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公开(公告)号：US20200248284A1
公开(公告)日：2020-08-06
申请号：US16594375
申请日：2019-10-07
发明人： Hidemi KATO , Soo-hyun JOO
摘要： A porous metal having a much smaller ligament size is provided. The porous metal includes a crystal of an alloy, the alloy containing n or more kinds of elements, n being an integer of 3 or more, the alloy having a composition of each element of from {(100/n)−(75/n)) at % to {(100/n)+(75/n)} at %, and the porous metal having a ligament size of 220 nm or less. The alloy is preferably a high entropy alloy or a medium entropy alloy. In addition, the alloy preferably contains a solid solution of the respective elements.
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2.发明申请公开(公告)号：US20190047078A1
公开(公告)日：2019-02-14
申请号：US16077510
申请日：2017-01-16
发明人： Takeshi WADA , Hidemi KATO
摘要： A method for producing a nano-composite metal member, by which a nano-composite metal member can be readily produced and the production cost can be reduced, and a method for joining phase-separated metal solids using the principle same as that of the former method are provided. A nano-composite metal member is obtained by bringing a solid metal body comprising a first component into contact with a solid metal material comprising a compound, an alloy or a non-equilibrium alloy that simultaneously contains a second component and a third component having a positive heat of mixing and a negative heat of mixing, respectively, relative to the first component, and then performing heat treatment at a predetermined temperature for a predetermined length of time, so as to cause interdiffusion between the first component and the third component.
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公开(公告)号：US20190058197A1
公开(公告)日：2019-02-21
申请号：US16168173
申请日：2018-10-23
发明人： Hidemi KATO , Seung-Geun YU , Takeshi WADA
IPC分类号： H01M4/66 , C01B32/30 , C01B32/348 , C01B32/20 , H01M4/88 , H01M4/587 , C01B32/336
摘要： A method for producing porous graphite capable of realizing higher durability, output and capacity, and porous graphite. A carbon member having microvoids is obtained by a dealloying step for selectively eluting other non-carbon main components into a metal bath by immersing a carbon-containing material, composed of a compound including carbon or an alloy or non-equilibrium alloy, in the metal bath, wherein the metal bath has a solidifying point lower than the melting point of the carbon-containing material, and is controlled to a temperature lower than the minimum value of a liquidus temperature within a composition fluctuation range extending from the carbon-containing material to carbon by reducing the other non-carbon main components. The carbon member obtained in the dealloying step is graphitized by heating in a graphitization step. The carbon member graphitized in the graphitization step is subjected to activation treatment by an activation step.
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公开(公告)号：US20190093238A1
公开(公告)日：2019-03-28
申请号：US16077569
申请日：2017-01-16
发明人： Takeshi WADA , Hidemi KATO
摘要： A method for producing a porous member, whereby a member having smaller microgaps can be produced, and additionally, the outermost surface alone can be made porous and a porous layer can be formed on the surface while maintaining the characteristics of portions in which no porous layer is formed, is provided.
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公开(公告)号：US20190084834A1
公开(公告)日：2019-03-21
申请号：US16078470
申请日：2016-12-07
发明人： Hidemi KATO , Masashi TSUDA , Yugo TAKANO , Yosuke SUZUKI , Tsutomu CHINO , Koji KAMATA , Shota MURONAKA
IPC分类号： C01B32/348 , C22C1/10 , C22C32/00
摘要： A novel method for producing a porous carbon material which makes it possible to easily produce a porous carbon material having a desired shape; and a spherical porous carbon material are provided. The method includes immersing a carbon-containing material having a desired shape and composed of a compound, alloy or non-equilibrium alloy containing carbon in a metal bath, the metal bath having a solidification point that is lower than a melting point of the carbon-containing material, the metal bath being controlled to a lower temperature than a minimum value of a liquidus temperature within a compositional fluctuation range extending from the carbon-containing material to carbon by decreasing the other non-carbon main components, to thereby selectively elute the other non-carbon main components into the metal bath while maintaining an external shape of the carbon-containing material to give a porous carbon material having microvoids.
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公开(公告)号：US20190062872A1
公开(公告)日：2019-02-28
申请号：US16078173
申请日：2016-12-07
发明人： Hidemi KATO , Masashi TSUDA , Yugo TAKANO , Yosuke SUZUKI , Tsutomu CHINO , Koji KAMATA , Shota MURONAKA
摘要： A method for producing a carbon composite material to reduce costs; and a carbon composite material includes a dealloying step of immersing a carbon-containing material composed of a compound, alloy or non-equilibrium alloy containing carbon in a metal bath, the metal bath having a solidification point lower than a melting point of the carbon-containing material, the metal bath being controlled to a lower temperature than a minimum value of a liquidus temperature within a compositional fluctuation range extending from the carbon-containing material to carbon by decreasing other non-carbon main components, to thereby selectively elute the other non-carbon main components into the metal bath to form a carbon member having microvoids; and a cooling step performed with the microvoids of the carbon member including a component of the metal bath to solidify the component. The carbon composite material combining carbon with the metal bath component that has solidified is thereby obtained.
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公开(公告)号：US20170225955A1
公开(公告)日：2017-08-10
申请号：US15501553
申请日：2015-09-04
发明人： Hidemi KATO , Seung-Geun YU , Takeshi WADA
CPC分类号： H01M4/663 , C01B32/20 , C01B32/30 , C01B32/336 , C01B32/348 , C01P2002/74 , C01P2004/02 , C01P2004/04 , C01P2006/12 , C01P2006/14 , C01P2006/16 , C01P2006/40 , H01M4/587 , H01M4/8807
摘要： A method for producing porous graphite capable of realizing higher durability, output and capacity, and porous graphite. A carbon member having microvoids is obtained by a dealloying step for selectively eluting other non-carbon main components into a metal bath by immersing a carbon-containing material, composed of a compound including carbon or an alloy or non-equilibrium alloy, in the metal bath, wherein the metal bath has a solidifying point lower than the melting point of the carbon-containing material, and is controlled to a temperature lower than the minimum value of a liquidus temperature within a composition fluctuation range extending from the carbon-containing material to carbon by reducing the other non-carbon main components. The carbon member obtained in the dealloying step is graphitized by heating in a graphitization step. The carbon member graphitized in the graphitization step is subjected to activation treatment by an activation step.
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