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    Magnetic field generator useful for a magnetic resonance imaging instrument
    1.
    发明授权
    Magnetic field generator useful for a magnetic resonance imaging instrument 失效
    用于磁共振成像仪器的磁场发生器

    公开(公告)号：US4827235A

    公开(公告)日：1989-05-02

    申请号：US73184

    申请日：1987-07-14

    申请人： Koichiro Inomata ,  Tetsuhiko Mizoguchi ,  Naoyuki Sori ,  Hideki Yamamiya ,  Isao Sakai

    发明人： Koichiro Inomata ,  Tetsuhiko Mizoguchi ,  Naoyuki Sori ,  Hideki Yamamiya ,  Isao Sakai

    IPC分类号： G01R33/383 ,  H01F7/02 ,  H01F1/24 ,  C04B35/32

    CPC分类号： G01R33/383 ,  H01F7/0278

    摘要： A magnetic field generator comprises a permanent magnet, and pole pieces magnetically connected to the permanent magnet. The pole pieces are disposed to face each other to generate a magnetic field between them, and have a specific resistance of 20 .mu..OMEGA.-cm or more. The permanent magnet comprises a sintered alloy including iron as a main component, a rare earth element including yttrium, cobalt, and boron. The permanent magnet includes, as its main part, a strong magnetic Fe-rich phase of a tetragonal system, as well as a non-magnetic Laves phase, and preferably has a maximum energy product of 38 MGOe or more.

    摘要翻译： 磁场发生器包括永磁体和与永磁体磁连接的极片。 磁极片彼此面对配置，在它们之间产生磁场，电阻值为20μΩEGEG-cm以上。 永磁体包括以铁为主要成分的烧结合金，包括钇，钴和硼的稀土元素。 永久磁铁作为其主要部分包括四方晶系的强磁铁富相以及非磁性Laves相，优选具有38MGOe以上的最大能量乘积。

    Permanent magnet
    2.
    发明授权
    Permanent magnet 失效
    永久磁铁

    公开(公告)号：US4578125A

    公开(公告)日：1986-03-25

    申请号：US392593

    申请日：1982-06-28

    申请人： Masashi Sahashi ,  Koichiro Inomata ,  Naoyuki Sori ,  Hideki Yamamiya

    发明人： Masashi Sahashi ,  Koichiro Inomata ,  Naoyuki Sori ,  Hideki Yamamiya

    IPC分类号： C22C19/07 ,  H01F1/055 ,  C04B35/00

    CPC分类号： C22C19/07 ,  H01F1/0557

    摘要： Disclosed is a comprising a powdered alloy composed of 23 to about 29% by weight of samarium, 0.2 to about 7% by weight of titanium, 3 to about 9% by weight of copper, 10 to about 25% by weight of iron, and the balance of cobalt principally; said powdered alloy being sintered to obtain a sintered body, followed by(a) annealing the sintered body at a cooling rate of not more than 5.degree. C./min from an annealing-initiating temperature of from 600.degree. to 900.degree. C., or(b) subjecting the sintered body to a multi-stepwise aging processing initiated from a higher temperature to a lower temperature within the temperature range of from 350.degree. to 900.degree. C.The magnet is excellent in all the magnetic properties such as residual magnetic flux density, coercive force and maximum energy product, and also excellent in antioxidation property.

    摘要翻译： 公开了一种粉末状合金，其包含23至29重量％的钐，0.2至约7重量％的钛，3至约9重量％的铜，10至约25重量％的铁以及 钴的余量主要为 所述粉末状合金被烧结以获得烧结体，然后（a）从600℃至900℃的退火起始温度以不超过5℃/分钟的冷却速率对烧结体进行退火， 或（b）使烧结体在350〜900℃的温度范围内从较高的温度开始进行多步骤老化处理。该磁体具有优异的磁性能，例如残余磁性 磁通密度，矫顽力和最大能量乘积，抗氧化性也优异。

    Cold accumulating material and method of manufacturing the same
    3.
    发明授权
    Cold accumulating material and method of manufacturing the same 失效
    蓄冷材料及其制造方法

    公开(公告)号：US5449416A

    公开(公告)日：1995-09-12

    申请号：US383655

    申请日：1995-02-03

    申请人： Tomohisa Arai ,  Naoyuki Sori ,  Masashi Sahashi ,  Yoichi Tokai

    发明人： Tomohisa Arai ,  Naoyuki Sori ,  Masashi Sahashi ,  Yoichi Tokai

    IPC分类号： C09K5/00 ,  B22F1/00 ,  B22F9/08 ,  B22F9/10 ,  C09K5/08 ,  C09K5/14 ,  C22C1/04 ,  C22C28/00 ,  F25B9/00 ,  F25B9/14 ,  H01F1/01 ,  H01F1/053

    CPC分类号： B22F9/082 ,  B22F1/0014 ,  B22F9/10 ,  C09K5/14 ,  C22C1/04 ,  C22C1/0441 ,  C22C28/00 ,  F25B9/14 ,  H01F1/015 ,  B22F2009/088 ,  F25B2309/003

    摘要： The extremely low temperature cold accumulating material for use in refrigerators, for example, comprises particles containing at least one kind of rare earth element selected from a group consisting of Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb. The proportion of particles each having a particle size of 0.01 to 3 mm is 70% or greater by weight with respect to the whole particles and the proportion of particles each having a shape such that the ratio of the major diameter to the minor diameter is not greater than 5 is 70% or greater by weight with respect to the whole particles. The particles are manufactured by quenching and solidifying a molten metal containing at least one kind of rear earth element described above. The thus manufacured extremely low temperature cold accumulating material is improved in cold accumulating efficiency and is specifically improved in mechanical strength and in chemical stability.

    摘要翻译： 例如，用于冰箱的极低温蓄冷材料包括含有选自由Y，La，Ce，Pr，Nd，Pm，Sm，Eu，Gd等组成的组中的至少一种稀土元素的粒子， Tb，Dy，Ho，Er，Tm和Yb。 粒径为0.01〜3mm的粒子的比例相对于整个粒子为70重量％以上，并且具有使得长径与小径的比例不成比例的粒子的比例 相对于整个颗粒，大于5是70重量％以上。 颗粒通过淬火和固化含有上述至少一种后置土元素的熔融金属来制造。 这样制造的极低温蓄冷材料在蓄冷效率上得到提高，并且具体地提高了机械强度和化学稳定性。

    Regenerator material for extremely low temperatures and regenerator for extremely low temperatures using the same
    5.
    发明授权
    Regenerator material for extremely low temperatures and regenerator for extremely low temperatures using the same 失效
    用于极低温度的再生器材料和使用其的极低温度的再生器

    公开(公告)号：US6042657A

    公开(公告)日：2000-03-28

    申请号：US793261

    申请日：1997-02-21

    申请人： Masami Okamura ,  Naoyuki Sori

    发明人： Masami Okamura ,  Naoyuki Sori

    IPC分类号： F25B9/14 ,  H01F1/055

    CPC分类号： F25B9/14 ,  F25B2309/003

    摘要： A cold heat accumulating material for extremely low temperatures which comprises cold heat accumulating granular bodies in which a rate of particles, which are destroyed when a compressive force of 5 MPa is applied thereto by a mechanical strength evaluation die, out of the magnetic cold heat accumulating particles constituting the magnetic cold heat accumulating granular bodies is not than 1 wt. %. In this magnetic cold heat accumulating granular bodies, a rate of magnetic cold heat accumulating particles having more than 1.5 form factor R expressed by L2/4.pi.A, wherein L represents a circumferential length of a projected image of each magnetic cold heat accumulating particle, and A a real of the projected image, is not more than 5%. Such a cold heat accumulating material for extremely low temperatures is capable of providing excellent mechanical properties with respect to mechanical vibration with a high reproducibility. A cold heat accumulator for extremely low temperatures is formed by filling a cold heat accumulating container with a cold heat accumulating material for extremely low temperatures comprising the above-mentioned magnetic cold heat accumulating granular bodies. Such a cold heat accumulator for extremely low temperatures can display excellent performance for a long period of time.

    摘要翻译： PCT No.PCT / JP95 / 01653 Sec。 371日期1997年2月21日 102（e）日期1997年2月21日PCT提交1995年8月22日PCT公布。 出版物WO96 / 06315 日本特开1996年2月29日是用于极低温度的冷热蓄热材料，其特征在于，具有冷堆积粒状体，其中，当通过机械强度评价模具施加压力为5MPa时被破坏的颗粒的速度从 构成磁性冷蓄热颗粒体的磁性冷累积粒子不大于1重量％。 ％。 在这种磁性冷积热颗粒体中，具有由L + E，fra 2/4 + EE pi A表示的具有大于1.5形状因子R的磁性冷累积颗粒的速率，其中L表示投影图像的周长 每个磁性冷积聚粒子，A是投影图像的实数，不大于5％。 这种用于极低温度的冷累积材料能够以高再现性提供相对于机械振动的优异的机械性能。 通过用包含上述磁性冷蓄热颗粒体的极低温度的冷蓄热材料填充冷蓄热容器来形成极低温度的冷热蓄热器。 这种用于极低温度的冷热蓄热器可以长时间显示出优异的性能。

    Cryogenic refrigerant and refrigerator using the same
    7.
    发明授权
    Cryogenic refrigerant and refrigerator using the same 有权
    低温制冷剂和冰箱使用相同

    公开(公告)号：US06197127B1

    公开(公告)日：2001-03-06

    申请号：US09125587

    申请日：1998-08-21

    申请人： Masami Okamura ,  Naoyuki Sori

    发明人： Masami Okamura ,  Naoyuki Sori

    IPC分类号： H01F1055

    CPC分类号： F25B9/14 ,  F25B2309/003 ,  H01F1/015

    摘要： A heat regenerating material for very low temperature use consisting of a magnetic heat regenerating material particle aggregate, wherein, among magnetic heat regenerating material particles constituting the magnetic heat regenerating material particle aggregate, a ratio of the particles being destroyed when a simple harmonic oscillation of the maximum acceleration of 300 m/s2 is added 1×106 times on the magnetic heat regenerating material particle aggregate is 1% by weight or less. Such a heat regenerating material for very low temperature use has an excellent mechanical characteristics against mechanical vibration and acceleration. A refrigerator comprises a heat regenerator constituted by packing the above described heat regenerating material for very low temperature use into a heat regenerator container. Such a refrigerator can exhibit an excellent refrigeration performance over a long term.

    摘要翻译： 一种用于非常低温度的热再生材料，其由磁性热再生材料颗粒聚集体组成，其中，在构成磁性热再生材料颗粒聚集体的磁性热再生材料颗粒中，当简单的谐波振荡 在磁热再生材料颗粒聚集体上加入最大加速度为300m / s2 1×106次，为1重量％以下。 这种用于非常低温使用的热再生材料具有优异的机械振动和加速性能。 冰箱包括通过将上述用于极低温用途的热再生材料包装到热交换器容器中而构成的蓄热器。 这样的冰箱能够长期呈现优异的制冷性能。

    Permanent-magnetic material
    9.
    发明授权
    Permanent-magnetic material 失效
    永磁材料

    公开(公告)号：US4734131A

    公开(公告)日：1988-03-29

    申请号：US75996

    申请日：1987-07-21

    申请人： Tomohisa Arai ,  Naoyuki Sori ,  Seiki Sato ,  Nobuo Uchida

    发明人： Tomohisa Arai ,  Naoyuki Sori ,  Seiki Sato ,  Nobuo Uchida

    IPC分类号： H01F1/053 ,  C22C1/04 ,  C22C19/07 ,  C22C38/00 ,  C22C38/14 ,  F04B49/10 ,  H01F1/00 ,  H01F1/057 ,  H01F7/00 ,  C22C29/14

    CPC分类号： H01F1/0577 ,  C22C1/0441 ,  H01F1/057

    摘要： A permanent-magnet material having a composition represented by the following formula;R(Co.sub.1-X-Y-.alpha.-.beta. Fe.sub.X Cu.sub.Y M.sub..alpha. M'.sub.62)A(wherein X, Y, .alpha., .beta., and A respectively represent the following numbers:0.01.ltoreq.X, 0.02.ltoreq.Y.ltoreq.0.25, 0.001.ltoreq..alpha..ltoreq.0.15,0.0001.ltoreq..beta..ltoreq.0.001, and 6.0.ltoreq.A.ltoreq.8.3,providing that the amount of Fe to be added should be less than 15% by weight, based on the total amount of the composition, and R, M, and M' respectively represent the following constituents:R: At least one element selected from the group of rare earth elements,M: At least one element selected from the group consisting of Ti, Zr, Hf, Nb, V, and Ta, andM': B or B+Si),is disclosed. The permanent-magnetic material of the present invention is consisting of an intermetallic compound, permitting coexistence of liquid and solid phases in a wide region, and enabling sintering conditions warranting impartation of highly desirable magnetic characteristics to be selected in wide ranges.

    摘要翻译： 具有由下式表示的组成的永久磁铁材料; R（Co1-XY-α-βFeXCuYMαM'62）A（其中X，Y，α，β和A分别表示以下数字：0.01