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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：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：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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公开(公告)号：US11453931B2
公开(公告)日：2022-09-27
申请号：US17607397
申请日：2020-09-24
发明人： Michimasa Okubo , Kenji Goto , Kunihiro Tanaka , Kojiro Shiraishi , Kunihiro Shima , Yuya Kato , Kenichi Hamada , Eiichi Honda , Emi Takegawa
摘要： The present invention relates to a medical Au—Pt—Pd alloy including Au, Pt, Pd, and inevitable impurities. The alloy has an alloy composition inside a polygon (A1-A2-A3-A4-A5-A6) surrounded by straight lines connected at point A1 (Au: 37.9 atom %, Pt: 0.1 atom %, and Pd: 62 atom %), point A2 (Au: 79.9 atom %, Pt: 0.1 atom %, and Pd: 20 atom %), point A3 (Au: 79.9 atom %, Pt: 20 atom %, and Pd: 0.1 atom %), point A4 (Au: 69.9 atom %, Pt: 30 atom %, and Pd: 0.1 atom %), point A5 (Au: 49 atom %, Pt: 30 atom %, and Pd: 21 atom %), and point A6 (Au: 39 atom %, Pt: 40 atom %, and Pd: 21 atom %) in a Au—Pt—Pd ternary state diagram. The metal structure of the alloy is optimized, and the metal structure is close to a single-phase structure, and has little precipitation of a Au-rich phase and a Pt-rich phase different in composition from a mother phase.
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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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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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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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