公开(公告)号：US4425401A

公开(公告)日：1984-01-10

申请号：US393789

申请日：1982-06-30

申请人： Tadashi Ido ,  Hirotaka Yokoyama ,  Moriyasu Wada ,  Toshihiko Oguchi ,  Akio Ishizawa ,  Yoshiyasu Koike

发明人： Tadashi Ido ,  Hirotaka Yokoyama ,  Moriyasu Wada ,  Toshihiko Oguchi ,  Akio Ishizawa ,  Yoshiyasu Koike

IPC分类号： C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/04 ,  G11B5/70 ,  G11B5/706 ,  G11B5/714 ,  G11B5/845 ,  H01F10/02

CPC分类号： G11B5/70 ,  G11B5/70678 ,  G11B5/714 ,  G11B5/845 ,  Y10S428/90 ,  Y10T428/257 ,  Y10T428/258

摘要： Disclosed is a magnetic recording medium comprising substrate and a resinous composition containing magnetic particles of uniaxially-anisotropic hexagonal crystals having particle diameters of 0.01.about.0.3 .mu.m and coated on said substrate; the ratio of remanent magnetization to saturation magnetization on the magnetization curve corrected to demagnetizing field which is measured in a direction vertical to the surface of the recording medium, ranging from 0.3 to 0.7. This magnetic recording medium requires no orientation treatment for its production.

摘要翻译： 公开了一种磁性记录介质，其包含基材和含有粒径为0.01μm×0.3μm并涂覆在所述基材上的单轴 - 各向异性六方晶体的磁性颗粒的树脂组合物; 对磁化曲线校正为在与记录介质表面垂直的方向上测量的退磁场的磁化强度与饱和磁化强度之比为0.3至0.7。 该磁记录介质不需要用于其生产的取向处理。

公开(公告)号：US4407721A

公开(公告)日：1983-10-04

申请号：US304683

申请日：1981-09-22

申请人： Yoshiyasu Koike ,  Osamu Kubo ,  Tadashi Ido ,  Masanobu Uwaha

发明人： Yoshiyasu Koike ,  Osamu Kubo ,  Tadashi Ido ,  Masanobu Uwaha

IPC分类号： C01G49/00 ,  G11B5/706 ,  H01F1/11 ,  C04B35/26

CPC分类号： G11B5/70678

摘要： A process for manufacturing a hexagonal ferrite magnetic powder for a magnetic recording medium involves rapidly cooling a molten material of a glass-forming component and a hexagonal ferrite-forming component to obtain glass flakes, heating the glass flakes to precipitate ferrite fine grains, incompletely dissolving the glass flakes with an acid or boiling water, and separating and recovering the fine grains in the presence of a dispersing agent.

摘要翻译： 制造用于磁记录介质的六方晶系铁氧体磁粉的方法包括快速冷却玻璃形成组分和六方晶系铁素体形成组分的熔融材料以获得玻璃薄片，加热玻璃薄片以沉淀铁素体细晶粒，不完全溶解 玻璃用酸或沸水分散，并在分散剂存在下分离和回收细晶粒。

公开(公告)号：US4043028A

公开(公告)日：1977-08-23

申请号：US685903

申请日：1976-05-10

申请人： Yoshiyasu Koike ,  Hachio Shiraki ,  Eigen Suzuki ,  Makoto Yoshida

发明人： Yoshiyasu Koike ,  Hachio Shiraki ,  Eigen Suzuki ,  Makoto Yoshida

IPC分类号： C22F1/00 ,  H01B12/10 ,  H01B13/00 ,  H01L39/06 ,  H01L39/24 ,  H01V11/00

CPC分类号： H01L39/2409 ,  Y10S505/921 ,  Y10T29/49014

摘要： A method of making stabilized superconductors of a composition such as Nb.sub.3 Sn is disclosed. The method includes forming a stock product comprising a tin base alloy as a core with a copper jacket and having a niobium tube clad thereon. The stock product is then embedded in a good thermally and electrically conducting matrix which is then coreduced until the desired size is obtained. This cold worked product is then submitted to a heat treatment to form superconductors of Nb.sub.3 Sn.

摘要翻译： 公开了制备诸如Nb 3 Sn的组合物的稳定的超导体的方法。 该方法包括以铜夹套形成包含锡基合金作为芯的原料，并且在其上包覆有铌管。 然后将原料产品嵌入良好的导热和导电基质中，然后将其压干直到获得所需的尺寸。 然后将该冷加工产品进行热处理以形成Nb 3 Sn的超导体。