Patents by Inventor Takayuki Kurimura

Takayuki Kurimura 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: 11608303
    Abstract: Provided are a coated member in which damage of a coating film can be suppressed in a high temperature environment and the coating may be performed at low cost, and a method of manufacturing the same. A coated member includes a bond coat and a top coat sequentially laminated on a substrate made of a Si-based ceramic or a SiC fiber-reinforced SiC matrix composite, wherein the top coat includes a layer composed of a mixed phase of a (Y1-aLn1a)2Si2O7 solid solution (here, Ln1 is any one of Nd, Sm, Eu, and Gd) and Y2SiO5 or a (Y1-bLn1?b)2SiO5 solid solution (here, Ln1? is any one of Nd, Sm, Eu, and Gd), or a mixed phase of a (Y1-cLn2c)2Si2O7 solid solution (here, Ln2 is any one of Sc, Yb, and Lu) and Y2SiO5 or a (Y1-dLn2?d)2SiO5 solid solution (here, Ln2? is any one of Sc, Yb, and Lu).
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: March 21, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.
    Inventors: Mineaki Matsumoto, Takayuki Kurimura, Kosuke Nishikawa, Tadayuki Hanada
  • Publication number: 20230082214
    Abstract: A coating method includes depositing a slurry including a coarsely particulate ceramic and a finely particulate ceramic on a base material configured with an oxide-based ceramics matrix composite such that a proportion of coarse particles decreases towards a surface of the base material; forming a bond coating by performing a heat treatment on the base material on which the slurry has been deposited; and forming a top coating by thermally spraying a ceramic onto the bond coating. The oxide-based ceramics matrix composite is an alumina silica type oxide-based ceramics matrix composite. The coarsely particulate ceramic and the finely particulate ceramic are alumina-based powder.
    Type: Application
    Filed: November 16, 2022
    Publication date: March 16, 2023
    Inventors: Mineaki MATSUMOTO, Takayuki KURIMURA, Azusa TAMUGI, Tadayuki HANADA
  • Patent number: 11530168
    Abstract: A coating method includes depositing a slurry including a coarsely particulate ceramic and a finely particulate ceramic on a base material configured with an oxide-based ceramics matrix composite such that a proportion of coarse particles decreases towards a surface of the base material; forming a bond coating by performing a heat treatment on the base material on which the slurry has been deposited; and forming a top coating by thermally spraying a ceramic onto the bond coating. The oxide-based ceramics matrix composite is an alumina silica type oxide-based ceramics matrix composite. The coarsely particulate ceramic and the finely particulate ceramic are alumina-based powder.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: December 20, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.
    Inventors: Mineaki Matsumoto, Takayuki Kurimura, Azusa Tamugi, Tadayuki Hanada
  • Patent number: 11441447
    Abstract: A ring-segment surface-side member is included in a ring segment disposed at a position opposite to a turbine blade on a stationary side of a gas turbine, serves as a part of a combustion gas flow path through which combustion gas flows, and is formed of a ceramic matrix composite. The ring-segment surface-side member includes: a surface portion forming the combustion gas flow path; a turned-back portion including a first part extending outward in a radial direction of the gas turbine from the surface portion and a second part extending toward a central line of the surface portion from an end part of the first part; and a protrusion portion extending outward from the turned-back portion in the radial direction of the gas turbine.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: September 13, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yamato Shiramasa, Ryuta Ito, Takayuki Kurimura, Yoshifumi Tsuji
  • Publication number: 20220259111
    Abstract: Provided are a coated member in which damage of a coating film can be suppressed in a high temperature environment and the coating may be performed at low cost, and a method of manufacturing the same. A coated member includes a bond coat and a top coat sequentially laminated on a substrate made of a Si-based ceramic or a SiC fiber-reinforced SiC matrix composite, wherein the top coat includes a layer composed of a mixed phase of a (Y1-aLn1a) solid solution (here, Ln1 is any one of Nd, Sm, Eu, and Gd) and Y2SiO5 or a (Y1-bLn1?b)2SiO5 solid solution (here, Ln1? is any one of Nd, Sm, Eu, and Gd), or a mixed phase of a (Y1-cLn2c)2Si2O7 solid solution (here, Ln2 is any one of Sc, Yb, and Lu) and Y2SiO5 or a (Y1-dLn2?d)2SiO5 solid solution (here, Ln2? is any one of Sc, Yb, and Lu).
    Type: Application
    Filed: April 27, 2022
    Publication date: August 18, 2022
    Inventors: Mineaki MATSUMOTO, Takayuki KURIMURA, Kosuke NISHIKAWA, Tadayuki HANADA
  • Patent number: 11407688
    Abstract: Provided are a coating structure, a turbine part having the same, and a method for manufacturing the coating structure. The coating structure is provided on a surface of a base portion including a ceramic matrix composite. The coating structure is layered on the surface of the base portion, and includes a bond coat layer formed of a rare-earth silicate and a top coat layer layered on the bond coat layer. The residual stress present in the bond coat layer is compressive residual stress. The oxygen permeability coefficient of the bond coat layer is no greater than 10?9 kg·m?1·s?1 at a temperature of not lower than 1200° C. and a higher oxygen partial pressure of not less than 0.02 MPa. The bond coat layer may contain carbonitride particles or carbonitride whiskers.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: August 9, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takayuki Kurimura, Mineaki Matsumoto, Shuji Tanigawa, Yoshifumi Tsuji
  • Patent number: 11365159
    Abstract: Provided are a coated member in which damage of a coating film can be suppressed in a high temperature environment and the coating may be performed at low cost, and a method of manufacturing the same. A coated member includes a bond coat and a top coat sequentially laminated on a substrate made of a Si-based ceramic or a SiC fiber-reinforced SiC matrix composite, wherein the top coat includes a layer composed of a mixed phase of a (Y1-aLn1a)2Si2O7 solid solution (here, Ln1 is any one of Nd, Sm, Eu, and Gd) and Y2SiO5 or a (Y1-bLn1?b)2SiO5 solid solution (here, Ln1? is any one of Nd, Sm, Eu, and Gd), or a mixed phase of a (Y1-cLn2c)2Si2O7 solid solution (here, Ln2 is any one of Sc, Yb, and Lu) and Y2SiO5 or a (Y1-dLn2?d)2SiO5 solid solution (here, Ln2? is any one of Sc, Yb, and Lu).
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: June 21, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.
    Inventors: Mineaki Matsumoto, Takayuki Kurimura, Kosuke Nishikawa, Tadayuki Hanada
  • Publication number: 20210245460
    Abstract: A ceramic matrix composite member including a ceramic matrix composite reinforced by ceramic fiber, includes a body portion and a joint portion joined integrally to the body portion, the joint portion occupying a part of a surface of the ceramic matrix composite member, wherein the body portion includes at least one hole extending toward an inside of the body portion from a boundary surface between the body portion and the joint portion, and the at least one hole is filled with a matrix of the ceramic matrix composite, wherein the body portion includes a first region where a density of the ceramic fiber is relatively high and a second region where the density of the ceramic fiber is lower than that in the first region, and wherein the at least one hole exists so as to cut off a part of bundles of the ceramic fiber in the second region.
    Type: Application
    Filed: April 30, 2021
    Publication date: August 12, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masahiko Mega, Takayuki Kurimura, Taiji Torigoe, Mineaki Matsumoto
  • Patent number: 11059751
    Abstract: A coated member includes a heat-shielding coating layer made of a zirconia-dispersed silicate in which ytterbia-stabilized zirconia is precipitated as a dispersed phase in a matrix phase which is any one of a rare earth disilicate, a rare earth monosilicate, and a mixed phase of the rare earth disilicate and the rare earth monosilicate. The rare earth disilicate is a (Y1-a[Ln1]a)2Si2O7 solid solution wherein Ln1 is any one of Sc, Yb, and Lu, or a (Y1-c[Ln2]c)2Si2O7 solid solution wherein Ln2 is any one of Nd, Sm, Eu, and Gd. The rare earth monosilicate is Y2SiO5, [Ln1?]2SiO5, a (Y1-b[Ln1?]b)2SiO5 solid solution wherein Ln1? is any one of Sc, Yb, and Lu, or a (Y1-d[Ln2?]d)2SiO5 solid solution wherein Ln2? is any one of Nd, Sm, Eu, and Gd.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: July 13, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.
    Inventors: Mineaki Matsumoto, Takayuki Kurimura, Kosuke Nishikawa, Tadayuki Hanada
  • Patent number: 11034106
    Abstract: A method for repairing a target member including a ceramic matrix composite reinforced by ceramic fiber includes: a removal step of removing at least a part of a surface of the target member; an arrangement step of arranging a green body for repair which includes the ceramic fiber on a portion where the surface is removed in the removal step; an impregnation step of impregnating at least the portion of the target member where the green body for repair is disposed with slurry; and a sintering step of sintering the target member on which the green body for repair is disposed, after the impregnation step.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: June 15, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masahiko Mega, Takayuki Kurimura, Taiji Torigoe, Mineaki Matsumoto
  • Publication number: 20210140340
    Abstract: A ring-segment surface-side member is included in a ring segment disposed at a position opposite to a turbine blade on a stationary side of a gas turbine, serves as a part of a combustion gas flow path through which combustion gas flows, and is formed of a ceramic matrix composite. The ring-segment surface-side member includes: a surface portion forming the combustion gas flow path; a turned-back portion including a first part extending outward in a radial direction of the gas turbine from the surface portion and a second part extending toward a central line of the surface portion from an end part of the first part; and a protrusion portion extending outward from the turned-back portion in the radial direction of the gas turbine.
    Type: Application
    Filed: December 22, 2017
    Publication date: May 13, 2021
    Inventors: Yamato SHIRAMASA, Ryuta ITO, Takayuki KURIMURA, Yoshifumi TSUJI
  • Patent number: 10994301
    Abstract: A method for constructing an abradable coating comprises: a slurry layer formation step S2 in which a slurry layer 31 is formed on the surface of a base material 30 using a slurry containing ceramic particles and a solvent; a calcination step S3 in which the slurry layer 31 formed on the surface of the base material 30 is sintered and a sintered layer 35 to be a portion of an abradable coating layer 22 is formed; and a slurry removal step S5 in which extraneous slurry is removed after the abradable coating layer 22 has been formed on the surface of the base material 30, a plurality of the sintered layers 35 having been laminated in the abradable coating layer 22 through a plurality of repeated cycles of the slurry layer formation step S2 and the calcination step S3.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: May 4, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.
    Inventors: Takayuki Kurimura, Mineaki Matsumoto, Tadayuki Hanada, Azusa Tamugi
  • Publication number: 20200283346
    Abstract: A coating method includes depositing a slurry including a coarsely particulate ceramic and a finely particulate ceramic on a base material configured with an oxide-based ceramics matrix composite such that a proportion of coarse particles decreases towards a surface of the base material; forming a bond coating by performing a heat treatment on the base material on which the slurry has been deposited; and forming a top coating by thermally spraying a ceramic onto the bond coating. The oxide-based ceramics matrix composite is an alumina silica type oxide-based ceramics matrix composite. The coarsely particulate ceramic and the finely particulate ceramic are alumina-based powder.
    Type: Application
    Filed: August 1, 2017
    Publication date: September 10, 2020
    Inventors: Mineaki MATSUMOTO, Takayuki KURIMURA, Azusa TAMUGI, Tadayuki HANADA
  • Patent number: 10570754
    Abstract: A steam turbine rotor blade for forming a turbine rotor cascade of a steam turbine includes a rotor blade main body having a blade portion, a blade base portion and a first coupling portion, which has first facing surfaces, provided on opposite end sides of the blade portion, and a second coupling portion provided in an intermediate portion of the blade portion and having second facing surfaces. The steam turbine rotor blade also includes a coating layer which is made of a Co-based alloy having a single composition on a surface of at least one of the first and second facing surfaces with a diffusion layer having a thickness of 10 ?m or less provided between the coating layer and the surface.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: February 25, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Soichiro Tabata, Yuki Enomoto, Naoto Tochitani, Shunji Imai, Takayuki Kurimura, Naotoshi Okaya, Yuta Okimori, Haruhiko Asaka
  • Patent number: 10465548
    Abstract: A method for implementing an abradable coating comprising: a pattern-forming step in which, using a slurry containing ceramic particles and solvent, a slurry pattern is formed on the surface of a thermal barrier coating layer; and a firing step in which the slurry pattern formed on the surface of the thermal barrier coating layer is fired to form an abradable coating layer. A ceramic material included in the thermal barrier coating layer and ceramic particles included in the abradable coating layer are of the same type.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: November 5, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.
    Inventors: Takayuki Kurimura, Mineaki Matsumoto, Tadayuki Hanada, Azusa Tamugi
  • Publication number: 20190283271
    Abstract: A method includes a slurry preparing process of preparing a ceramic powder slurry, an impregnating process of impregnating the slurry into an inorganic fiber sheet to form an impregnated sheet, a sheet winding process of winding an impregnated sheet around a core to form a sheet-wound core, a pressing process of disposing the impregnated sheet between a first mold and a second mold opposed to each other and interposing a spacer therebetween at a portion where the impregnated sheet is not positioned, and then clamping the first mold and the second mold with a first fastener to come close in a direction facing each other, thereby applying pressure to the impregnated sheet, a drying process of heating and drying the impregnated sheet, and a firing process of firing the sheet after drying.
    Type: Application
    Filed: December 17, 2018
    Publication date: September 19, 2019
    Inventors: Yasuhiko TSURU, Mineaki MATSUMOTO, Amirthan GANESAN, Takayuki KURIMURA
  • Publication number: 20190143368
    Abstract: A method for constructing an abradable coating comprises: a slurry layer formation step S2 in which a slurry layer 31 is formed on the surface of a base material 30 using a slurry containing ceramic particles and a solvent; a calcination step S3 in which the slurry layer 31 formed on the surface of the base material 30 is sintered and a sintered layer 35 to be a portion of an abradable coating layer 22 is formed; and a slurry removal step S5 in which extraneous slurry is removed after the abradable coating layer 22 has been formed on the surface of the base material 30, a plurality of the sintered layers 35 having been laminated in the abradable coating layer 22 through a plurality of repeated cycles of the slurry layer formation step S2 and the calcination step S3.
    Type: Application
    Filed: June 6, 2017
    Publication date: May 16, 2019
    Inventors: Takayuki KURIMURA, Mineaki MATSUMOTO, Tadayuki HANADA, Azusa TAMUGI
  • Publication number: 20190119172
    Abstract: Provided are a coating structure, a turbine part having the same, and a method for manufacturing the coating structure. The coating structure is provided on a surface of a base portion including a ceramic matrix composite. The coating structure is layered on the surface of the base portion, and includes a bond coat layer formed of a rare-earth silicate and a top coat layer layered on the bond coat layer. The residual stress present in the bond coat layer is compressive residual stress. The oxygen permeability coefficient of the bond coat layer is no greater than 10?9 kg·m?1·s?1 at a temperature of not lower than 1200° C. and a higher oxygen partial pressure of not less than 0.02 MPa. The bond coat layer may contain carbonitride particles or carbonitride whiskers.
    Type: Application
    Filed: April 11, 2017
    Publication date: April 25, 2019
    Inventors: Takayuki KURIMURA, Mineaki MATSUMOTO, Shuji TANIGAWA, Yoshifumi TSUJI
  • Publication number: 20190041061
    Abstract: A joined structure includes a joint section in which a plurality of tubular bodies formed of a ceramic-based composite material are joined to each other such that end surfaces of the tubular bodies abut each other via an intermediate material. The joint section is configured such that each of the end surfaces of the joined tubular bodies is inclined from one of an inner surface and an outer surface of the tubular body toward the other.
    Type: Application
    Filed: November 17, 2016
    Publication date: February 7, 2019
    Inventors: Takayuki KURIMURA, Mineaki MATSUMOTO, Yasuhiko TSURU, Kosuke NISHIKAWA, Mariko HIROKANE
  • Publication number: 20190016072
    Abstract: A method for repairing a target member including a ceramic matrix composite reinforced by ceramic fiber includes: a removal step of removing at least a part of a surface of the target member; an arrangement step of arranging a green body for repair which includes the ceramic fiber on a portion where the surface is removed in the removal step; an impregnation step of impregnating at least the portion of the target member where the green body for repair is disposed with slurry; and a sintering step of sintering the target member on which the green body for repair is disposed, after the impregnation step.
    Type: Application
    Filed: July 6, 2018
    Publication date: January 17, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masahiko Mega, Takayuki Kurimura, Taiji Torigoe, Mineaki Matsumoto