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: 11608303Abstract: 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: GrantFiled: April 27, 2022Date of Patent: March 21, 2023Assignee: MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.Inventors: Mineaki Matsumoto, Takayuki Kurimura, Kosuke Nishikawa, Tadayuki Hanada
-
Publication number: 20230082214Abstract: 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: ApplicationFiled: November 16, 2022Publication date: March 16, 2023Inventors: Mineaki MATSUMOTO, Takayuki KURIMURA, Azusa TAMUGI, Tadayuki HANADA
-
Patent number: 11530168Abstract: 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: GrantFiled: August 1, 2017Date of Patent: December 20, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.Inventors: Mineaki Matsumoto, Takayuki Kurimura, Azusa Tamugi, Tadayuki Hanada
-
Patent number: 11441447Abstract: 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: GrantFiled: December 22, 2017Date of Patent: September 13, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yamato Shiramasa, Ryuta Ito, Takayuki Kurimura, Yoshifumi Tsuji
-
Publication number: 20220259111Abstract: 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: ApplicationFiled: April 27, 2022Publication date: August 18, 2022Inventors: Mineaki MATSUMOTO, Takayuki KURIMURA, Kosuke NISHIKAWA, Tadayuki HANADA
-
Patent number: 11407688Abstract: 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: GrantFiled: April 11, 2017Date of Patent: August 9, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Takayuki Kurimura, Mineaki Matsumoto, Shuji Tanigawa, Yoshifumi Tsuji
-
Patent number: 11365159Abstract: 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: GrantFiled: February 9, 2016Date of Patent: June 21, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.Inventors: Mineaki Matsumoto, Takayuki Kurimura, Kosuke Nishikawa, Tadayuki Hanada
-
Publication number: 20210245460Abstract: 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: ApplicationFiled: April 30, 2021Publication date: August 12, 2021Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Masahiko Mega, Takayuki Kurimura, Taiji Torigoe, Mineaki Matsumoto
-
Patent number: 11059751Abstract: 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: GrantFiled: February 9, 2016Date of Patent: July 13, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.Inventors: Mineaki Matsumoto, Takayuki Kurimura, Kosuke Nishikawa, Tadayuki Hanada
-
Patent number: 11034106Abstract: 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: GrantFiled: July 6, 2018Date of Patent: June 15, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Masahiko Mega, Takayuki Kurimura, Taiji Torigoe, Mineaki Matsumoto
-
Publication number: 20210140340Abstract: 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: ApplicationFiled: December 22, 2017Publication date: May 13, 2021Inventors: Yamato SHIRAMASA, Ryuta ITO, Takayuki KURIMURA, Yoshifumi TSUJI
-
Patent number: 10994301Abstract: 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: GrantFiled: June 6, 2017Date of Patent: May 4, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.Inventors: Takayuki Kurimura, Mineaki Matsumoto, Tadayuki Hanada, Azusa Tamugi
-
Publication number: 20200283346Abstract: 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: ApplicationFiled: August 1, 2017Publication date: September 10, 2020Inventors: Mineaki MATSUMOTO, Takayuki KURIMURA, Azusa TAMUGI, Tadayuki HANADA
-
Patent number: 10570754Abstract: 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: GrantFiled: November 5, 2015Date of Patent: February 25, 2020Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Soichiro Tabata, Yuki Enomoto, Naoto Tochitani, Shunji Imai, Takayuki Kurimura, Naotoshi Okaya, Yuta Okimori, Haruhiko Asaka
-
Patent number: 10465548Abstract: 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: GrantFiled: January 5, 2017Date of Patent: November 5, 2019Assignee: MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.Inventors: Takayuki Kurimura, Mineaki Matsumoto, Tadayuki Hanada, Azusa Tamugi
-
Publication number: 20190283271Abstract: 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: ApplicationFiled: December 17, 2018Publication date: September 19, 2019Inventors: Yasuhiko TSURU, Mineaki MATSUMOTO, Amirthan GANESAN, Takayuki KURIMURA
-
Publication number: 20190143368Abstract: 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: ApplicationFiled: June 6, 2017Publication date: May 16, 2019Inventors: Takayuki KURIMURA, Mineaki MATSUMOTO, Tadayuki HANADA, Azusa TAMUGI
-
Publication number: 20190119172Abstract: 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: ApplicationFiled: April 11, 2017Publication date: April 25, 2019Inventors: Takayuki KURIMURA, Mineaki MATSUMOTO, Shuji TANIGAWA, Yoshifumi TSUJI
-
Publication number: 20190041061Abstract: 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: ApplicationFiled: November 17, 2016Publication date: February 7, 2019Inventors: Takayuki KURIMURA, Mineaki MATSUMOTO, Yasuhiko TSURU, Kosuke NISHIKAWA, Mariko HIROKANE
-
Publication number: 20190016072Abstract: 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: ApplicationFiled: July 6, 2018Publication date: January 17, 2019Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Masahiko Mega, Takayuki Kurimura, Taiji Torigoe, Mineaki Matsumoto