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1. 发明专利

JPH02232370A METHOD FOR EVAPORATING CVD RAW MATERIAL FOR PRODUCING OF SUPERCONDUCTOR 失效
公开(公告)号：JPH02232370A
公开(公告)日：1990-09-14
申请号：JP5409889
申请日：1989-03-07
申请人： FUJIKURA LTD , CHUBU ELECTRIC POWER
发明人： AOKI SHINYA , YAMAGUCHI TAICHI , KAGAWA AKIRA , KONO TSUKASA , OSANAI YUTAKA , SHINADA TOMOAKI
IPC分类号： C01B13/20 , C01G1/00 , C01G3/00 , C23C16/30 , C23C16/44 , C23C16/448 , H01B12/04 , H01B13/00 , H01L39/24
摘要： PURPOSE:To prevent the decomposition of evaporated compds. and to accelerate evaporation reaction by previously introducing a carrier gas into the ligand of complex compds. of Ba and Ca, etc., introducing the gas contg. this ligand into the complex compds. after bubbling to evaporate the complex compds. and using this gas as a gaseous raw material. CONSTITUTION:A ligand bubbler housing the ligand of the complex compds. contg. Ba, etc., as group IIa elements of periodic law table is provided on the upstream of a vaporizer of the complex compds. of Ba, etc., in the case of using the above- mentioned complex compds. as the subject gaseous raw material. The carrier gas is introduced into the ligand of the complex compds. to execute bubbling and to saturate the evaporating atmosphere of the complex compds. with the gas of the ligand before the carrier gas is introduced into the above-mentioned vaporizer. The decomposition of a part of the complex compds. at the time of evaporating the complex compds. to compds. (solid) of Ba, etc., and the ligand (gas) is prevented in this way. The evaporation and transportation of the complex compds. of Ba, etc., are, therefore, executed in a good state and the deficiency of Ba, etc., in an oxide series superconductor to be formed by a chemical vapor deposition method is prevented.

2. 发明专利

JPH02221394A FORMATION OF LAMINATED ANODIZED ALUMINUM COATING FILM 失效
公开(公告)号：JPH02221394A
公开(公告)日：1990-09-04
申请号：JP4215589
申请日：1989-02-22
申请人： FUJIKURA LTD
发明人： MAEJIMA SEIJU , SARUWATARI KOICHI , FUKUDA TAKERU , OSANAI YUTAKA
IPC分类号： C25D11/16
摘要： PURPOSE:To form a laminated anodized aluminum coating film having improved cracking resistance and adhesion to a coating film by forming a boehmite layer on the surface of an Al base and then forming an anodized aluminum coating film between the Al base and the boehmite layer by anodic oxidation. CONSTITUTION:An aq. soln. contg. about 0.1-5vol.% triethanolamine, etc., is heated to about 85-100 deg.C and a pretreated Al base 1 is immersed in the heated soln. for about 10sec-3min to form a boehmite layer 3. The Al base 1 is then washed and anodically oxidized to form a porous anodized aluminum coating film 2 between the boehmite layer 3 and the Al base 1. The pref. thickness of the anodized aluminum coating film 2 is about 10-100mum and that of the boehmite layer 3 is about 0.05-2mum. A laminated anodized aluminum coating film not causing cracking and having superior wear resistance, electrical characteristics and a black surface is obtd.

3. 发明专利

JPH02109210A CABLE FOR AUDIO 失效
公开(公告)号：JPH02109210A
公开(公告)日：1990-04-20
申请号：JP26334688
申请日：1988-10-19
申请人： FUJIKURA LTD
发明人： KUROSAKA AKITO , TAKAYAMA TERUYUKI , TOMINAGA HARUO , TOMOMATSU KAZUHIKO , OSANAI YUTAKA
IPC分类号： H01B1/02 , H01B11/00
摘要： PURPOSE:To made it excellent in all the sound quality such as clearness of sound, expansion of a sound field, stability in localization of sound image, etc., when it is used as a lead wire, a cord, or the like of audio equipment and to enable excellent sound quality to be obtained stably by constituting it out of a copper conductor whose oxygen content is 20ppm or less and whose residual resistance ratio is 500 or more. CONSTITUTION:This is constituted of copper conductor whose oxygen content is 20ppm or less and whose residual resistance ratio is 500 or more. Chemical impurity amounts and crystal grain boundary area which become the causes of dispersion of sound quality are closely related to residual resistance ratio RRR, and the chemical impurities becomes fewer and physical defects also become fewer the greater the RRR is. So, as material characteristics which affect superiority or inferiority of sound quality the RRR is used, and by selecting material on the basis of RRR desired sound quality can be obtained. Also, if this oxygen content exceeds 20ppm the sound quality lowers remarkably. Hereby, a cable for audio which is excellent in sound quality such as transparency of a sound, expansion of a sound field, and stability of an image normal position, and which can get this excellent sound quality stably can be obtained.

4. 发明专利

JPH0287414A ELECTRIC WIRE FOR AUDIO APPLIANCE 失效
公开(公告)号：JPH0287414A
公开(公告)日：1990-03-28
申请号：JP23850988
申请日：1988-09-22
申请人： FUJIKURA LTD
发明人： KUROSAKA AKITO , TAKAYAMA TERUYUKI , TOMINAGA HARUO , TOMOMATSU KAZUHIKO , OSANAI YUTAKA
IPC分类号： H01B1/02 , H01B7/00
摘要： PURPOSE:To enhance the sound quality such as the sense of clearness and the expansiveness of sound field by constituting a wire for audio appliance from a conductor obtained from Cu base material, which has a specific oxygen content and a perfect softening temp. and is subjected to perfect softening treatment. CONSTITUTION:A Cu base material with oxygen content below 20ppm and with a perfect softening temp. below 150 deg.C is subjected to perfect softening treatment to provide a conductor, which is used for a wire for audio appliance. When the oxygen content exceeds 20ppm, the oxygen in the Cu base material reacts with impurities in the Cu base material to produce oxides (Fe2O3, SiO2, etc.), and also reacts with Cu in the base material to produce copper oxide, and it becomes easier for these oxides to educt at crystal boundaries. This increases difference between the electric resistance of Cu monocrystals and the electric resistance at the crystal boundaries, which sinks the sound quality very much. This lowering of the perfect softening temp. can enlarge recrystallized grains easily by means of annealing, and the grain boundary areas can be decreased. A plurality of such conductors are twined together into a strand, which is covered with insulation to accomplish a wire for audio appliance.

5. 发明专利

JPH01305813A PRODUCTION OF OXIDE-BASED SUPERCONDUCTOR 失效
公开(公告)号：JPH01305813A
公开(公告)日：1989-12-11
申请号：JP13478888
申请日：1988-06-01
申请人： FUJIKURA LTD , CHUBU ELECTRIC POWER , CHUGOKU ELECTRIC POWER , KYUSHU ELECTRIC POWER
发明人： YAMAGUCHI TAICHI , AOKI SHINYA , KONO TSUKASA , OSANAI YUTAKA , SHINADA TOMOAKI , SUGIMOTO OSAMU , WATANABE KIICHIRO
IPC分类号： C01G3/00 , C01G1/00 , C01G15/00 , C01G29/00 , C01G30/00 , C23C16/40 , C23C16/44 , C23C16/448 , C23C16/455 , H01B12/06 , H01B13/00 , H01L39/24
摘要： PURPOSE:To easily control the molar ratio of elements irrespective of the vapor pressure of the elements by introducing the org. compd. contg. an alkaline-earth metallic element into a CVD device separately from the compd. contg. a rare- earth element and copper. CONSTITUTION:An oxide superconductor shown by A-B-Cu-O (A is one or >=2 kinds among group IIIa elements such as Y, Sc, La, Yb, Er, Ho, and Dy, group Vb elements such as Bi and Sb, and group IIIb elements such as Tl and In, and B is one or >=2 kinds among group IIa elements such as Sr, Ca, and Ba) is produced. In this case, the soln. of an org. compd. contg. the B elements (a metallic salt of hexafluoroacetone is preferable) in an org. solvent in a vessel 16 is vaporized or atomized by the gas introduced from a plasma producing gas source 17 in a vaporization chamber 11, and introduced into the plasma producing chamber of a chemical vapor deposition device 3. Meanwhile, a soln. of an org. compd. contg. A and Cu such as an acetyl acetone complex is introduced into a device 2 from the source 7, and a superconducting layer is formed on a substrate 1 by chemical vapor deposition.

6. 发明专利

JPH01261204A PRODUCTION OF OXIDE BASED SUPERCONDUCTOR 失效
公开(公告)号：JPH01261204A
公开(公告)日：1989-10-18
申请号：JP8865688
申请日：1988-04-11
申请人： FUJIKURA LTD , CHUBU ELECTRIC POWER , CHUGOKU ELECTRIC POWER , KYUSHU ELECTRIC POWER
发明人： NAKAGAWA MIKIO , KONO TSUKASA , OSANAI YUTAKA , SHINADA TOMOAKI , SUGIMOTO OSAMU , WATANABE KIICHIRO
IPC分类号： H01L39/24 , C01B13/14 , C01G1/00 , C01G3/00 , C01G29/00 , C01G30/00 , C23C14/08 , C23C14/34 , C30B29/22 , H01B12/06 , H01B13/00
摘要： PURPOSE:To increase film-forming rate and improve superconductive characteristics, by using a metallic or alloy target and irradiating oxygen using an ion beam assist, etc., simultaneously with sputtering in producing an oxide superconductor thin film by a sputtering method. CONSTITUTION:An oxide superconductor expressed by the general formula A-B-C-D (A is one or two or more of Y, Sc, La, Ho, Er, etc., and Bi, Sb, As, etc.; B is one or two or more of Sr, Ba, Ca, etc.; C is Cu or two or more including the Cu in Cu, Ag, Au, etc., and Nb; D is O or two or more including the O in O, S, Se, etc., and F) is formed by the following method. That is metallic or alloy targets containing at least one element of (A)-(D) are prepared and one or more targets (e.g., 41-43) are used so that at least the elements (A), (B) and (C) may be present to carry out sputtering by a high-frequency sputtering device 1. The element (D) is simultaneously accelerated and irradiated by a method, such as ion beam assist (ion source 2).

7. 发明专利

JPH01259582A MANUFACTURE OF OXIDE SUPERCONDUCTIVE THIN FILM 失效
公开(公告)号：JPH01259582A
公开(公告)日：1989-10-17
申请号：JP8865588
申请日：1988-04-11
申请人： FUJIKURA LTD , CHUBU ELECTRIC POWER , CHUGOKU ELECTRIC POWER , KYUSHU ELECTRIC POWER
发明人： NAKAGAWA MIKIO , KONO TSUKASA , OSANAI YUTAKA , SHINADA TOMOAKI , SUGIMOTO OSAMU , WATANABE KIICHIRO
IPC分类号： H01L39/24 , C01B13/14 , C01G1/00 , C23C14/08 , C23C14/22 , H01B12/06 , H01B13/00
摘要： PURPOSE:To obtain an oxide superconductive thin film which exhibits an excellent superconductivity by forming an oxide layer by means of an accelerated irradiation of oxygen onto the surface of a metal-formed substrate and then providing the oxide superconductive thin film on the oxide layer. CONSTITUTION:Metal materials such as silver, gold, platinum, a stainless steel, aluminum, and copper and alloy materials of these metals are used to form a substrate A. Oxygen made in ionic, atomic, or molecular form by an ion beam device 1 is irradiated onto an object (substrate A) at an accelerated rate to thereby form an oxide layer B in reaction with the metal surface of the substrate A. An oxide superconductive thin film C is then formed on the oxide layer B by a method including a vacuum evaporation method or sputtering method adapted to the properties of the oxide superconductor to be formed. Accordingly, a part of the surface of the substrate A is subjected to a sputter etching process by the accelerated oxygen ion, etc., thereby not only improving both deposition strength and crystal orientation of the oxide-based superconductive thin film C but also allowing a film with an excellent superconductivity to be obtained.

8. 发明专利

JPH01258317A MANUFACTURE OF OXIDE SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH01258317A
公开(公告)日：1989-10-16
申请号：JP8481688
申请日：1988-04-06
申请人： FUJIKURA LTD
发明人： MAEJIMA SEIJU , SARUWATARI KOICHI , OSANAI YUTAKA , KONO TSUKASA , IKENO YOSHIMITSU , SADAKATA NOBUYUKI , NAKAGAWA MIKIO , SUGIMOTO MASARU
IPC分类号： B21F19/00 , H01B12/00 , H01B12/04 , H01B13/00
摘要： PURPOSE:To obtain an oxide superconductive wire having high sintering concentration and excellent critical current concentration by roughening one side face of a metal tape and this roughened face is given oxidizing treatment to be made a coated substance while an interpolation substance is coated by the coated substance for being made a composite substance. CONSTITUTION:A metal tape 8 is prepared and one side face of this tape 8 is roughened. Next, the roughened face is given oxidation treatment for forming an oxide layer 9 to be made a composite substance 10. Next, an interpolation substance 3 is coated with the coated substance so that the face given oxidation treatment of the coated substance 10 may get inside followed by connecting the connection part 11 of the coated substance to become a composite substance 12. Accordingly, a coated layer 2 of superconductive precurser powder or superconductor powder is pressed by the coated substance 10 so as to be fully concentrated. Further, after forming the oxide layer 9 on the roughened face of the metal tape 8, an oxide layer 21 is again formed on this oxide layer 9 in order to prevent deficiency of oxygen at the time of firing.

9. 发明专利

JPH01253124A MANUFACTURE OF OXIDE SUPERCONDUCTING MATERIAL 失效
公开(公告)号：JPH01253124A
公开(公告)日：1989-10-09
申请号：JP8045088
申请日：1988-04-01
申请人： FUJIKURA LTD
发明人： SARUWATARI KOICHI , MAEJIMA SEIJU , OSANAI YUTAKA , KONO TSUKASA , IKENO YOSHIMITSU , NAKAGAWA MIKIO
IPC分类号： C04B35/00 , B28B1/00 , C01G1/00 , C04B35/45 , C25D13/02 , H01B12/04 , H01B13/00
摘要： PURPOSE:To prevent the occurrence of defects such as cracks on a superconductor layer by electrodepositing the oxide superconducting powder on the surface of a substrate by electrophoresis electrodeposition to form a delicate electrodeposition layer then heat-treating it. CONSTITUTION:This is an oxide superconducting material provided with an A-B-Cu-O oxide superconductor, where A indicates one or more kinds of group IIIa elements in the periodic table such as Y, Sc, La, Yb, Er, Eu, Ho, Dy, and B indicates one or more kinds of group IIa elements in the periodic table such as Be, Mg, Ca, Sr, Bd. A substrate 1 is immersed in an electrodeposition liquid 3 dispersed with the powder of this oxide superconductor or the precursor powder of the oxide superconductor in formamide, the voltage is applied across the substrate 1 serving as a negative electrode and a positive electrode 6 made of a platinum plate or the like, the superconducting powder dispersed in the electrodeposition liquid 3 is electrified to plus, a delicate electrodeposition layer 4 is formed on the surface of the substrate 1, and a superconducting raw material 5 is obtained. The raw material 5 is raised and dried with hot air, the formamide on the surface is removed, it is then heat-treated to accelerate the transformation of the crystal structure of the superconductor from the tetragonal system to the rhombic system.

10. 发明专利

JPH01247600A PRODUCTION OF OXIDE SUPERCONDUCTING MATERIAL 失效
公开(公告)号：JPH01247600A
公开(公告)日：1989-10-03
申请号：JP7776988
申请日：1988-03-30
申请人： FUJIKURA LTD
发明人： SARUWATARI KOICHI , MAEJIMA SEIJU , OSANAI YUTAKA , KONO TSUKASA , IKENO YOSHIMITSU , NAKAGAWA MIKIO
IPC分类号： H01L39/24 , C01G1/00 , C01G3/00 , C04B41/87 , C25D13/02 , H01B12/06 , H01B13/00
摘要： PURPOSE:To develop an oxide-based superconducting material having a high critical temp. by using a metal or a ceramic base material having a metal layer on its surface as a cathode, applying a current between the cathode and an anode in an electrodeposition soln. wherein oxide superconducting powder having a specified composition is dispersed to deposit the superconducting powder, and then heat-treating the product. CONSTITUTION:An electrodeposition soln. 3 obtained by dispersing 1-500g/l of the powder of an A-B-Cu-O based oxide superconductor (A is >=1 kind among group IIIa elements of the periodic table and B is >=1 kind among group IIa elements) in a liq. mixture of methyl ethyl ketone and acetone is charged in a vessel 2. A high-melting- point metal having excellent oxidation resistance or a ceramic base material 1 electroless-plated with Ag, Ni, etc., is used as a cathode, and a current is applied between the cathode and the anode 6 of Pt, etc., in the soln. to deposit a superconducting power layer on the surface of the base material by electrophoresis. The product is then heated to 800-1000 deg.C in the atmosphere to sinter the powder layer 4, and a superconducting material A having a superconductor layer 7 having a high critical temp. is produced. A protective layer 8 of metal or synthetic resin is provided, as required, to prevent the aging deterioration of superconductivity.

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