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11. 发明专利

DE3882871D1 未知
公开(公告)号：DE3882871D1
公开(公告)日：1993-09-16
申请号：DE3882871
申请日：1988-10-03
申请人： FUJIKURA LTD
发明人： IKENO YOSHIMITSU , KOHNO OSAMU , GOTO KENJI , KUME ATSUSHI , AOKI SHIN YA , SADAKATA NOBUYUKI , SUGIMOTO MASARU , USUI TOSHIO , NAKAGAWA MIKIO , YAMAGUCHI TAICHI
IPC分类号： C04B35/00 , H01L39/24
摘要： +28.10.87, 8.12.87, 6.11.87, 30.11.87, 30.11.87, 11.1.88, 28.12.87(2), 27.1.88, 8.3.88, 28.3.88(2),8.12.87, 6.11.87, 25.11.87, 2.10.87(2), 28.10.87, 6.11-87-JP-272303, 309998, 280450, 302178, 00329, 332407, 332408, 016305, 054042, 073929, 073928, 309996, 280452, 296704, 249525, 249526, 272304, 280453 A method of forming a superconducting wire, which includes a superconducting oxide, comprises the following steps:-filling material is charged into a metal pipe; the filling material consists of at least one of a powder of raw materials for superconductive oxide formn., a superconductive oxide powder, a compact made of the raw material powder or the superconducting oxide powder, (2) the resulting preform, comprising a core of filling material and a metal sheath, is reduced in cross sectional area, (3) metallic sheath of the area-reduced composite is removed, to expose the core, and (4) the exposed core is heat treated to expose the suprconducting oxide. The superconductive oxide has the formula AxByCzD7-d, where A is at least one of Sc, Y, La, Ce, Pr, Nd, Pm,Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu; B is at least one of Be, Sr, mg, Ca, Ba and Ra; C includes Cu; and the D includes O. x is 0.1-2.0, y is 1-3, z is 1-3 and d is 0-5. The pref. formula for the superconductive oxide is AxByCazCuiOj, where A includes Bi or Tl, and B includes Sr or Ba; -x is 1-3, y is 1-3, z is 1-3 and i is 0-4.

12. 发明专利

DE3880947D1 未知
公开(公告)号：DE3880947D1
公开(公告)日：1993-06-17
申请号：DE3880947
申请日：1988-10-03
申请人： FUJIKURA LTD
发明人： IKENO YOSHIMITSU , KOHNO OSAMU , GOTO KENJI , KUME ATSUSHI , AOKI SHIN YA , SADAKATA NOBUYUKI , SUGIMOTO MASARU , USUI TOSHIO , NAKAGAWA MIKIO , YAMAGUCHI TAICHI
IPC分类号： C04B35/45 , H01L39/12 , H01L39/14 , H01L39/24 , C04B35/00 , C04B41/88

13. 发明专利

JPH0545308A SURFACE ANALYZING APPARATUS 失效
公开(公告)号：JPH0545308A
公开(公告)日：1993-02-23
申请号：JP22872491
申请日：1991-08-14
申请人： KOKUSAI CHODENDO SANGYO GIJUTS , FUJIKURA LTD , SHOWA ELECTRIC WIRE & CABLE CO , ASAHI GLASS CO LTD
发明人： USUI TOSHIO , AOKI YUJI , KAMEI MASAYUKI , MORISHITA TADATAKA
IPC分类号： G01N23/225 , G01N23/223
摘要： PURPOSE:To obtain an apparatus which can capture the characteristic X rays from the surface of an excited sample and can analyze the component of the surface of the sample and wherein an energy dispersion type X-ray detector for capturing the characteristic X rays can be readily attached and removed. CONSTITUTION:An energy source for emitting energy particles into a sample 1 and an energy dispersion type X-ray detector 18 are attached to a vacuum container 20 for containing a sample 1. A connecting chamber 79 which is freely evaluated into the vacuum state is independently formed for the vacuum container 20. The energy dispersion type X-ray detector 28 is attached to the connecting chamber 79 so that the detector can be freely attached and removed. The characteristic X rays emitted from the surface of the excited sample 1 are captured at the total reflection angle. Thus, the component of the thin film of the surface of the sample 1 can be analyzed. When, the energy dispersion type X-ray detector 28 is removed from the connecting chamber 79, the detector can be removed without breaking the vacuum state of the vacuum container 20.

14. 发明专利

JPH0545307A METHOD AND APPARATUS FOR ANALYZING SURFACE 失效
公开(公告)号：JPH0545307A
公开(公告)日：1993-02-23
申请号：JP22872391
申请日：1991-08-14
申请人： KOKUSAI CHODENDO SANGYO GIJUTS , FUJIKURA LTD , ASAHI GLASS CO LTD , SHOWA ELECTRIC WIRE & CABLE CO
发明人： USUI TOSHIO , KAMEI MASAYUKI , AOKI YUJI , MORISHITA TADATAKA
IPC分类号： G01N13/00 , G01N23/223
摘要： PURPOSE:To improve the detecting accuracy at the thin part of the surface of a sample by emitting X rays on the sample at a low incident angle, generating fluorescence X rays from the sample, and taking out the X rays in the vicinity of the total reflection angle of the X rays with an energy-dispersion type X-ray detector. CONSTITUTION:X rays are emitted from an X-ray generator 48 on the surface of a sample 1 at an incident angle of about 4 deg. or less. Then, the part of the surface is excited, and the fluorescence X rays (characteristic X rays) are emitted. The characteristic X rays are rapidly increased at the specified take-out angle of 4 deg. or less (total reflecting angle). At this angle, the characteristic X rays are taken out with a probe 30 of an energy-dispersion X-ray detector 28. Thus, the characteristic X rays corresponding to the component of the thin film of the surface of the sample can be specified. With the incident angle of the X rays as THETAg, a diffraction-X-ray detecting device 18 is moved up and down along a rail member 17. The X-ray taking-out angle is adjusted so that the angle becomes 2THETAg with respect to the extending line of the X rays in the incident direction. Under this state, the sample 1 and the detecting device 18 are turned by the specified angle at the same time. Thus, the X-ray diffraction peak of the surface part of the sample can be detected.

15. 发明专利

JPH04134259A MEASURING METHOD FOR OXYGEN CONCENTRATION AND OXYGEN SENSOR 失效
公开(公告)号：JPH04134259A
公开(公告)日：1992-05-08
申请号：JP25823290
申请日：1990-09-27
申请人： KOKUSAI CHODENDO SANGYO GIJUTS , FUJIKURA LTD , MITSUBISHI HEAVY IND LTD , NIPPON STEEL CORP
发明人： USUI TOSHIO , OISHI AKIRA , TEJIMA HIDEKAZU , MORISHITA TADATAKA , TANAKA SHOJI
IPC分类号： G01N27/12 , H01B12/02
摘要： PURPOSE:To have measurement of oxygen concentration with excellent response and reproducibility by measuring the electric resistance value of an oxide superconductor under a certain temp. condition which is higher than the critical temp. CONSTITUTION:An oxide superconductive film 22 as a measuring element is formed over a base board (base material) 21, and an electric resistance measuring means 23 is connected on this superconductive film 22, and thus an oxygen sensor 20 is accomplished. The oxide superconductor has a certain electric resistance value for each concentration at a certain temp. higher than the critical temp., for example ranging 400-900 deg.C, and with a certain atmospheric pressure for example one atom if the oxygen concentration in the atmosphere is varied from 100% to 50, 20, and 10%. The resistance values at different temps. and oxygen partial pressure are measured in advance, and the data about them is grasped. Accordingly, if the resistance value is measured after the superconductive film 22 is placed in the intended measuring atmosphere, the oxygen concentration in the atmosphere can be determined instantly through comparing with the measurement value.

16. 发明专利

JPH01311519A MANUFACTURE OF OXIDE SUPERCONDUCTING WIRE MATERIAL 失效
公开(公告)号：JPH01311519A
公开(公告)日：1989-12-15
申请号：JP14101788
申请日：1988-06-08
申请人： FUJIKURA LTD
发明人： USUI TOSHIO , KONO TSUKASA , IKENO YOSHIMITSU
IPC分类号： H01B12/04 , H01B13/00
摘要： PURPOSE:To reduce time required for heat-treatment at the time of manufacturing a wire material by a method wherein an element wire is composed so that on its surface of linear, tubelike or tapelike substrate a material layer containing the respective elements constituting an oxide superconductor is formed, and this element wire is plasma-heated at a temperature lower than the melting point of the oxide superconducting material. CONSTITUTION:A substrate 3 wound around a roller 5a is moved to another roller 5b due to rotation of the rollers 5a, 5b located inside of a vessel of an apparatus. A plasma generating device 2 provided on a main body 1 is equipped with a cylindrical body 6 inserted into the main body 1 and a coil 7 provided around the cylindrical body 6. Plasma gas such as mixed gas of argon gas and oxygen is supplied from a gas supply port 8 provided at the upper end of the cylindrical body 6. A superconducting material 4 drops on the surface of this moving substrate 3, and plasma 10 is generated due to high frequency power supply to the coil 7. By plasma-heating an element wire 12, time required for heat treatment at the time of manufacturing a wire material can be reduced.

17. 发明专利

JPH01249609A PRODUCTION OF OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPH01249609A
公开(公告)日：1989-10-04
申请号：JP7858688
申请日：1988-03-31
申请人： FUJIKURA LTD
发明人： USUI TOSHIO , KONO TSUKASA , IKENO YOSHIMITSU
IPC分类号： H01L39/24 , C01B13/14 , C01G1/00 , C01G3/00 , C04B41/87 , C23C14/08 , C23C14/28 , C23C14/34 , H01B12/06 , H01B13/00
摘要： PURPOSE:To obtain an oxide superconductor having superior superconducting characteristics and having no oxygen deficiency by evaporating a target material consisting of the oxide superconductor (precursor) with laser, depositing the evaporated particles and irradiating the deposit with oxygen ions, forming thus a precursor film of the superconductor, and heat-treating the precursor film. CONSTITUTION:A target setting section 2 and an ion irradiation section 4, etc., are provided to the inside of a vessel 1 which can be adjusted to be held in vacuum. A target 8 consisting of an oxide superconductor or its precursor(e.g., Y1Ba2Cu3Ox) is disposed to a target setting section 2, and the target 8 is irradiated with laser beams generated by a laser generator 15. Thus, a part if the target 8 is evaporated and evaporated particles are deposited on a substrate 12. At the same time, the substrate 12 is irradiated with oxygen ions generated in an ion generating device 4, and a precursor film of an oxide superconductor is formed on the substrate 12. The oxide superconductor is obtd. by heat-treating the precursor film thereafter.

18. 发明专利

JPH01242407A PRODUCTION OF OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPH01242407A
公开(公告)日：1989-09-27
申请号：JP6883988
申请日：1988-03-23
申请人： FUJIKURA LTD
发明人： USUI TOSHIO , KONO TSUKASA , IKENO YOSHIMITSU , SADAKATA NOBUYUKI , AOKI SHINYA , SUGIMOTO MASARU , NAKAGAWA MIKIO , YAMAGUCHI TAICHI , KUME ATSUSHI , GOTO KENJI , IIJIMA YASUHIRO
IPC分类号： H01L39/24 , C01B13/20 , C01G1/00 , C01G3/00 , C30B29/22 , H01B12/06 , H01B13/00
摘要： PURPOSE:To improve the orientation and to increase the critical temp. and critical current density by conveying specified vaporized particles with a carrier gas, and impressing a DC magnetic field on the conveying space to orient the particles. CONSTITUTION:The mixed powder of the compds. contg. elements (e.g., Eu and Gd) having high magnetic susceptibility is sintered to obtain oxide superconducting powder. The powder is then placed in a crucible 6, and melted to form a melt. Meanwhile, a carrier gas is sent into a vaporization chamber 1, passed through an inlet pipe 7, a recovery chamber 2, and a deposition space 12, and discharged from an exhaust hole 15. Solenoid coils 9 and 10 are simultaneously energized, and a DC magnetic field is impressed on the inner space of the pipe 7 in the lengthwise direction of the pipe 7. A substrate, etc., are then set in the deposition chamber 3 and on the inner surface of the partition wall 11. The fine particles of the elements having high magnetic susceptibility and vaporized from the crucible 6 are allowed to ascend in the pipe 7, oriented by a DC magnetic field, and deposited on the substrate in the chamber 3 and on the wall 11 to form a layer. The substrate is then sintered at 850-950 deg.C in an O2 atmosphere to produce an oxide superconductor.

19. 发明专利

JPH01192706A PRODUCTION OF RAW MATERIAL POWDER FOR OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPH01192706A
公开(公告)日：1989-08-02
申请号：JP1497988
申请日：1988-01-26
申请人： FUJIKURA LTD
发明人： USUI TOSHIO , KONO TSUKASA , IKENO YOSHIMITSU , SADAKATA NOBUYUKI , AOKI SHINYA , SUGIMOTO MASARU , NAKAGAWA MIKIO , YAMAGUCHI TAICHI , KUME ATSUSHI , GOTO KENJI
IPC分类号： H01L39/24 , C01B13/28 , C01G1/00 , C01G3/00 , H01B13/00
摘要： PURPOSE:To readily obtain in high efficiency the title raw material powder of extremely fine size capable of giving oxide superconductor excellent in superconducting characteristics, by introducing a raw material gas containing the constituent elements for the aimed oxide superconductor into a hot plasma to carry out pyrolysis followed by cooling. CONSTITUTION:Firstly, a raw material gas containing the constituent elements for the aimed oxide superconductor. Said raw material gas is e.g., a mixed gas prepared by mixing tri-hexafluoracetylacetone-yttrium complex of formula I, bis-hexafluoracetylacetone-barium complex of formula II and bis- hexafluoracetylacetone-copper complex of formula III so as to be 1:2:3 for the element weight ratio Y:Ba:Cu. Thence, this raw material gas is fed, via a pipe 4, into an apparatus 1 for generating a hot plasma flame P to introduce said gas into said flame P to pyrolyze the gas followed by cooling, thus obtaining the objective powder S for oxide superconductor.

20. 发明专利

JPH01175121A MANUFACTURE OF OXIDE SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH01175121A
公开(公告)日：1989-07-11
申请号：JP33240787
申请日：1987-12-28
申请人： FUJIKURA LTD
发明人： KUME ATSUSHI , KONO TSUKASA , IKENO YOSHIMITSU , SADAKATA NOBUYUKI , SUGIMOTO MASARU , AOKI SHINYA , USUI TOSHIO , NAKAGAWA MIKIO , YAMAGUCHI TAICHI , GOTO KENJI
IPC分类号： C04B35/00 , B28B1/00 , C01B13/32 , C01G1/00 , C04B35/45 , H01B13/00
摘要： PURPOSE:To obtain a superconducting wire with high critical current density and excellent mechanical strength by adding acid and a basic material to a solution containing the constituting elements of an oxide superconductor to obtain a neutralized aqueous solution, crushing a mixture obtained by heating it to obtain a homogeneous fine grain powdery material, compressing it to the specific density and heat-treating it. CONSTITUTION:Citric acid or the like is added to an aqueous solution containing the elements constituting an oxide superconductor. A basic material such as ammonia is added into the aqueous solution and neutralizes it to obtain a neutralized aqueous solution with about pH 7. The neutralized aqueous solution is heated to obtain a sponge-shaped mixture. The mixture is crushed with a ball mill or the like to obtain mixed powder, it is dust-molded to produce a dust molded body 1. The molded body 1 is stored in a metal tube 2 to produce a composite body 3. The composite body 3 is shrinkage-processed by a rotary swaging device A, for example. The shrinkage processing is repeated until the density of a core becomes 75% or above of the theoretical density. A wire 13 thus obtained is heat-treated in the oxygen atmosphere to produce an oxide superconducting wire.

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