Patents by Inventor Katsuyasu Hananaka
Katsuyasu Hananaka 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: 7998581Abstract: A solid particle erosion resistant surface treated coating has a solid particle erosion resistance that is largely enhanced and a rotating member having the coating gains oxidation resistance without deteriorating a fatigue strength. Also, a rotating machine can have this coating applied thereto. The solid particle erosion resistant surface treated coating has a nitrided hard layer formed on a surface of a base material and a PVD (physical vapor deposition) hard layer of at least one layer formed on the nitrided hard layer by a PVD method. Deformation of the base material by collisions by solid particles is prevented and cracking of the coating is prevented. Thereby, the solid particle erosion resistance is secured, life of the solid particle erosion resistant surface treated coating can be increased and oxidation resistance and fatigue strength are enhanced.Type: GrantFiled: January 18, 2006Date of Patent: August 16, 2011Assignee: Mitsubishi Heavy Industires, Ltd.Inventors: Toyoaki Yasui, Yoshikazu Yamada, Shugo Iwasaki, Katsuyasu Hananaka, Kyoichi Ikeno
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Patent number: 7947381Abstract: The present invention provides parts of a rotation machine which effectively prevent particulates, such as silica, iron oxide, and other particles, contained in a gas to adhere to the rotating machines which work with the gases containing the particulates. An intermediated metal-plated film and a plated film containing fluorocarbon polymer particles provided on the intermediate metal-plated film are deposited on the surfaces of moving blades used in a steam turbine. The plated film containing the fluorocarbon polymer particles includes fluorocarbon polymer particles made of any of Ni-based metals and a plated matrix, and some of the fluorocarbon polymer particles are exposed at the surfaces of the plated matrix.Type: GrantFiled: February 24, 2006Date of Patent: May 24, 2011Assignees: Mitsubishi Heavy Industries, Ltd., Japan Kanigen Co. Ltd.Inventors: Toyoaki Yasui, Yoshikazu Yamada, Katsuyasu Hananaka, Satoshi Hata, Yuzo Tsurusaki, Osamu Isumi, Kazuhide Saito, Kenichi Nemoto, Yukiharu Suzuki
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Publication number: 20090324405Abstract: An object is to provide a method for forming a superior corrosion-resistant plating layer by sealing penetrating pinholes formed in an electroless plating layer. There are provided a first plating step of performing electroless Ni—P plating on a base material (1); an etching step of etching a surface of a first plating layer (3) formed by the first plating step; and a second plating step of performing electroless Ni—P plating to form a second plating layer (5) on the first plating layer (3) processed by the etching step.Type: ApplicationFiled: November 15, 2007Publication date: December 31, 2009Inventors: Toyoaki Yasui, Akinori Tasaki, Katsuyasu Hananaka, Yuya Konno, Kenji Itagaki
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Publication number: 20090123737Abstract: A solid particle erosion resistant surface treated coat is provided by which a solid, particle erosion resistance is largely enhanced and a rotating member is given with an oxidation resistance without deteriorating a fatigue strength. Also, a rotating machine, such as a steam turbine, axial compressor or the like, applied with this coat is provided. The solid particle erosion resistant surface treated coat comprises a nitrided hard layer formed on a surface of base material and a PVD (physical vapor deposition) hard layer of at least one layer formed on the nitrided hard layer by a PVD method. The nitrided hard layer has a thickness of at least 30 ?m. The PVD hard layer has a total thickness of at least 10 ?m. Deformation of the base material by collisions by solid particles is prevented and crack of the coat comprising the nitrided hard layer formed on the base material and the PVD hard layer formed on the nitrided hard layer is prevented.Type: ApplicationFiled: January 18, 2006Publication date: May 14, 2009Inventors: Toyoaki Yasui, Yoshikazu Yamada, Shugo Iwasaki, Katsuyasu Hananaka, Kyoichi Ikeno
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Patent number: 7449253Abstract: A high wear resistant hard film is characterized by including a coating layer consisting of a metal nitride, which is formed on the outside surface of an object to be treated; a substrate layer consisting of a nitride of Ti or Cr, which is provided between the coating layer and the object to be treated; and an intermediate layer containing compositions of the coating layer in contact with the intermediate layer and the substrate layer, which is provided at an interface between the coating layer and the substrate layer, and a tool is provided with the film. There is provided a hard film having excellent oxidation resistance even 1000° C. or higher and also having very high wear resistance.Type: GrantFiled: May 7, 2007Date of Patent: November 11, 2008Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Masanobu Misaki, Yukio Kodama, Yozo Nakamura, Yoshihiro Wada, Toyoaki Yasui, Toshirou Kobayashi, Katsuyasu Hananaka
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Patent number: 7410701Abstract: A coating layer is provided on a surface of the moving blades of a rotary machine. The coating layer includes a spray layer on the base material of the moving blades and a fluorocarbon resin layer on the spray layer. The spray layer is porous. The fluorocarbon resin layer is made of fluorocarbon resin. The fluorocarbon resin layer also contains an inorganic substance that is exposed on the surface of the fluorocarbon resin layer.Type: GrantFiled: February 9, 2006Date of Patent: August 12, 2008Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Toyoaki Yasui, Yoshikazu Yamada, Katsuyasu Hananaka, Satoshi Hata, Yuzo Tsurusaki, Osamu Isumi
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Publication number: 20070292712Abstract: A high wear resistant hard film is characterized by including a coating layer consisting of a metal nitride, which is formed on the outside surface of an object to be treated; a substrate layer consisting of a nitride of Ti or Cr, which is provided between the coating layer and the object to be treated; and an intermediate layer containing compositions of the coating layer in contact with the intermediate layer and the substrate layer, which is provided at an interface between the coating layer and the substrate layer, and a tool is provided with the film. There is provided a hard film having excellent oxidation resistance even 1000° C. or higher and also having very high wear resistance.Type: ApplicationFiled: May 7, 2007Publication date: December 20, 2007Inventors: Masanobu Misaki, Yukio Kodama, Yozo Nakamura, Yoshihiro Wada, Toyoaki Yasui, Toshirou Kobayashi, Katsuyasu Hananaka
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Patent number: 7226659Abstract: A high wear resistant hard film is characterized by including a coating layer consisting of a metal nitride, which is formed on the outside surface of an object to be treated; a substrate layer consisting of a nitride of Ti or Cr, which is provided between the coating layer and the object to be treated; and an intermediate layer containing compositions of the coating layer in contact with the intermediate layer and the substrate layer, which is provided at an interface between the coating layer and the substrate layer, and a tool is provided with the film. There is provided a hard film having excellent oxidation resistance even at 1000° C. or higher and also having very high wear resistance.Type: GrantFiled: June 15, 2004Date of Patent: June 5, 2007Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Masanobu Misaki, Yukio Kodama, Yozo Nakamura, Yoshihiro Wada, Toyoaki Yasui, Toshirou Kobayashi, Katsuyasu Hananaka
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Publication number: 20070054126Abstract: The present invention provides parts of a rotation machine, which effectively prevent particulates, such as silica, iron oxide, and other particles, contained in a gas to adhere, in the rotating machines, which treat with the gases containing the particulates. An intermediated metal-plated film 11 and the plated film 12 containing the fluorocarbon polymer particles provided on the intermediate metal-plated film 11 are deposited on the surfaces of moving blades 23 used in a steam turbine. The plated film 12 containing the fluorocarbon polymer particles includes fluorocarbon polymer particles 13P made of any of Ni-based metals and a plated matrix 13M, and some of the fluorocarbon polymer particles 13P are exposed from the surfaces of the plated matrix 13M.Type: ApplicationFiled: February 24, 2006Publication date: March 8, 2007Inventors: Toyoaki Yasui, Yoshikazu Yamada, Katsuyasu Hananaka, Satoshi Hata, Yuzo Tsurusaki, Osamu Isumi, Kazuhide Saito, Kenichi Nemoto, Yukiharu Suzuki
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Publication number: 20060228541Abstract: A coating layer is provided on a surface of the moving blades of a rotary machine. The coating layer includes a spray layer that rests on the base material of the moving blades, and a fluorocarbon resin layer that rests on the spray layer. The spray layer is porous. The fluorocarbon resin layer is made of fluorocarbon resin. The fluorocarbon resin contains an inorganic substance that is exposed on the surface of the fluorocarbon resin.Type: ApplicationFiled: February 9, 2006Publication date: October 12, 2006Inventors: Toyoaki Yasui, Yoshikazu Yamada, Katsuyasu Hananaka, Satoshi Hata, Yuzo Tsurusaki, Osamu Isumi
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Publication number: 20050019613Abstract: A high wear resistant hard film is characterized by including a coating layer consisting of a metal nitride, which is formed on the outside surface of an object to be treated; a substrate layer consisting of a nitride of Ti or Cr, which is provided between the coating layer and the object to be treated; and an intermediate layer containing compositions of the coating layer in contact with the intermediate layer and the substrate layer, which is provided at an interface between the coating layer and the substrate layer, and a tool is provided with the film. There is provided a hard film having excellent oxidation resistance even at 1000° C. or higher and also having very high wear resistance.Type: ApplicationFiled: June 15, 2004Publication date: January 27, 2005Inventors: Masanobu Misaki, Yukio Kodama, Yozo Nakamura, Yoshihiro Wada, Toyoaki Yasui, Toshirou Kobayashi, Katsuyasu Hananaka