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公开(公告)号：US09784709B2
公开(公告)日：2017-10-10
申请号：US14430235
申请日：2013-09-17
发明人： Nobuhisa Okamoto , Takuya Hosoi , Koichi Sakairi
IPC分类号： G01N27/407 , H01B1/22 , C09D5/24 , G01N27/30 , H01B13/00
CPC分类号： G01N27/4075 , C09D5/24 , G01N27/304 , H01B1/22 , H01B13/0016
摘要： The present invention relates to a gas sensor electrode including a conductive particle phase made of Pt or Pt alloy and a ceramic particle phase being mixed and dispersed, wherein a rate of content of the ceramic particle phase is 6.0 to 22.0 mass %, and a void ratio is 2.5 to 10.0%, and a dispersion degree of the conductive particle phase per length of 25 μm on the electrode surface is 0.60 to 0.85 μm, and a dispersion degree of the conductive particle phase in the electrode cross section per length of 100 μm in a direction parallel to the electrode surface is 2.0 to 4.0 μm. This electrode can be produced by firing a metal paste made by dispersing, in a solvent, a conductive particle having a core/shell structure in which a core particle such as Pt is covered with a ceramic shell and ceramic powder. The gas sensor electrode according to the present invention has a high electrode activity.
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公开(公告)号：US11053570B2
公开(公告)日：2021-07-06
申请号：US16469083
申请日：2017-12-04
发明人： Kiyohito Ishida , Toshihiro Omori , Yutaka Sato , Koichi Sakairi , Kunihiro Tanaka , Tatsuya Nakazawa
IPC分类号： C22C19/05
摘要： The present invention relates to a Ni-based heat-resistant alloy including Ir: 5.0 mass % or more and 50.0 mass % or less, Al: 1.0 mass % or more and 8.0 mass % or less, W: 5.0 mass % or more and 25.0 mass % or less, and balance Ni, having an L12-structured γ′ phase present in the matrix, and including at least one of Ru: 0.8 mass % or more and 5.0 mass % or less and Re: 0.8 mass % or more and 5.0 mass % or less. This Ni-based heat-resistant alloy has improved toughness over a conventional Ni-based heat-resistant alloy based on a Ni—Ir—Al—W-based alloy, and is also excellent in ambient-temperature strength.
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公开(公告)号：US10094012B2
公开(公告)日：2018-10-09
申请号：US15127348
申请日：2015-03-23
发明人： Kiyohito Ishida , Toshihiro Omori , Yutaka Sato , Kunihiro Tanaka , Muneki Nakamura , Koichi Sakairi , Tatsuya Nakazawa
摘要： The present invention relates to a NiIr-base heat-resistant alloy which includes a Ni—Ir—Al—W-base alloy which contains Ir: 5.0 to 50.0 mass %, Al: 1.0 to 8.0 mass %, W: 5.0 to 20.0 mass %, and the balance is Ni, and a γ′ phase having an L12 structure precipitating and dispersing in a matrix as an essential strengthening phase, and a ratio (Y/X) of a peak intensity (Y) of (201) plane of the Ir3W phase observed in the range of 2θ=48° to 50° to a peak intensity (X) of (111) plane of the γ′ phase observed in the range of 2θ=43° to 45° in X-ray diffraction analysis is 0.5 or less. The alloy exhibits good high-temperature property stably.
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4.发明申请CONDUCTIVE FINE PARTICLE AND METAL PASTE FOR ELECTRODE FORMATION AND ELECTRODE 审中-公开用于电极形成和电极的导电精细颗粒和金属填料公开(公告)号：US20150123045A1
公开(公告)日：2015-05-07
申请号：US14252762
申请日：2014-04-14
发明人： Takuya Hosoi , Nobuhisa Okamoto , Koichi Sakairi
CPC分类号： C09D5/24 , G01N27/4075 , H01B1/02 , H01B1/22 , Y10T428/2991
摘要： An object of the present invention is to provide a conductive fine particle for producing a metal paste that can produce an electrode film having a low resistance, and a metal paste utilizing the conductive fine particle. The present invention is a conductive particle for electrode formation having a core/shell structure, and the conductive particle comprises a core particle made of Pt or a Pt alloy and having a particle diameter of 10 to 200 nm, and a shell made of a ceramic containing Al2O3 or ZrO2 and covers at least a part of the core particle, wherein the ceramic constituting the shell is added in an amount of 0.5 to 15% by weight based on the core particle to cover the core. The core particle is preferably Pt or a Pt alloy alloyed with Pd, Au, Ag, or Rh.
摘要翻译： 本发明的目的在于提供一种用于制造能够制造具有低电阻的电极膜的金属膏的导电性微粒和利用该导电性微粒的金属糊。 本发明是具有核/壳结构的电极形成用导电性粒子，导电性粒子由Pt或Pt合金制成的粒径为10〜200nm的核心粒子和由陶瓷制成的壳体 含有Al 2 O 3或ZrO 2并且覆盖核心颗粒的至少一部分，其中构成壳的陶瓷的添加量为0.5〜15重量％，基于芯颗粒覆盖芯。 核心颗粒优选为与Pd，Au，Ag或Rh合金化的Pt或Pt合金。
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公开(公告)号：US10081855B2
公开(公告)日：2018-09-25
申请号：US14774223
申请日：2014-03-11
发明人： Kiyohito Ishida , Toshihiro Omori , Yutaka Sato , Kunihiro Tanaka , Muneki Nakamura , Koichi Sakairi
摘要： The present invention is a heat-resistant Ni-base alloy including a Ni—Ir—Al—W alloy having essential additive elements of Ir, Al, and W added to Ni, wherein the heat-resistant Ni-base alloy includes Ir: 5.0 to 50.0 mass %, Al: 1.0 to 8.0 mass %, and W: 5.0 to 20.0 mass %, the balance being Ni, and a γ′ phase having an L12 structure disperses in a matrix as an essential strengthening phase. The heat-resistant material including the Ni-base alloy may contain one or more additive elements selected from B: 0.001 to 0.1 mass %, Co: 5.0 to 20.0 mass %, Cr: 1.0 to 25.0 mass %, Ta: 1.0 to 10.0 mass %, Nb: 1.0 to 5.0 mass %, Ti: 1.0 to 5.0 mass %, V: 1.0 to 5.0 mass %, and Mo: 1.0 to 5.0 mass %, or 0.001 to 0.5 mass % of C.
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6.发明申请公开(公告)号：US20170107594A1
公开(公告)日：2017-04-20
申请号：US15127252
申请日：2015-03-12
发明人： Nobuhisa Okamoto , Takuya Hosoi , Koichi Sakairi
CPC分类号： C22B11/04 , B22F1/0014 , B22F1/0059 , B22F1/0074 , B22F9/00 , B22F2009/001 , B22F2301/25 , B22F2302/253 , B22F2302/406 , B22F2302/45 , B22F2304/10 , C22B7/001 , C22B7/006 , C22B11/021 , Y02P10/214 , Y02P10/24
摘要： The present invention relates to a technique for recovering and recycling a platinum paste. The present invention provides a method for recovering a metal powder from a platinum paste formed by mixing a solid component composed of a metal powder including at least a platinum powder or a platinum alloy powder and an organic component including at least an organic solvent, the method including removing the organic component by heating the platinum paste at a recovery temperature set in a temperature range of 300° C. or higher and 500° C. or lower. The recovered metal powder can be recycled into a platinum paste equivalent to a new product by mixing the metal powder with a solvent etc.
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7.发明授权Conductive fine particle and metal paste for electrode formation and electrode 有权用于电极形成和电极的导电细粒和金属糊公开(公告)号：US09556343B2
公开(公告)日：2017-01-31
申请号：US14252762
申请日：2014-04-14
发明人： Takuya Hosoi , Nobuhisa Okamoto , Koichi Sakairi
IPC分类号： H01B1/22 , C09D5/24 , H01B1/02 , G01N27/407
CPC分类号： C09D5/24 , G01N27/4075 , H01B1/02 , H01B1/22 , Y10T428/2991
摘要： An object of the present invention is to provide a conductive fine particle for producing a metal paste that can produce an electrode film having a low resistance, and a metal paste utilizing the conductive fine particle. The present invention is a conductive particle for electrode formation having a core/shell structure, and the conductive particle comprises a core particle made of Pt or a Pt alloy and having a particle diameter of 10 to 200 nm, and a shell made of a ceramic containing Al2O3 or ZrO2 and covers at least a part of the core particle, wherein the ceramic constituting the shell is added in an amount of 0.5 to 15% by weight based on the core particle to cover the core. The core particle is preferably Pt or a Pt alloy alloyed with Pd, Au, Ag, or Rh.
摘要翻译： 本发明的目的在于提供一种用于制造能够制造具有低电阻的电极膜的金属膏的导电性微粒和利用该导电性微粒的金属糊。 本发明是具有核/壳结构的电极形成用导电性粒子，导电性粒子由Pt或Pt合金制成的粒径为10〜200nm的核心粒子和由陶瓷制成的壳体 含有Al 2 O 3或ZrO 2并且覆盖核心颗粒的至少一部分，其中构成壳的陶瓷的添加量为0.5〜15重量％，基于芯颗粒覆盖芯。 核心颗粒优选为与Pd，Au，Ag或Rh合金化的Pt或Pt合金。
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公开(公告)号：US11066728B2
公开(公告)日：2021-07-20
申请号：US16471141
申请日：2017-12-05
发明人： Kiyohito Ishida , Toshihiro Omori , Yutaka Sato , Koichi Sakairi , Kunihiro Tanaka , Tatsuya Nakazawa
摘要： The present invention relates to a Ni-based heat-resistant alloy including Ir: 5.0 mass % or more and 50.0 mass % or less, Al: 1.0 mass % or more and 8.0 mass % or less, W: 5.0 mass % or more and 25.0 mass % or less, and balance Ni, having an L12-structured γ′ phase present in the matrix, and including at least one of Zr: 0.01 mass % or more and 3.0 mass % or less and Hf: 0.01 mass % or more and 3.0 mass % or less. This Ni-based heat-resistant alloy has improved toughness over a conventional Ni-based heat-resistant alloy based on a Ni—Ir—Al—W-based alloy, and is also excellent in ambient-temperature strength.
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公开(公告)号：US09806500B2
公开(公告)日：2017-10-31
申请号：US15504500
申请日：2015-09-11
发明人： Koichi Sakairi , Hiroshi Matsuo , Kunihiro Tanaka
CPC分类号： H01T13/39 , B23K11/002 , H01T21/02
摘要： The present invention relates to a tape material for manufacturing an ignition plug electrode, the tape material being a member for forming an electrode chip, in which a base metal layer and a precious metal layer are cladded, on a bonded region set on an electrode base material of an ignition plug, the member is in the form of a long tape in which the base metal layer being in contact with the bonded region is cladded with the precious metal layer being in contact with the base metal layer, the base metal layer has a width substantially equal to one of the longitudinal width, lateral width and diameter of the bonded region. According to the present invention, bonding between a precious metal chip and a substrate can be reliably maintained to prolong the life of an ignition plug. Accordingly, precious metals can be efficiently used to save resources.
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公开(公告)号：US10137496B2
公开(公告)日：2018-11-27
申请号：US15125491
申请日：2015-03-23
发明人： Akira Yoshikawa , Yuui Yokota , Muneki Nakamura , Kunihiro Tanaka , Tatsuya Nakazawa , Koichi Sakairi
IPC分类号： C22C5/04 , C30B15/08 , C30B29/02 , C30B29/52 , B22D11/00 , C22C1/02 , C22F1/18 , B22D11/11 , B22D21/00
摘要： The present invention provides a metal wire rod composed of iridium or an iridium alloy, wherein the number of crystal grains on any cross-section in a longitudinal direction is 2 to 20 per 0.25 mm2, and the Vickers hardness at any part is 200 Hv or more and less than 400 Hv. The iridium wire rod is a material which is produced by a μ-PD method, and has low residual stress and which has a small change in the number of crystal grains and hardness even when heated to a temperature equal to or higher than a recrystallization temperature (1200° C. to 1500° C.). The metal wire rod of the present invention is excellent in oxidative consumption resistance under a high-temperature atmosphere, and mechanical properties.
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