专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

71. 发明专利

JPH0992052A SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH0992052A
公开(公告)日：1997-04-04
申请号：JP24431995
申请日：1995-09-22
申请人： TOSHIBA CORP , TOSHIBA SYST TECH KK
发明人： TEZUKA MASARU , NAKAYAMA SHIGEO , KOSHIRO TETSUYA
IPC分类号： H01B12/10 , H01B13/00
摘要： PROBLEM TO BE SOLVED: To prevent the development of distorsion and a crack to maintain a high critical current density, by having structure for protecting a superconductive filament group from mechanical pressure. SOLUTION: In a superconductive wire; having a coaxial superconductive filament group, and comprising the outer peripheral surface of the superconductive filament group covered by a reinforcing material, a superconductive wire can be obtained which is provided with a cushioning member 15 at least in a part between a reinforcing material 16 and the superconductive filament group.

72. 发明专利

JPH04188513A MANUFACTURE OF OXIDE TYPE SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH04188513A
公开(公告)日：1992-07-07
申请号：JP31705090
申请日：1990-11-21
申请人： TOSHIBA CORP
发明人： NAKAYAMA SHIGEO
IPC分类号： H01B12/04 , H01B13/00
摘要： PURPOSE:To reduce the directionality (anisotropy) for magnetic field by filling an Ag pipe with a powder of oxide type superconducting substance compressedly using a pressing member whose foremost surface is inclined. CONSTITUTION:An Ag pipe 1 is filled with a powder of oxide type superconducting substance compressedly using a pressing member 3, whose foremost surface is inclined, for example in a cone. According to this method of filling, the powder is stratified densely, each layer being inclined, and in this condition, processes of dia. contraction and drawing into wire are conducted. Thus an oxide type superconducting wire covered with Ag layer can easily be accomplished, in which directionality (anisotropy) for magnetic field is reduced to a great extent.

73. 发明专利

JPH0436910A MANUFACTURE OF OXIDE SUPERCONDUCTING WIRE ROD 失效
公开(公告)号：JPH0436910A
公开(公告)日：1992-02-06
申请号：JP14296290
申请日：1990-05-31
申请人： TOSHIBA CORP
发明人： NAKAYAMA SHIGEO
IPC分类号： C04B35/00 , C01B13/14 , C01G1/00 , C04B35/45 , H01B12/04 , H01B13/00
摘要： PURPOSE:To provide a practicable critical current density and also decrease dispersion of the critical current density by a method wherein the reduction of area of a metal tube filled with superconducting powder is performed after the metal tube is made to pass through a magnetic field at a temperature lower than the critical temperature of an oxide superconductor when the area of the metal tube is reduced to a desired shape of wire rod to manufacture an oxide superconducting wire rod. CONSTITUTION:Immediately after a magnetic field treatment at a temperature of liquid nitrogen is applied to a silver pipe filled with oxide superconducting powder, reduction-of-area work of the silver pipe is performed. A magnetic field at liquid nitrogen to be used for magnetic field treatment is formed by arranging a magnet 2 of 7500 gausses at the lower part of a glass tube 1 having an inlet 1a of liquid nitrogen and flowing liquid nitrogen into the glass tube 1. Then, the silver pipe 4 filled with the oxide superconducting powder 3 is cooled by liquid nitrogen and also made to pass through the inside of the glass tube 1 to which magnetic field is applied by a permanent magnet 2, and immediately thereafter, the silver pipe 4 is made to pass through between a pair of working rollers 5 to perform reduction of area and make a strand 6 or the prototype of an oxide superconducting wire rod.

74. 发明专利

JPH0422016A MANUFACTURE OF COMPOUND SUPERCONDUCTOR 失效
公开(公告)号：JPH0422016A
公开(公告)日：1992-01-27
申请号：JP12640290
申请日：1990-05-15
申请人： TOSHIBA CORP
发明人： NAKAYAMA SHIGEO
IPC分类号： C22F1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To maintain the electric resistance of a stabilizer at low level without providing am anti-diffusion layer comprising Ta and so on by catching an impurity element diffused in the stabilizer as an oxide. CONSTITUTION:After a Cu layer 13 including oxygen is integrated into the outside of a Cu matrix 11, or after an oxide layer 15 is formed on the outside of the Cu matrix 11, a Cu layer 13 for stabilizer is integrated therewith. Another oxide layer is formed on the outside of the Cu layer 13 for stabilizer, and a component element and the like of a compound superconductor such as Sn is caught as an oxide by utilizing the oxygen diffused from the oxide layer, and the diffusion thereof in the Cu layer for stabilizer is prevented. The electric resistance of the stabilizer can thus be maintained at low level without providing an anti-diffusion layer comprising Ta and so on.

75. 发明专利

JPH02276111A COMPOUND SUPERCONDUCTOR AND ITS MANUFACTURE 失效
公开(公告)号：JPH02276111A
公开(公告)日：1990-11-13
申请号：JP14748489
申请日：1989-06-08
申请人： TOSHIBA CORP
发明人： NAKAYAMA SHIGEO , SHIRAKI KAZUO , MURASE AKIRA , SHIMAMURA KEIZO , KOBANAWA YOSHIKO
IPC分类号： H01B12/10 , H01B13/00 , H01L39/14 , H01L39/24
摘要： PURPOSE:To prevent the decrease of a resistance value due to diffusion of impurity elements in a stabilizing material by forming a strong diffusion preventive layer made of oxide containing superconductors forming elements between a compound superconductor and the stabilizing material. CONSTITUTION:For a Nb3Sn superconductive wire, the first diffusion preventive layer 24 made of Nb, the second diffusion preventive layer 25 made of Nb oxide, Sn oxide, Ti oxide, etc., a stabilizing material 26 made of Cu are sequentially formed on the outer periphery of a structure 20, in which core wires 23 with the Nb3Sn layers 22b formed on Nb wires 22a are distribution-buried in a Cu-Sn material 21. The second diffusion preventive layer 25 is formed in such a manner that a Cu oxide thin layer is formed on the surface of the stabilizing material and heat-treated under a non-oxidized atmosphere or under lower oxygen content pressure than the oxygen content pressure in the atmosphere under which the Cu oxide thin layer is formed on the surface of the stabilizing material.

76. 发明专利

JPH01247881A AUTOMATIC VALVE FOR REFRIGERANT 失效
公开(公告)号：JPH01247881A
公开(公告)日：1989-10-03
申请号：JP7184288
申请日：1988-03-28
申请人： TOSHIBA CORP
发明人： NAKAYAMA SHIGEO
IPC分类号： F16K41/10
摘要： PURPOSE:To design automation of a refrigerant charging work by constituting the subject automatic valve so that vertical or horizontal movement of a valve body associated with the opening and closing of the valve is absorbed by an extending and contracting bellows. CONSTITUTION:An output gear 20 attached to a valve body nut 11 is connected to a motor pinion gear 19. When opening the valve, the rotation of a motor 18 is transmitted to the output gear 20 by the rotation of the pinion gear 19. Simultaneously with the rotation of the output gear 20, the valve body nut 19 also rotates in the direction to open. The valve body 14, while depressing a bellows 21 by means of a coil spring 12, comes down to open the valve. Refrigerant flows out of a hole 22 to the side of a cryostat. When closing the valve, the motor 18 is rotated in the opposite direction.

77. 发明专利

JPH01163914A MANUFACTURE OF OXIDE SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH01163914A
公开(公告)日：1989-06-28
申请号：JP32172487
申请日：1987-12-19
申请人： TOSHIBA CORP
发明人： YAMADA MINORU , NAKAYAMA SHIGEO , KOIZUMI MISAO , MURASE AKIRA
IPC分类号： B28B1/00 , C01G1/00 , C04B35/45 , H01B12/04 , H01B13/00
摘要： PURPOSE:To prevent the generation of bores and cracks, and to manufacture a superconductive wire of a high critical current density by introducing a columnar body formed by applying a pressure to an oxide superconductor powder, or a sintered body made by applying a heat treatment after such a pressure-formation, in a metal pipe, a surface reduction process is applied to the metal pipe, and heat-treating in the oxygen ambiance as it is or after the metal pipe is removed. CONSTITUTION:When an oxide superconductive wire is manufactured by using no reinforcement material, an oxide superconductor powder is formed by applying a pressure to make into a columnar body 2a with the outer diameter a little smaller than the inner diameter of a metal pipe 1, and the columnar body 2a is led in the metal pipe 1. Or, plural short column bodies 2b formed in the same way, or divided bodies 2c divided plurally are led in the metal tube 1 in series. On the other hand, when a reinforcement is used, a columnar body 2d with the outer diameter a little smaller than the inner diameter of the metal pipe and with holes 4 to insert reinforcements in the form of rotus root is formed by applying a pressure to the oxide superconductor powder, and linear reinforcement materials 3a are inserted to the holes 4, as well as the columnar body 2d is inserted to the metal pipe 1.

78. 发明专利

JPH01163913A MANUFACTURE OF OXIDE SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH01163913A
公开(公告)日：1989-06-28
申请号：JP32171187
申请日：1987-12-19
申请人： TOSHIBA CORP
发明人： YAMADA MINORU , NAKAYAMA SHIGEO , MURASE AKIRA
IPC分类号： H01B12/02 , B28B1/00 , H01B13/00
摘要： PURPOSE:To make the volume contraction of an oxide superconductor smooth and to improve the critical current density of a superconductive wire by arranging a metallic core material in a metal pipe in the longitudinal direction, filling an oxide superconductor powder between the core material and the metal pipe, removing the metal layer at the outer periphery after a wiredrawing process is applied, and heat-treating in the ambiance including oxygen. CONSTITUTION:A perovskite structure oxide superconductor powder 1 with a specific ratio of the diameter to the thickness is filled in a copper pipe 3, in which a silver core wire 2 has been arranged in the longitudinal direction, and one end has been sealed with a copper material. The other end of the copper pipe 3 is sealed with a copper material after that. Then, a wiredrawing process is applied to obtain a raw wire, the copper layer around the raw wire is removed, and a heat treatment is applied in the ambiance including oxygen. And an oxide superconductor layer 5 is formed around the silver layer 4, and a superconductive wire 6 is manufactured. The metallic core material is made of silver, gold, platinum, paradium, or an alloy of them, and the volume contraction of the oxide superconductor can be made smoothly, the mechanical strength is improved, and the critical current density is increased.

79. 发明专利

JPH01161626A OXIDE SUPERCONDUCTING WIRE AND ITS MANUFACTURE 失效
公开(公告)号：JPH01161626A
公开(公告)日：1989-06-26
申请号：JP32073887
申请日：1987-12-18
申请人： TOSHIBA CORP
发明人： MURASE AKIRA , NAKAYAMA SHIGEO , KOIZUMI MISAO , YAMADA MINORU
IPC分类号： B28B1/00 , H01B12/06 , H01B13/00
摘要： PURPOSE:To shorten the heat treatment time and obtain high critical current density by filling an oxide superconductor in a tape-shaped hollow body formed with an oxygen-permeable metal and applied with irregularity processing. CONSTITUTION:Oxide superconductor powder 2 is filled in a metal tube 1 made of an oxygen-permeable metal such as silver or silver alloy, both ends are sealed by a material with the same quality. It is then applied with warm forging and cold-wire-drawn and shrinkage-processed to be flatly compressed, and irregularity processing is applied to at least one of its faces. The peripheral length of an oxide superconducting wire at an optional cross section is thereby extended, the heat treatment time for oxygen introduction can be shortened, oxygen is uniformly fed to the oxide superconductor 2 in the metal cover 1, thus high critical current density is obtained.

80. 发明专利

JPH01161620A MANUFACTURE OF OXIDE SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH01161620A
公开(公告)日：1989-06-26
申请号：JP32043387
申请日：1987-12-18
申请人： TOSHIBA CORP
发明人： KOIZUMI MISAO , YAMADA MINORU , NAKAYAMA SHIGEO
IPC分类号： B28B1/00 , H01B12/02 , H01B13/00
摘要： PURPOSE:To obtain a superconducting wire with sufficient mechanical strength and high superconductive characteristic by sticking a raw material solution synthesizing a compound superconductor to a reinforcing material such as a tape, stack-winding it on a core, evaporating an organic solvent, removing the core, and applying heat treatment in the oxygen atmosphere. CONSTITUTION:A solution 4 obtained by solving a raw material capable of synthesizing an oxide compound superconductor with an organic solvent is stuck to a reinforcing material made of a tape 2, a sheet or threads formed with carbon fibers or quartz fibers, the reinforcing material is stack-wound on a core 6 to form a stack-wound layer 8. The stack-wound layer 8 is dried, the organic solvent is evaporated, the core 6 is removed, heat treatment is applied to the stack-wound layer 8 in the oxygen atmosphere, and a compound superconductor is synthesized with the raw material. Since the reinforcing material abundant in heat resistance is incorporated, cracks generated at the time of heat treatment are suppressed, and a superconducting wire with high superconductive characteristic and abundant in mechanical strength is obtained.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式