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公开(公告)号：US3976519A
公开(公告)日：1976-08-24
申请号：US491498
申请日：1974-07-23
申请人： Takao Kubo , Tadao Ohtani , Shigeru Kojima , Nobuyuki Kato , Kiyoshi Kojima , Yoichi Sakamoto , Isago Konno , Masaharu Tsukahara
发明人： Takao Kubo , Tadao Ohtani , Shigeru Kojima , Nobuyuki Kato , Kiyoshi Kojima , Yoichi Sakamoto , Isago Konno , Masaharu Tsukahara
摘要： An anisotropic permanent magnet of an Mn-Al-C alloy containing 68.0% to 73.0% by weight of manganese, (1/10 Mn-6.6)% to (1/3 Mn-22.2)% by weight of carbon, and the remainder aluminum, which alloy is rendered anisotropic by deforming it plastically at a temperature of 530.degree.C to 830.degree.C.The permanent magnet has excellent mechanical characteristics and magnetic properties such that the (BH)max is above 4.8 .times. 10.sup.6 G.Oe up to about 9.2 .times. 10.sup.6 G.Oe in its bulk state.
摘要翻译： Mn-Al-C合金的各向异性永磁体含有68.0％〜73.0％的锰，（1 / 10Mn-6.6）％〜（1/3Mn-22.2）％的碳，余量 铝，该合金在530℃至830℃的温度下塑化变形而呈现各向异性。
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公开(公告)号：US4023991A
公开(公告)日：1977-05-17
申请号：US692020
申请日：1976-06-01
申请人： Takao Kubo , Tadao Ohtani , Shigeru Kojima , Nobuyuki Kato , Kiyoshi Kojima , Yoichi Sakamoto , Isago Konno , Masaharu Tsukahara
发明人： Takao Kubo , Tadao Ohtani , Shigeru Kojima , Nobuyuki Kato , Kiyoshi Kojima , Yoichi Sakamoto , Isago Konno , Masaharu Tsukahara
摘要： An anisotropic permanent magnet of an Mn-Al-C alloy containing 68.0% to 73.0% by weight of manganese, (1/10Mn-6.6)% to (1/3Mn-22.2)% by weight of carbon, and the remainder aluminum, which alloy is rendered anisotropic by deforming it plastically at a temperature of 530.degree. to 830.degree. C.The permanent magnet has excellent mechanical characteristics and magnetic properties such that the (BH) max is above 4.8 .times. 10.sup.6 G.Oe up to about 9.2 .times. 10.sup.6 G.Oe in its bulk state.
摘要翻译： 包含68.0％至73.0％的锰，（1 / 10Mn-6.6）％至（1 / 3Mn-22.2）重量％的碳的Mn-Al-C合金的各向异性永磁体，其余为铝， 该合金通过在530℃至830℃的温度下塑化变形而呈现各向异性。
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公开(公告)号：US4042429A
公开(公告)日：1977-08-16
申请号：US511476
申请日：1974-10-01
申请人： Shigeru Kojima , Kiyoshi Kojima , Tadao Ohtani , Nobuyuki Kato , Yoichi Sakamoto , Isago Konno , Masaharu Tsukahara , Takao Kubo
发明人： Shigeru Kojima , Kiyoshi Kojima , Tadao Ohtani , Nobuyuki Kato , Yoichi Sakamoto , Isago Konno , Masaharu Tsukahara , Takao Kubo
摘要： Magnetic alloys consisting of 68.0.about.73.0 weight % manganese, (1/10 Mn - 6.6).about.(1/3 Mn - 22.2) weight % carbon, the balance aluminum, which show wasp-waisted magnetic hysteresis loops with the ratio of the residual magnetization 4.pi.I.sub.r to the intensity of magnetization 4.pi.I.sub.10000 in a magnetic field of 10000 Oe, I.sub.r /I.sub.10000, falling 0.0.about.0.2.
摘要翻译： 磁性合金由68.0％的重量比为73.0重量％的锰，（1/10 Mn-6.6）的差异（1/3 Mn-22.2）重量％的碳组成，余量为铝，其显示了具有余量比的黄蜂磁滞回线 磁化强度4 pi Ir到磁化强度4 pi I10000在10000 Oe，Ir / I10000的磁场中，下降0.0分差0.2。
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公开(公告)号：US4055732A
公开(公告)日：1977-10-25
申请号：US636960
申请日：1975-12-02
申请人： Hisashi Yoshimura , Sadao Yukimoto , Takashi Matsumoto , Isago Konno , Nobuyuki Kato , Tadao Ohtani , Takao Kubo
发明人： Hisashi Yoshimura , Sadao Yukimoto , Takashi Matsumoto , Isago Konno , Nobuyuki Kato , Tadao Ohtani , Takao Kubo
CPC分类号： H04R9/025 , H01F1/04 , H01F7/0289 , H04R2209/022 , Y10T29/49005
摘要： An inboard type magnetic system for an electrodynamic transducer which has a reduced height and magnetic flux leakage by making use of a manganese-aluminum-carbon system alloy magnet anisotropized by warm extrusion.
摘要翻译： 一种用于电动换能器的内置型磁系统，其通过使用通过热挤压各向异性的锰 - 铝 - 碳系合金磁体而具有降低的高度和磁通量泄漏。
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公开(公告)号：US4404046A
公开(公告)日：1983-09-13
申请号：US231625
申请日：1981-02-05
申请人： Yoichi Sakamoto , Akihiko Ibata , Shigeru Kojima , Tadao Ohtani
发明人： Yoichi Sakamoto , Akihiko Ibata , Shigeru Kojima , Tadao Ohtani
摘要： There is provided a method of producing a manganese-aluminum-carbon alloy magnet, including the steps of preparing a polycrystalline Mn-Al-C alloy magnet having a specified direction of easy magnetization and subjecting the magnet to compressive working in that direction at a temperature of 550.degree. to 780.degree. C., the degree of said compressive working being equivalent to a logarithmic strain of .ltoreq.-0.1 and working in said step at least up to a logarithmic strain of -0.1 being free compression.
摘要翻译： 提供一种生产锰 - 铝 - 碳合金磁体的方法，包括以下步骤：制备具有指定易磁化方向的多晶Mn-Al-C合金磁体，并使磁体在该温度下以该方向进行压缩加工 在550℃至780℃之间，所述压缩加工的程度等于对数应变为
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公开(公告)号：US4051706A
公开(公告)日：1977-10-04
申请号：US592314
申请日：1975-07-01
申请人： Yoichi Sakamoto , Nobuyuki Kato , Tadao Ohtani
发明人： Yoichi Sakamoto , Nobuyuki Kato , Tadao Ohtani
CPC分类号： H01F1/04 , C22C28/00 , C22F1/16 , Y10S72/70 , Y10T29/49076
摘要： Anisotropic permanent magnets of Mn-Al-C polycrystalline alloy are produced by warm extrusion at a temperature of 530.degree. to 830.degree. C utilizing converging or tapered dies with lubricant interposed between the polycrystalline body and the converging die. With dies of rather small semiangles, alloys with improved magnetic properties with regard to (BH)max, and especially Br are obtained.
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7.发明授权Magnetron employing a permanent magnet formed of a manganese-aluminum-carbon system alloy 失效磁控管采用由锰 - 铝 - 碳系合金形成的永磁体
公开(公告)号：US3989979A
公开(公告)日：1976-11-02
申请号：US600130
申请日：1975-07-29
申请人： Isago Konno , Tadao Ohtani
发明人： Isago Konno , Tadao Ohtani
摘要： A magnetron comprising means for applying a magnetic field in a direction perpendicular to an electric field established between an anode and a cathode, the magnetic field applying means including a permanent magnet formed of a manganese-aluminum-carbon system alloy and disposed within an enclosure member in which an interaction space for electrons is formed, or used as part of the enclosure member.
摘要翻译： 一种磁控管，包括用于在与阳极和阴极之间建立的电场垂直的方向上施加磁场的装置，所述磁场施加装置包括由锰 - 铝 - 碳系统合金形成的永磁体并且设置在封闭构件 其中形成电子的相互作用空间，或者用作外壳构件的一部分。
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