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61. 发明专利

JPH04229509A SUPERCONDUCTIVE WIRE AND ITS MANUFACTURE 失效
公开(公告)号：JPH04229509A
公开(公告)日：1992-08-19
申请号：JP11308291
申请日：1991-05-17
申请人： TOSHIBA CORP
发明人： MURASE AKIRA , NAKAYAMA SHIGEO
IPC分类号： B21F19/00 , H01B12/02 , H01B13/00 , H01L39/14
摘要： PURPOSE:To offer a superconductive wire having strong and constantly. stable performance to the application of hooping force (acting as tensil force in a conductor's longitudinal direction) and lateral compressive force generated by electromagnetic force even e.g. a coil is composed. CONSTITUTION:A housing material layer 2, surrounding a linear superconductive wire main body 1 with a given gap, is arranged on the outer peripheral side of the said main body 1. A filling solder layer 3 as a stress relaxing layer is formed between the superconductive wire main body 1 and the housing material layer 2. An interval between a plane, where a load in a vertical direction to the longitudinal direction of the superconductive wire main body 1 is applied, and the housing material layer is set at least one side of 0.25mm or more. Or the filling solder layer 3 is formed so that a space 6 can be left between the superconductive wire main body 1 on a plane side where the said load is mainly applied and the housing material layer.

62. 发明专利

JPH0461104A SUPERCONDUCTING MAGNET APPARATUS 失效
公开(公告)号：JPH0461104A
公开(公告)日：1992-02-27
申请号：JP16455490
申请日：1990-06-22
申请人： TOSHIBA CORP
发明人： MURASE AKIRA , YAMAMOTO KAZUO
IPC分类号： H01F6/06 , H01F6/00 , H01F6/04
摘要： PURPOSE:To improve superconduction characteristics with increase in temperature margin of superconduction by using an oxide superconductor of high critical temperature as the superconducting coil, and helium as the refrigerant. CONSTITUTION:A heat-insulating container 4 is filled with liquid helium 9 as the refrigerant, and is further provided with a first solenoid coil formed by winding a copper stabilized Nb3Sn superconductor 1a, a second solenoid coil 2 formed by winding an Nb3Sn superconductor 2a, and a third solenoid coil 3a. The metal coils 1,2 are electrified by a power source 12 through current leads 10a,10b,6a,6b; and the oxide superconductor coil 3 is electrified by a power source 13 through current leads 11a,11b,7a,7b. This process can maintain a superconducting state with high and stable temperature margin and increase critical current and critical magnetic field.

63. 发明专利

JPH03171516A MANUFACTURE OF COMPOUND SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH03171516A
公开(公告)日：1991-07-25
申请号：JP30900089
申请日：1989-11-30
申请人： NAT RES INST METALS , TOSHIBA CORP
发明人： INOUE TADASHI , TAKEUCHI TAKAO , ITO KIKUO , YAMAMOTO KAZUO , MURASE AKIRA
IPC分类号： B21F19/00 , C22F1/00 , C25D7/06 , H01B12/10 , H01B13/00
摘要： PURPOSE:To increase the Sn concentration of an alloy matrix and improve critical current density by applying Sn plating having specific thickness to an inside stabilization bronze wire having specific Sn concentration, and moreover making heat treatment under a given condition. CONSTITUTION:In an inside stabilization bronze wire, the followings are formed: a Cu stabilization material 1 at the center, a Ta diffusion barrier 2 buried in the periphery of the Cu stabilization material 1, and moreover a Cu-Sn alloy matrix 3 having a containing Sn concentration of 5-15wt.%, in which a filament 4 composed of Nb-Ta alloy is buried in the periphery of the barrier 2. Sn plating 5 having a thickness of 0.1--5% of a wire material outer diameter is applied to the wire material surface. Next the diffusion heat treatment of Sn is made to increase the mean Sn concentration of the matrix 3 to the solution limit of an alpha alloy phase of 8-35wt.%. Moreover the critical current density of a bronze superconductive wire can be improved by making Nb-Sn production heat treatment at a given temperature rising rate.

64. 发明专利

JPS6489476A SUPERCONDUCTING PERMANENT CURRENT SWITCH 失效
公开(公告)号：JPS6489476A
公开(公告)日：1989-04-03
申请号：JP24608787
申请日：1987-09-30
申请人： TOSHIBA CORP
发明人： TANAKA MINORU , MURASE AKIRA , TAKANO ICHIRO
IPC分类号： H01L39/20 , H01F6/00 , H01H33/00
摘要： PURPOSE:To be small-sized and highly efficient for heightening reliability by using an oxide ceramics superconductor as the superconductor of a superconductive permanent current switch and burying this and a heater in ceramics base metal. CONSTITUTION:An oxide ceramics superconductive wire 1 is made of perovskite type oxide ceramics containing rare earth elements, for instance, constituting YBaCuO system oxide ceramics, and this is laser-processed to make a supercouductive wire rod. A ceramic base material 3 shall be an oxide ceramics of the same system with the superconductive wire 1. At the time of pressure firing of this ceramics base material 3, the oxide ceramics superconductive wire 1 and a heater wire 2 are simultaneously buried therein en bloc. Thereby, the superconductive wire 1 and the heater wire 2 are strongly made en bloc with good acclimation, and especially, even when they are cooled under the superconductive transition temperature, no thermal strain is generated so as to heighten reliability.

65. 发明专利

JPS6487767A FILM FORMING DEVICE BY LASER LIGHT 失效
公开(公告)号：JPS6487767A
公开(公告)日：1989-03-31
申请号：JP24599987
申请日：1987-09-30
申请人： TOSHIBA CORP
发明人： NAKAMURA SUGURU , KINOSHITA JUNICHI , SASAKI MITSUO , MURASE AKIRA , YAMADA MINORU
IPC分类号： C23C14/28 , C01G1/00 , C01G3/00 , C30B29/22 , H01B12/06 , H01B13/00 , H01L21/208 , H01L39/24
摘要： PURPOSE:To optimize the respective effect of dissolving a powder material and the acceleration of the deposition of a metallic compd. on a substrate and to uniformize the energy density of laser beams by using 1st and 2nd laser projecting means so that the laser beams are projected in the routes different from the supply route of the powder material. CONSTITUTION:A DC high voltage is impressed between a substrate 22 and an electrode 34. Gaseous O2 is simultaneously supplied from a cylinder 33 and the powder material is supplied from a supplying device 31 to respective nozzles 30 so that the powder material is ejected into a vacuum chamber 20 by the gaseous O2. The gaseous O2 is activated by the glow discharge generated between the substrate 22 and an electrode 34 at this time and the substrate 22 is heated by supplying electric power from a power supply 24 to a heater 23. The laser beam is outputted from a light source 40 and is projected by the 1st projecting means 41 in the direction orthogonal with the supply directions of the gaseous O2 and the powder material and the above- mentioned discharge direction to melt the powder material. Furthermore, the laser beam is projected from the direction different from the means 41 by the 2nd projecting means 45, by which the deposition of the metallic compd. on the substrate 22 is assisted.

66. 发明专利

JPS6433871A CONNECTING METHOD FOR COMPOUND SUPERCONDUCTIVE CABLE 失效
公开(公告)号：JPS6433871A
公开(公告)日：1989-02-03
申请号：JP18824687
申请日：1987-07-28
申请人： TOSHIBA CORP
发明人： MURASE AKIRA , SHIRAKI KAZUO
IPC分类号： H01R43/00
摘要： PURPOSE:To obtain the connection of about 10 OMEGA or lower by bringing filaments at the end section into contact with each other before the heat treatment is applied, enveloping the connection section with a base metal or the same material as the base metal, and applying the temperature and pressure to connect the filaments to each other in a solid phase diffusion state. CONSTITUTION:Prior to the heat treatment, a base metal 1 is melted and removed with nitric acid over the length range of 3cm from the end section of wires 4a, 4b, for example, part of filaments 3 are exposed, the whole exposed filament portions 3a are overlapped and inserted into a sleeve 7 formed with the same composition material as the base metal 1. Part of the sleeve 7 covers the base metal 1 of the wires 4a, 4b, and the copper alloy powder with the same composition as the sleeve 7 is filled in the sleeve 7. The pressure is applied to the sleeve 7 to crush the sleeve 7, then the sleeve 7, filament portions 3a, copper alloy powder, and end sections of wires 4a, 4b are integrated, the portion fitted with the sleeve 7 is heated, then the filament portions 3a are kept in a solid phase diffusion connection state, and the connection of about 10 OMEGA or below is realized.

67. 发明专利

JPS6410525A MANUFACTURE OF COMPOUND SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPS6410525A
公开(公告)日：1989-01-13
申请号：JP16587987
申请日：1987-07-02
申请人： TOSHIBA CORP
发明人： NAKAYAMA SHIGEO , YAMADA MINORU , MURASE AKIRA , FUKUSHIMA EIJI
IPC分类号： B28B1/00 , C01G1/00 , C04B35/00 , C04B35/45 , H01B12/04 , H01B13/00
摘要： PURPOSE:To form a wire rod with the high critical temperature and high critical current density at a low cost by storing a mixture of multiple kinds containing the elements capable of synthesizing an oxide compound superconductor in a coated tube with the double-tube structure of a copper net on the inside and silver on the outside, linearly face-reduction-machining it, and heat-treating it in the oxygen gas atmosphere. CONSTITUTION:Y2O3 powder, BaCO3 powder, and CuO powder are mixed with the mol ratio of 0.5:2.0:3.0 into a powder mixture 1, which is temporarily baked for 2hr at 900 deg.C in the air then crushed and further pulverized with a ball mill. It is stored in a coated tube 4 with the double-tube structure constituted of a silver tube 2 with the outer diameter of 14mm, inner diameter of 13mm, and length of 70mm and a copper net tube 3 with the outer diameter of 12.8mm, inner diameter of 11.0mm, and length of 70mm located on its inside, both end openings are sealed and drawing-machined to form a wire rod 5 with the diameter of about 0.5mm. The whole thickness of the coating material 6 of this wire rod 5 is 200mum, 10mum of which is a silver layer 7 and the remaining portion is a copper layer 8. The heat treatment is then applied for 24hr at 900 deg.C in the oxygen gas.

68. 发明专利

JPS63292531A MANUFACTURE OF SUPERCONDUCTIVE WIRE OF COMPOUND 失效
公开(公告)号：JPS63292531A
公开(公告)日：1988-11-29
申请号：JP12881387
申请日：1987-05-26
申请人： TOSHIBA CORP
发明人： YAMADA MINORU , NAKAYAMA SHIGEO , MURASE AKIRA , NAKAMURA SUGURU , SASAKI MITSUO
IPC分类号： B28B1/00 , C01G1/00 , C04B35/00 , C04B35/45 , H01B12/06 , H01B13/00
摘要： PURPOSE:To provide a wire with high critical amperage density by forming an oxide layer on the base in close contact, wherein the oxide layer serves as a mother material for compound superconductive body of oxide type, irradiating laser beam thereon, and melting and solidifying this oxide layer. CONSTITUTION:An oxide layer 4 as mother material for compound superconductive body of oxide type is formed on the base 2 in such a way as closely contacted, and laser beam 6 is irradiated onto this formed oxide layer 4 to cause melting and solidification of the oxide layer 4. The oxide layer as mother material can also be formed by any method similar to the powder method or a sputter method. When oxide layer is formed by a method similar to the powder method, mixture powder is subjected to preliminary baking in the air at 850-950 deg.C for 1-100 hr, and the product is crushed followed by sintering in oxygen gas atmosphere at 850-950 deg.C for 5-200 hr, and this sintering shall preferably be crushed and the obtained powder be put in close contact with the base. This provides a compound superconductive wire having large critical amperage and high critical temp. characteristic peculiar to compound superconductive body of oxide type.

69. 发明专利

JPS63289725A MANUFACTURE OF COMPOUND SUPERCONDUCTIVE THIN FILM 失效
公开(公告)号：JPS63289725A
公开(公告)日：1988-11-28
申请号：JP12461287
申请日：1987-05-21
申请人： TOSHIBA CORP
发明人： YAMADA MINORU , NAKAYAMA SHIGEO , MURASE AKIRA
IPC分类号： H01L39/24 , C01G1/00 , C04B41/87 , C23C14/06 , H01B12/06 , H01B13/00 , H01L39/12
摘要： PURPOSE:To secure a compound superconductive thin film in an oxide system by installing an evaporation layer of composition L-Ba-Cu containing the specified metal L, on a substrate, and performing heat treatment in an oxygen atmosphere. CONSTITUTION:Metal L is selected out of Y, Er, Dy, Sm, Gd, Ho, Nd, Yb, Tm and Lu. For example, a disk consisting of Y1Ba2Cu3 is used for a target and thereby a thin film of 1mum or so in thickness is produced on the surface of an SiO2 in Ar gas by means of a spatter process. Next, when heat treatment for two hours at a temperature of 900 deg.C is added to this film under oxygen gas flowing, a compound superconductive layer with composition of Y1Ba2Cu3 O7-Y is securable. According suchlike constitution, such a thin film with a high critical temperature characteristic inherent in an oxide compound superconductor is formable in a good reproducible manner.

70. 发明专利

JPS63287010A MANUFACTURE OF SEPERCONDUCTING COIL 失效
公开(公告)号：JPS63287010A
公开(公告)日：1988-11-24
申请号：JP12185987
申请日：1987-05-19
申请人： TOSHIBA CORP
发明人： YAMADA MINORU , NAKAYAMA SHIGEO , MURASE AKIRA
IPC分类号： C04B35/00 , B28B3/02 , C01G1/00 , C04B35/45 , H01F6/06
摘要： PURPOSE:To manufacture a coil without cracking and distortion by containing a spiral separation filler in a compression cavity of a metal mold, filling mixture therein, applying an axial compression force to the content in the cavity to obtain a compression block, and heat treating the block. CONSTITUTION:Spirally formed separation filler 5 is contained in compression cavities of metal molds 3, 4 having a cylindrical compression cavity, and the step of filling mixture 1 of several types of powders including elements to be synthesized with oxide compound superconductor in the cavity formed by the presence of the filler 5 is provided. Then, the content in the cavity 2 is applied by axial compression force of 1000 kg/cm larger to provide the step of obtaining a cylindrical compress block. Then, the step of heat treatment for the block in an oxygen atmosphere is provided. Thus, the number of turns of the filler 5 set to simply manufacture a superconducting coil of desired num ber of turns is simply manufactured, shaped in a coil form, then heat treated at 850-950 deg.C for 2 hours. Accordingly, the superconducting layer is manufac tured without cracking and deformation.

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