnium, the active gas reacting with the carburizer to also form a halide of the reactive element which decomposes upon contacting the part while depositing the element thereon at the same time as the aluminum.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: February 11, 2014
    Assignees: SNECMA, Onera
    Inventors: Jerome Brossier, Justine Menuey, Annie Pasquet, Serge Naveos, Marie Pierre Bacos, Pierre Josso
  • Patent number: 8617323
    Abstract: The method according to the invention comprises the following operations: a) prepare a substrated formed of the said intermetallic alloy; b) deposit a coating of gold on the surface to be protected of the substrate; and c) subject the substrate thus equipped with the gold coating to annealing in controlled conditions in order to bring about limited diffusion of the gold into the surface to be protected. The invention is applicable in particular to parts of gas turbines, e.g. parts of aircraft engines.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: December 31, 2013
    Assignee: ONERA (Office National d'Etudes et de Recherches Aerospatiales)
    Inventors: Marie-Pierre Bacos, Pierre Josso
  • Publication number: 20130330540
    Abstract: The invention relates to a method for forming a protective coating against high-temperature oxidation on a surface of a refractory composite material based on silicon and niobium, wherein chromium present on the surface to be protected is reacted with a reactive gas which contains silicon and oxygen in order to produce a composite coating having two phases, a first phase of which is an oxide phase based on silica which has viscoplastic properties and a second phase of which is based on silicon, chromium and oxygen, and wherein the first phase and second phase are coalesced at high temperature, which allows a protective coating to be formed in which the second phase acts as a reservoir to reform, during operation, the first phase by means of reaction with an oxidising gas. The invention is preferably used in the field of aeronautical engines.
    Type: Application
    Filed: June 20, 2013
    Publication date: December 12, 2013
    Inventors: Marie-Pierre BACOS, Pierre JOSSO
  • Patent number: 8591992
    Abstract: The invention relates to a method for forming a protective coating against high-temperature oxidation on a surface of a refractory composite material based on silicon and niobium, wherein chromium present on the surface to be protected is reacted with a reactive gas which contains silicon and oxygen in order to produce a composite coating having two phases, a first phase of which is an oxide phase based on silica which has viscoplastic properties and a second phase of which is based on silicon, chromium and oxygen, and wherein the first phase and second phase are coalesced at high temperature, which allows a protective coating to be formed in which the second phase acts as a reservoir to reform, during operation, the first phase by means of reaction with an oxidising gas. The invention is preferably used in the field of aeronautical engines.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: November 26, 2013
    Assignee: ONERA (Office National d'Etudes et de Recherches Aérospatiales
    Inventors: Marie-Pierre Bacos, Pierre Josso
  • Publication number: 20120177823
    Abstract: A method for forming a protective coating containing aluminum on the surface of a metal part, wherein the part is contacted with a carburizer made of an aluminum alloy, at a treatment temperature and in a chamber, the atmosphere of which contains an active gas which reacts with the carburizer to form a gaseous aluminum halide, which decomposes upon contacting the part while depositing aluminum metal thereon. In the method the aluminum alloy of the carburizer includes at least one element, zirconium and/or hafnium, the active gas reacting with the carburizer to also form a halide of the reactive element which decomposes upon contacting the part while depositing the element thereon at the same time as the aluminum.
    Type: Application
    Filed: September 20, 2010
    Publication date: July 12, 2012
    Applicants: ONERA, SNECMA
    Inventors: Jerome Brossier, Justine Menuey, Annie Pasquet, Serge Naveos, Marie Pierre Bacos, Pierre Josso
  • Publication number: 20120082857
    Abstract: The invention relates to a method for forming a protective coating against high-temperature oxidation on a surface of a refractory composite material based on silicon and niobium, wherein chromium present on the surface to be protected is reacted with a reactive gas which contains silicon and oxygen in order to produce a composite coating having two phases, a first phase of which is an oxide phase based on silica which has viscoplastic properties and a second phase of which is based on silicon, chromium and oxygen, and wherein the first phase and second phase are coalesced at high temperature, which allows a protective coating to be formed in which the second phase acts as a reservoir to reform, during operation, the first phase by means of reaction with an oxidising gas. The invention is preferably used in the field of aeronautical engines.
    Type: Application
    Filed: September 23, 2011
    Publication date: April 5, 2012
    Inventors: Marie-Pierre Bacos, Pierre Josso
  • Patent number: 7968207
    Abstract: The invention relates to a method of producing and joining superalloy balls by means of brazing and to objects produced with such joints. According to one aspect of the invention, an alloy powder covered with a brazing solder is bonded to a spherical core and subsequently transformed into a continuous alloy layer by means of brazing.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: June 28, 2011
    Assignee: ONERA (Office National d'Etudes et de Recherches Aerospatiales)
    Inventors: Myriam Douin, Marie-Pierre Bacos, Alexandra Boyer, Aurélie Gregoire, Pierre Josso, Sébastien Mercier, Ariel Moriel, Jason Nadler, Serge Naveos, Catherine Rio
  • Patent number: 7963364
    Abstract: A structural element used for attenuating aviation turbine noise is provided with pores (1, 2) embodied in the form of cylindrical channels which are open on the first ends inside the turbine housing and closed on the opposite ends thereof, wherein the diameter (D) of each channel ranges approximately from 0.1 to 0.3 mm, each channel is remote at least along one part of the length thereof from the closest neighbors at a minimum distance ranging approximately from 0.02 to 0.3 mm and the ratio between the channel length and diameter thereof is of the order of 102.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: June 21, 2011
    Assignee: ONERA (Office National d'Etudes et de Recherches Aerospatiales)
    Inventors: Jason Nadler, Florin Paun, Pierre Josso, Marie-Pierre Bacos, Stéphane Gasser
  • Publication number: 20100221570
    Abstract: A structural element used for attenuating aviation turbine noise is provided with pores (1, 2) embodied in the form of cylindrical channels which are open on the first ends inside the turbine housing and closed on the opposite ends thereof, wherein the diameter (D) of each channel ranges approximately from 0.1 to 0.3 mm, each channel is remote at least along one part of the length thereof from the closest neighbours at a minimum distance ranging approximately from 0.02 to 0.3 mm and the ratio between the channel length and diameter thereof is of the order of 102.
    Type: Application
    Filed: December 21, 2006
    Publication date: September 2, 2010
    Inventors: Jason Nadler, Florin Paun, Pierre Josso, Marie-Pierre Bacos, Stéphane Gasser
  • Patent number: 7749614
    Abstract: The invention relates to a method of brazing a Ti—Al alloy. According to the invention, a layer of nickel (2) is disposed between a part (1) which is made from titanium aluminide and a brazing sheet (3), such as to enable: the aforementioned part (1) to be brazed to another metallic material (4) without the aluminium diffusing from one to the other; and a stable link with good mechanical strength to be produced. The invention can be used for the assembly of aircraft engine parts which are made from titanium aluminide and nickel-based superalloy.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: July 6, 2010
    Assignee: ONERA (Office National d'Etudes et de Recherches Aerospatiales)
    Inventors: Carine Hoffmann, Marie-Pierre Bacos, Pierre Josso, Serge Naveos
  • Patent number: 7608301
    Abstract: This relates to an improvement to the process of aluminization or activated cementation in which a donor cement containing the aluminium is attacked at high temperature and in a neutral or reducing atmosphere by a gaseous ammonium halide to form a gaseous aluminium halide which decomposes on contact with a nickel-based substrate depositing aluminium metal thereon. According to the invention the aluminium halide is at least partly replaced by a zirconium halide leading to the inclusion of zirconium in the deposit. Improvement in the protection of the hot parts of aircraft engines made of nickel-based superalloy. No figure is to be published.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: October 27, 2009
    Assignees: ONERA (Office National d'Etudes et de Recherches Aerospatiales), SNECMA Moteurs
    Inventors: Marie-Pierre Bacos, Pierre Josso, Serge Naveos
  • Patent number: 7544322
    Abstract: Hollow metal spheres are heated in a high vacuum in the presence of an organic substance, at a temperature at least equal to the melting point of a eutectic between carbon and the metallic constituents of the said spheres.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: June 9, 2009
    Assignee: ONERA (Office National d'Etudes et de Recherches aerospatiales)
    Inventors: Jason Nadler, Pierre Josso, Marie-Pierre Bacos, Florin Paun
  • Publication number: 20090130478
    Abstract: The invention relates to a method of producing and joining superalloy balls by means of brazing and to objects produced with such joints. According to the invention, an alloy powder covered with a brazing solder is bonded to a spherical core and subsequently transformed into a continuous alloy layer by means of brazing.
    Type: Application
    Filed: July 7, 2006
    Publication date: May 21, 2009
    Inventors: Myriam Douin, Marie-Pierre Bacos, Alexandra Boyer, Aurelie Gregoire, Pierre Josso, Sebastien Mercier, Ariel Moriel, Jason Nadler, Serge Naveos, Catherine Rio
  • Patent number: 7482039
    Abstract: In order to protect a monocrystalline superalloy rich in rhenium against corrosion whilst avoiding the formation of progressive secondary reaction zones, a layer (3) formed of tungsten and cobalt is deposited on its surface before aluminisation treatment.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: January 27, 2009
    Assignee: ONERA (Office National d'Etudes et de Recherches Aerospatiales)
    Inventors: Marie-Pierre Bacos, Pierre Josso