WO2011061909A1 - 超電導化合物用基板及びその製造方法 - Google Patents
超電導化合物用基板及びその製造方法 Download PDFInfo
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- WO2011061909A1 WO2011061909A1 PCT/JP2010/006649 JP2010006649W WO2011061909A1 WO 2011061909 A1 WO2011061909 A1 WO 2011061909A1 JP 2010006649 W JP2010006649 W JP 2010006649W WO 2011061909 A1 WO2011061909 A1 WO 2011061909A1
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- Prior art keywords
- copper
- substrate
- metal plate
- superconducting compound
- copper foil
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- 239000000758 substrate Substances 0.000 title claims abstract description 62
- 150000001875 compounds Chemical class 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 141
- 239000010949 copper Substances 0.000 claims abstract description 90
- 229910052802 copper Inorganic materials 0.000 claims abstract description 89
- 239000002184 metal Substances 0.000 claims abstract description 73
- 229910052751 metal Inorganic materials 0.000 claims abstract description 73
- 239000011889 copper foil Substances 0.000 claims abstract description 48
- 238000005096 rolling process Methods 0.000 claims abstract description 22
- 239000010410 layer Substances 0.000 claims description 51
- 238000010438 heat treatment Methods 0.000 claims description 30
- 239000011241 protective layer Substances 0.000 claims description 19
- 238000000992 sputter etching Methods 0.000 claims description 16
- 239000010935 stainless steel Substances 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 230000005291 magnetic effect Effects 0.000 claims description 8
- 239000002156 adsorbate Substances 0.000 claims description 4
- 238000005304 joining Methods 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 18
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 37
- 239000013078 crystal Substances 0.000 description 22
- 229910052759 nickel Inorganic materials 0.000 description 18
- 238000009792 diffusion process Methods 0.000 description 16
- 238000007747 plating Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 6
- 230000004913 activation Effects 0.000 description 4
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- 238000000576 coating method Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
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- 238000005097 cold rolling Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000001953 recrystallisation Methods 0.000 description 3
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000003917 TEM image Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
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- 238000003466 welding Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005290 antiferromagnetic effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
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- 238000000921 elemental analysis Methods 0.000 description 1
- 238000000724 energy-dispersive X-ray spectrum Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B12/00—Superconductive or hyperconductive conductors, cables, or transmission lines
- H01B12/02—Superconductive or hyperconductive conductors, cables, or transmission lines characterised by their form
- H01B12/06—Films or wires on bases or cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
- B32B15/015—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium the said other metal being copper or nickel or an alloy thereof
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1255—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest with diffusion of elements, e.g. decarburising, nitriding
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/007—Ferrous alloys, e.g. steel alloys containing silver
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/01—Manufacture or treatment
- H10N60/0268—Manufacture or treatment of devices comprising copper oxide
- H10N60/0296—Processes for depositing or forming copper oxide superconductor layers
- H10N60/0576—Processes for depositing or forming copper oxide superconductor layers characterised by the substrate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12903—Cu-base component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12903—Cu-base component
- Y10T428/12917—Next to Fe-base component
- Y10T428/12924—Fe-base has 0.01-1.7% carbon [i.e., steel]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12951—Fe-base component
- Y10T428/12972—Containing 0.01-1.7% carbon [i.e., steel]
- Y10T428/12979—Containing more than 10% nonferrous elements [e.g., high alloy, stainless]
Definitions
- the present invention relates to a substrate for a superconducting compound used as a substrate for a superconducting compound and a method for producing the same.
- An excellent substrate for a high-temperature oxide superconducting compound is provided with an intermediate layer (CeO 2 or zirconia-added yttrium oxide (YSZ)) having a high crystal orientation on a metal substrate, and further a superconducting compound layer (RE123 film: RE: Y, Gd, Ho, etc.) are formed.
- oxide film deposition methods include ion-assisted beam deposition (IBAD) and RABITS, in which an oxide is deposited on a previously crystallized metal substrate. ing.
- the substrate for oxide superconducting compound manufactured by RABITS method is advantageous, but in order to improve the superconducting characteristics by this manufacturing method, a metal substrate is highly advanced. It is important to keep the crystal orientation.
- a substrate is disclosed in which copper is laminated on a stainless steel substrate, copper is highly crystallized, and a nickel intermediate layer is laminated thereon (see, for example, Patent Document 1).
- Patent Document 1 has a problem that the orientation of copper laminated on the stainless steel substrate is not sufficient, and there is a possibility that scratches or grooves may be generated on the surface.
- Patent Document 2 employs a means of laminating copper on a stainless steel substrate by cold rolling after crystal orientation, and rolling the crystal oriented copper, In some cases, the copper orientation is lowered or the copper surface is scratched or grooved. For this reason, there is a problem that the orientation of the nickel layer, the superconducting layer, and the like laminated thereon is lowered, and the characteristics of the superconductor may be lowered. Further, in the manufacturing methods described in Patent Document 1 and Patent Document 2, the adhesion strength between the substrate and copper laminated thereon is weak, and there is a problem in the reliability of products using these metal substrates.
- the present invention solves such problems and provides a substrate for a superconducting compound capable of realizing excellent adhesion strength required for a substrate simultaneously with high orientation of copper and a method for producing the same.
- the substrate for a superconducting compound of the present invention is A non-magnetic metal plate, A copper layer provided thereon, A substrate for a superconducting compound having a protective layer provided thereon, The copper diffuses in the nonmagnetic metal plate by 10 nm or more. It is characterized by that.
- the substrate for a superconducting compound of the present invention is characterized in that, in (1), the metal plate is a nonmagnetic stainless steel plate.
- the method for producing a substrate for a superconducting compound of the present invention comprises: A step of removing the adsorbate on the surface by sputter etching the surface of the copper foil processed at a rolling reduction of 90% or more; Sputter etching the surface of a non-magnetic metal plate; Forming a laminate by pressing and joining the copper foil and the metal plate with a rolling roll; A heat treatment step of heating the laminated body to crystallize the copper and thermally diffusing the copper to the metal plate by 10 nm or more; And a step of laminating a protective layer on the copper surface of the laminate.
- the method for producing a substrate for a superconducting compound of the present invention is characterized in that, in (3), the metal plate is a non-magnetic stainless steel plate.
- the adhesion between the metal plate and copper laminated thereon is improved.
- the method for manufacturing a substrate for a superconducting compound according to claim 3 since copper is laminated on a metal plate and then heat-treated to perform crystal orientation of copper, copper is highly oriented as compared with the prior art. It is possible to prevent generation of scratches and grooves on the surface.
- copper is sputter-etched at a temperature lower than the recrystallization start temperature of copper, so that copper can be laminated on the substrate with less change in the copper reduction state than in the prior art, and the reduction can be achieved by subsequent heat treatment. When orienting the deposited copper, the copper can be highly orientated compared to the prior art.
- FIG. 1 shows a schematic view of a surface activated bonding apparatus used in the present invention. It is a schematic sectional drawing which shows the structure of the board
- substrate for superconducting compounds of Embodiment 1 of this invention is heat-processed at 600 degreeC for 1 hour is shown.
- the substrate includes a nonmagnetic metal plate, a copper layer provided on the nonmagnetic metal plate, and a protective layer provided on the upper layer.
- the copper layer is diffused by 10 nm or more.
- Such a substrate for a superconducting compound includes a step of sputter etching the surface of a copper foil processed at a rolling reduction of 90% or more to remove adsorbed material on the surface, and a step of sputter etching the surface of a nonmagnetic metal plate.
- the heat treatment step for thermal diffusion as described above and the step of laminating a protective layer on the copper surface of the laminate are manufactured.
- FIG. 2 is a schematic sectional view showing the configuration of the superconducting compound substrate 5 according to the first embodiment of the present invention.
- the superconducting compound substrate 5 according to the first embodiment is provided on the nonmagnetic metal plate T1 and the copper layer T2 laminated on the nonmagnetic metal plate T1, and the copper layer T2.
- the copper layer T2 is diffused by 10 nm or more in the nonmagnetic metal plate T1. Adhesion strength between the nonmagnetic metal plate T1 and the copper layer T2 is ensured by diffusion of 10 nm or more.
- the nonmagnetic metal plate T1 is used for the role of a copper layer reinforcing plate, the nonmagnetic metal plate T1 is nonmagnetic (antiferromagnetic or paramagnetic) under 77K where a superconducting compound substrate is used. And a material having higher strength than the copper foil used as the copper layer T2.
- the nonmagnetic metal plate T1 is preferably in a softened state, so-called annealed material (O material).
- the metal plate T1 is preferably in a softened state in order to secure the contact area of the joining interface under a low pressure as much as possible and reduce the warpage after rolling.
- the nonmagnetic metal plate T1 include, for example, an annealed material of a stainless steel plate such as SUS316L.
- the thickness of the stainless steel plate is preferably 0.05 mm or more and 0.2 mm or less. The reason why the thickness is 0.05 mm or more is to ensure the strength of the nonmagnetic metal plate T1, and the reason why the thickness is 0.2 mm or less is to ensure workability when processing the superconducting material.
- the copper foil used as the copper layer T2 is preferably a full hard material made of copper or a copper alloy that is cold-rolled at a rolling reduction of 90% or more.
- the full hard material in the present specification refers to a material having cold rolling at a strong reduction rate as the final step.
- the reason why the rolling reduction is 90% or more is that the copper foil having a rolling reduction of less than 90% may not be oriented in the heat treatment performed later.
- the thickness of the copper foil T2 is preferably 7 ⁇ m or more and 50 ⁇ m or less from the viewpoint of strength and workability.
- the composition of the copper foil is preferably that in which additive elements such as Ag, Sn, Zn, Zr, O, and N are added in total to 100 ppm or more and 1% or less in copper.
- additive elements such as Ag, Sn, Zn, Zr, O, and N are added in total to 100 ppm or more and 1% or less in copper.
- the total addition amount of these additive elements exceeds 1%, oxides and the like are formed in the copper foil, and foreign matter is formed on the surface of the copper foil, so that the adhesion to the nonmagnetic metal plate is reduced. This is not preferable because the epitaxial growth of the protective layer is hindered.
- the addition of Ag is particularly effective for improving the crystal orientation, and the addition amount of Ag is preferably set to 100 ppm to 300 ppm.
- an oxide intermediate layer such as CeO 2 or YSZ is formed in a high-temperature oxidizing atmosphere at 600 ° C. or higher in a later step. For this reason, coating the oxide intermediate layer directly on the surface of the copper layer T2 may make it difficult to ensure uniform adhesion due to copper surface oxidation. Therefore, it is desirable to coat a protective layer on the copper foil surface after the heat treatment.
- the protective layer is not particularly limited as long as the protective layer is epitaxially grown on the copper foil and the oxide intermediate layer is epitaxially grown on the protective layer, but the nickel layer is particularly preferable.
- the method for coating the nickel layer may be any method as long as it is an epitaxial growth method so as to inherit the high biaxial crystal orientation of the copper foil.
- the electrolytic nickel plating method is preferable.
- the electrolytic nickel plating bath any bath may be used as long as it is matte plating such as a normal watt bath, chloride bath or sulfamic acid bath, and semi-gloss plating.
- the nickel plating layer should be as thin as possible. However, when forming the oxide intermediate layer in the subsequent treatment, it is necessary to prevent copper metal diffusion, and the thickness is set to 1 ⁇ m to 3 ⁇ m. It is preferable.
- the nickel layer includes a nickel alloy layer.
- a nonmagnetic metal plate L1 and a copper foil L2 are prepared as long coils having a width of 150 mm to 600 mm, and are respectively installed in the recoiler parts S1 and S2 of the surface activated bonding apparatus D1.
- the non-magnetic metal plate L1 and the copper foil L2 conveyed from the recoiler units S1 and S2 are continuously conveyed to the surface activation treatment step, where the two surfaces to be joined are pre-activated and then cooled. Weld with pressure.
- a nonmagnetic metal plate L1 having a joint surface and a copper foil L2 are each grounded and grounded as one electrode A (S3), and between the other electrode B (S4) that is insulated and supported.
- a glow discharge is generated by applying an alternating current of ⁇ 50 MHz, and the area of the electrode exposed in the plasma generated by the glow discharge is sputter-etched under 1/3 or less of the area of the electrode B.
- the inert gas argon, neon, xenon, krypton, or a mixed soot gas containing at least one of these can be used.
- the surface adsorbing layer may be removed by sputtering the surface where the nonmagnetic metal plate L1 and the copper foil L2 are joined with an inert gas, and the surface oxide film may be further removed.
- the surfaces to be joined are activated by.
- the electrode A (S3) takes the form of a cooling roll to prevent the temperature of each conveying material from rising.
- the adsorbate on the bonding surface is completely removed, but the surface oxide layer need not be completely removed. Even if an oxide layer remains on the entire surface, it is possible to ensure the bondability between the metal plate and the copper foil by increasing the rolling reduction in the bonding process and exposing the base material by friction on the bonding surface. is there.
- the metal structure of the copper foil is held at 100 ° C. or lower and the rolled texture is maintained.
- the copper foil temperature rises due to contact with the copper foil during pressure welding.
- recrystallization of the copper foil occurs simultaneously with rolling, and the biaxial crystal orientation may be deteriorated.
- it is kept at room temperature to 100 ° C.
- the degree of vacuum at this time is preferably higher in order to prevent re-adsorbed substances on the surface, but it may be 10 ⁇ 5 Pa or more and 10 ⁇ 2 Pa or less.
- the rolling roll bonding is performed in a non-oxidizing atmosphere, for example, an inert gas atmosphere such as Ar. It is also preferable.
- Pressing with a rolling roll is preferably performed in order to secure a close contact area at the bonding interface and to partially peel off the surface oxide film layer by friction occurring at the bonding interface during reduction to expose the substrate, and to apply 300 MPa or more.
- the adhesion strength of the bond can be 0.1 N / cm or more at 180 ° peel strength.
- the metal plate is a strength reinforcing material
- the copper foil to be joined is full hard, and since both materials are hard, pressurization at 600 MPa to 1.5 GPa is preferable.
- the pressurization may be applied more than this, and it has been confirmed that the crystal orientation does not deteriorate after the subsequent heat treatment up to a reduction rate of 30%. However, when further processing is applied, cracks are generated on the surface of the copper foil, and the crystal orientation of the copper foil after rolling and heat treatment is deteriorated.
- the adhesion strength due to bonding is low because the adhesion area and the substrate exposure at the bonding interface are small.
- another step such as a polishing step or a continuous heat treatment step can be passed through without problems.
- the adhesion strength is 0.1 N / cm or more at 180 ° peel, there is no problem such as peeling if it is handled with care, such as a polishing process or a heat treatment plate passing process. From the viewpoint, it is desirable to ensure a strength of 3 N / cm or more at 180 ° peel.
- the laminate After the joining process of the copper foil and the nonmagnetic metal plate by a rolling roll, the laminate is subjected to a heat treatment at a temperature of 150 ° C. or more in a non-oxidizing atmosphere so that the copper foil is biaxially crystallized. If it is less than 150 degreeC, the biaxial crystal orientation of copper foil cannot be ensured. Furthermore, in order to improve the adhesion strength, it is necessary to perform the treatment at a temperature higher than the temperature at which the thermal diffusion of the elements of the nonmagnetic metal plate occurs. For example, in SUS316L, when held at 400 ° C. or higher, metal diffusion at the bonding interface, particularly movement of copper atoms to the metal plate occurs, and adhesion strength is improved.
- the diffusion to the said metal plate of the said copper atom is aimed at by adjusting temperature and time.
- the heat treatment temperature is 400 ° C.
- the heat treatment time may be maintained in a batch annealing furnace for 1 to 10 hours.
- the treatment is performed at 800 ° C. or more and 950 ° C. or less for 1 minute to 5 minutes, and the copper diffusion distance is 60 nm or more.
- FIG. 3 is a schematic cross-sectional view showing the configuration of the superconducting compound substrate 10 according to the second embodiment of the present invention.
- a copper layer T2 is provided by surface activation bonding on both surfaces of a nonmagnetic metal plate T1 to be a substrate, and after heat treatment, nickel is formed on the copper layers T2 on both surfaces of the laminate.
- a protective layer T3 made of plating is provided.
- the copper layer T2 is diffused by 10 nm or more in the nonmagnetic metal plate T1 in contact with the copper layer T2.
- Example 1 A high-pressure lower copper foil having a width of 200 mm, a thickness of 18 ⁇ m, and Ag added to 200 ppm was joined to SUS316L (annealed material) having a thickness of 100 ⁇ m using a surface activated bonding apparatus as shown in FIG. 1 to form a copper / SUS316L laminate.
- the plasma output was 200 W
- the sputter irradiation time on the bonding surface was 20 seconds
- the copper foil and the adsorbed material layer of the metal plate were completely removed.
- the pressurization with the rolling roll was 600 MPa.
- the laminated body was heat-treated at 500 ° C. for 1 hour.
- measurement of copper diffusion distance, measurement of peel strength, and measurement of (200) plane crystal orientation altitude ( ⁇ of Cu) on the copper surface were performed.
- nickel plating with a thickness of 1 ⁇ m was applied as a protective layer on the copper surface of the laminate after the heat treatment, the degree of crystal orientation ( ⁇ of Ni) of the nickel layer was measured.
- Nickel plating was performed using a general Watt bath at a current density of 4 A / dm 2 , a bath temperature of 60 ° C., and a pH of 3.
- the copper diffusion distance was defined by elemental analysis of the SUS316L side from the copper / SUS316L laminated interface with EDS, and the distance to the position where the copper concentration was detected at 2 at% or more was defined as the copper diffusion distance.
- Example 2-6 Except for the heat treatment conditions listed in Table 1, it was the same as Example 1-1.
- Table 1 shows the heat treatment conditions and the measurement results of the above experimental examples.
- FIG. 4 shows the relationship between the copper diffusion distance from the copper / SUS316L interface in the SUS316L direction and the 180 ° peel strength.
- FIG. 5 shows the copper / SUS316L when heat treatment is performed at 600 ° C. for 1 hour in Experimental Example 2. The TEM image of an interface is shown.
- FIG. 6 is a schematic cross-sectional view showing a superconducting compound laminate of Reference Embodiment 1 in which a superconducting compound is laminated on the superconducting compound substrate of the present invention.
- the superconducting compound laminate 15 of the reference form 1 is further provided with an intermediate layer such as CeO 2 or zirconia-added yttrium oxide (YSZ) on the protective layer T3 of the superconducting compound substrate 10 of the first embodiment (see FIG. 2).
- a superconducting compound layer T5 such as T4 or RE123 film, and a surface protective film T6 are formed.
- the superconducting compound laminate 15 of Reference Form 1 has a strong adhesion strength between the nonmagnetic metal plate T1 and the copper layer T2 because the copper layer T2 is diffused by 10 nm or more in the nonmagnetic metal plate T1, and an excellent superconducting compound laminate. It is a plate 15.
- FIG. 7 is a schematic cross-sectional view showing a superconducting compound laminate of Reference Embodiment 2 in which a superconducting compound is laminated on the superconducting compound substrate of the present invention.
- the superconducting compound laminated plate 20 of the reference form 2 is further formed on the protective layer T3 on both surfaces of the superconducting compound substrate 10 of the second embodiment (see FIG. 3) and further intermediate such as CeO 2 or zirconia-added yttrium oxide (YSZ).
- a superconducting compound layer T5 such as a layer T4 and an RE123 film, and a surface protective film T6 are formed.
- the superconducting compound laminate 20 of Reference Form 2 has excellent adhesion strength between the nonmagnetic metal plate T1 and the copper layer T2, since the copper layers T2 on both surfaces of the nonmagnetic metal plate T1 are each diffused by 10 nm or more.
- the superconducting compound laminate 20 is formed.
- the heat treatment is performed to perform the copper crystal orientation and the diffusion treatment, so that the adhesion strength required for the substrate for the superconducting compound is realized simultaneously with the copper crystal orientation. And the industrial applicability is extremely high.
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Abstract
Description
これらの酸化物膜の成膜方法には、従来、イオン・アシスト・ビーム成膜法(IBAD法)や、予め結晶配向させた金属基板上に酸化物を成膜していくRABITS法が知られている。
また、特許文献2に記載の製造方法は、銅を結晶配向させてから冷間圧延によりステンレス基板に積層する手段を採用しており、結晶配向した銅を圧延することになるので、この圧延により銅の配向の低下や銅の表面に傷や溝ができる場合が有る。このため、その上に積層するニッケル層、超電導層等の配向が低下して しまい、超電導体の特性が低下するおそれがあるという問題がある。
また、上記特許文献1や特許文献2に記載の製造方法では、基板とその上に積層された銅との密着強度が弱く、これらの金属基板を用いた製品の信頼性に問題があった。
非磁性の金属板と、
その上層に設けられた銅層と、
その上層に設けられた保護層とを有する、超電導化合物用基板であって、
前記非磁性金属板に前記銅が10nm以上拡散している、
ことを特徴とする。
(2)本発明の超電導化合物用基板は、前記(1)において、前記金属板が非磁性ステンレス鋼板であることを特徴とする。
(3)本発明の超電導化合物用基板の製造方法は、
圧下率90%以上で加工された銅箔の表面をスパッタエッチングして表面の吸着物を除去する工程と、
非磁性の金属板の表面をスパッタエッチングする工程と、
前記銅箔と前記金属板とを圧延ロールにより加圧して接合し積層体を形成する工程と、
前記積層体を加熱して前記銅を結晶配向させるとともに、前記銅を前記金属板に10nm以上熱拡散させる熱処理工程と、
前記積層体の銅表面上に保護層を積層する工程と、を有することを特徴とする。
(4)本発明の超電導化合物用基板の製造方法は、前記(3)において、前記金属板が非磁性ステンレス鋼板であることを特徴とする。
また、銅の再結晶開始温度未満の温度に保持して銅をスパッタエッチングすることで、従来技術よりも銅の圧下状態の変化を少なくして銅を基板に積層でき、その後の加熱処理により圧下された銅を配向させるときに従来技術に比べて銅を高度に配向させることができる。
このような超電導化合物用基板は、圧下率90%以上で加工された銅箔の表面をスパッタエッチングして表面の吸着物を除去する工程と、非磁性の金属板の表 面をスパッタエッチングする工程と、前記銅箔と前記金属板とを圧延ロールにより加圧して接合し積層体を形成する工程と、前記積層体を加熱して前記銅を結晶 配向させるとともに、前記銅を前記金属板に10nm以上熱拡散させる熱処理工程と、前記積層体の銅表面上に保護層を積層する工程と、を有して製造される。
図2は、本発明の実施の形態1の超電導化合物用基板5の構成を示す概略断面図である。
図2に示すように、実施の形態1の超電導化合物用基板5は、基板となる非磁性金属板T1、非磁性金属板T1の上に積層された銅層T2、銅層T2の上に設けられた保護層T3からなり、前記非磁性金属板T1に前記銅層T2が10nm以上拡散している。
10nm以上の拡散により非磁性金属板T1と銅層T2との密着強度が確保される。
非磁性金属板T1は、銅層の補強板の役割のために用いられるため、非磁性金属板T1としては、超電導化合物用基板が使用される77K下で非磁性(反強磁性体または常磁性体)であり、かつ、銅層T2として用いられる銅箔より高強度のものが使用される。
また、非磁性金属板T1は、軟化した状態、いわゆる焼鈍材(O材)が好ましい。この理由は、接合相手である銅箔が高圧下率で冷間圧延を施し硬化させたも のであるため、金属板の硬度が高すぎると接触面積を確保するのにより高い圧下率が必要となり、圧延後の反りが大きくなる場合がある。したがって、接合界面 の接触面積を極力低圧下で確保させ、圧延後の反りを低減させるため、金属板T1は軟化した状態が好ましい。
非磁性金属板T1の具体例として、例えばSUS316Lなどのステンレス鋼板の焼鈍材などが挙げられ、その厚みは前記ステンレス鋼板であれば 0.05mm以上0.2mm以下のものとすることが好ましい。0.05mm以上とする理由は非磁性金属板T1の強度の確保であり、0.2mm以下とする理 由は超電導材を加工するときの加工性確保のためである。
銅層T2として用いる銅箔は、圧下率90%以上で冷間圧延された銅または銅合金からなる、フルハード材を用いることが好ましい。本明細書におけるフルハード材とは、強圧下率での冷間圧延を最終工程とするものを言う。
圧下率90%以上とする理由は、圧下率90%未満の銅箔は、後に行う熱処理において銅が配向しないおそれがあるからである。
また、銅箔T2の厚みは、強度面や加工性の点から、厚み7μm以上50μm以下のものが好ましい。
しかしながら、これらの添加元素のトータル添加量が1%を超えると、銅箔中に酸化物などが形成され、銅箔表面に異物ができることにより、非磁性の金属板との密着性が低下したり、保護層のエピタキシャル成長が阻害されたりするため、好ましくない。
上記添加元素の中で、結晶配向性を向上させることについてはAgの添加が特に効果があり、Ag添加量を100ppm~300ppmとすることが好ましい。
本実施形態の超電導化合物用基板上には、後の工程にてCeO2やYSZなどの酸化物中間層が600℃以上の高温酸化雰囲気中で成 膜される。そのため、直接銅層T2表面上に上記酸化物中間層をコーティングすることは、銅の表面酸化が起因して密着性を均一に確保することが困難となる場 合がある。そのため、上記熱処理後に銅箔表面上に保護層をコーティングすることが望ましい。前記保護層は、保護層が銅箔上にエピタキシャル成長し、かつ、 保護層の上に酸化物中間層がエピタキシャル成長するようなものであれば、その組成は問わないが、特にニッケル層が好ましい。
電解ニッケルめっき浴は、通常のワット浴、塩化物浴やスルファミン酸浴などの無光沢めっきおよび半光沢めっきであれば何れの浴を用いて実施してもよい。
図1に示すように、非磁性の金属板L1および銅箔L2を、幅150mm~600mmの長尺コイルとして用意し、表面活性化接合装置D1のリコイラー部 S1,S2のそれぞれに設置する。リコイラー部S1,S2から搬送された非磁性の金属板L1および銅箔L2は、連続的に表面活性化処理工程へ搬送され、そ こで接合する2つの面を予め活性化処理した後、冷間圧接する。
このため、非磁性の金属板のスパッタエッチング工程においても、金属板の温度を150℃未満に保つことが望ましい。好ましくは常温~100℃に保つのがよい。
このように非磁性の金属板および銅箔の表面を活性化処理した後、両者を真空中で圧延ロールにて接合する。この時の真空度は、表面への再吸着物を防止するため高い方が好ましいが、10-5Pa以上10-2Pa以下であればよい。
スパッタエッチングにより吸着物を完全に除去し、300MPa以上の加圧にて圧接を行うことにより、接合の密着強度は180°ピール強度で0.1N/cm以上を得ることができる。
特に、金属板は強度補強材であり、接合する銅箔もフルハードとなっており、両材料とも硬いため600MPa以上1.5GPa以下での加圧が好ましい。
加圧はこれ以上かけてもよく、圧下率で30%までは後の熱処理後に結晶配向性が劣化しないことは確認している。
しかしながら、これ以上の加工を加えると、銅箔表面にクラックが発生するとともに、圧延、熱処理後の銅箔の結晶配向性が悪くなる。
なお、上記説明のとおり、密着強度は180°ピールで0.1N/cm以上あれば、研磨工程や、熱処理の通板工程など、ハンドリングさえ注意すれば剥離などの問題はないものの、さらに品質の観点から、180°ピールで3N/cm以上の強度を確保することが望ましい。
さらに、密着強度の向上のために非磁性の金属板の元素の熱拡散が起こる温度より高温で処理することが必要となる。例えばSUS316Lでは400℃以上に保持すると、接合界面で金属拡散、特に銅原子の金属板への移動が起こり、密着強度が向上する。
また、700℃以上の高温で処理する場合は連続焼鈍炉で数秒~5分保持するとよい。
好ましくは800℃以上950℃以下で1分~5分処理し、銅の拡散距離を60nm以上とするとよい。
図3は、本発明の実施の形態2の超電導化合物用基板10の構成を示す概略断面図である。
実施の形態2の超電導化合物用基板10は、基板となる非磁性金属板T1の両面に、表面活性化接合にて銅層T2を設け、熱処理後、積層体の両面の銅層T2上にニッケルめっきからなる保護層T3を設けたものである。
実施の形態2の超電導化合物用基板10においても、銅層T2と接する非磁性金属板T1に銅層T2が10nm以上拡散している。
<実験例1>
幅200mm、厚み18μm、Agが200ppm添加された高圧下銅箔と100μm厚のSUS316L(焼鈍材)を、図1のような表面活性化接合装置を用い接合し、銅/SUS316L積層体を形成した。
スパッタエッチングは、0.1Pa下で、プラズマ出力を200W、接合面へのスパッタ照射時間を20秒とし、銅箔および金属板の吸着物層を完全に除去した。また圧延ロールでの加圧は600MPaとした。
次に、前記積層体に、500℃、1時間の条件にて熱処理を施した。この熱処理後の積層体において、銅拡散距離の測定、ピール強度の測定、ならびに銅表面上の(200)面結晶配高度(CuのΔΦ)の測定を行った。
また、前記熱処理後の積層体の銅表面上に保護層として1μm厚のニッケルめっきを施した後、そのニッケル層の(200)面結晶配向度(NiのΔΦ)の測定を行った。ニッケルめっきは一般のワット浴を使用し、電流密度を4A/dm2、浴温度を60℃、pH3にて行った。
保護層(ニッケルコーティング)形成前の銅/SUS316L積層体について、SUS316Lへ銅が拡散した距離を、透過電子顕微鏡(TEM 日本電子製 JEM-2010F)観察及びエネルギー分散型X線スペクトル分析(EDS ノーラン製 UTWSi-Li)により測定した。
銅拡散距離の定義は、銅/SUS316L積層界面からSUS316L側をEDSにて元素分析し、銅濃度が2at%以上検出される位置までの距離を銅拡散距離とした。
結晶配高度は、X線回折装置(リガク製 RINT2500)を用い、銅(111)およびニッケル(111)の極点図を作成し、α=35°に現れる4本ピークの半値幅(°)を測定した。
表1に記載の熱処理条件以外は実験例1-1と同様とした。
表1に記載のように、熱処理を施さないこと以外は実験例1-1と同様とした。
また、実験例2~6に示すように、熱処理温度を上昇させると銅の拡散距離も増すとともに、ピール強度も上昇していき、100nmの拡散距離を確保した段階で、測定中に銅箔が破断してしまうほどピール強度が向上することがわかった。
図6は、本発明の超電導化合物用基板に超電導化合物を積層した参考形態1の超電導化合物積層板を示す概略断面図である。
参考形態1の超電導化合物積層板15は、実施の形態1(図2参照)の超電導化合物用基板10の保護層T3の上に、さらに、CeO2やジルコニア添加酸化イットリウム(YSZ)などの中間層T4、RE123膜などの超電導化合物層T5、表面保護膜T6を形成したものである。
参考形態1の超電導化合物積層板15は、非磁性金属板T1に銅層T2が10nm以上拡散しているので、非磁性金属板T1と銅層T2との密着強度が強く、優れた超電導化合物積層板15となっている。
図7は、本発明の超電導化合物用基板に超電導化合物を積層した参考形態2の超電導化合物積層板を示す概略断面図である。
参考形態2の超電導化合物積層板20は、実施の形態2(図3参照)の超電導化合物用基板10の両面の保護層T3上に、さらに、CeO2やジルコニア添加酸化イットリウム(YSZ)などの中間層T4、RE123膜などの超電導化合物層T5、表面保護膜T6を、それぞれ形成したものである。
参考形態2の超電導化合物積層板20は、非磁性金属板T1の両面上の銅層T2がそれぞれ10nm以上拡散しているので、非磁性金属板T1と銅層T2との密着強度が強く、優れた超電導化合物積層板20となっている。
T2、L2 銅層(銅箔)、
T3 保護層(ニッケル層)、
T4 酸化物中間層、
T5 超電導化合物層、
T6 保護膜、
D1 表面活性化接合装置、
S1,S2 リコイラー部、
S3 電極A、
S4 電極B、
S5 圧接ロール工程、
S6 巻き取り工程、
5 実施の形態1の超電導化合物用基板、
10 実施の形態2の超電導化合物用基板、
15 参考形態1の超電導化合物積層板
20 参考形態2の超電導化合物積層板
Claims (4)
- 非磁性の金属板と、その上層に設けられた銅層と、その上層に設けられた保護層とを有する、超電導化合物用基板であって、
前記非磁性金属板に前記銅が10nm以上拡散している、ことを特徴とする超電導化合物用基板。 - 前記金属板が非磁性ステンレス鋼板であることを特徴とする請求項1に記載の超電導化合物用基板。
- 圧下率90%以上で加工された銅箔の表面をスパッタエッチングして表面の吸着物を除去する工程と、
非磁性の金属板の表面をスパッタエッチングする工程と、
前記銅箔と前記金属板とを圧延ロールにより加圧して接合し積層体を形成する工程と、
前記積層体を加熱して前記銅を結晶配向させるとともに、前記銅を前記金属板に10nm以上熱拡散させる熱処理工程と、
前記積層体の銅表面上に保護層を積層する工程と、を有する、
ことを特徴とする超電導化合物用基板の製造方法。 - 前記金属板が非磁性ステンレス鋼板であることを特徴とする請求項3に記載の超電導化合物用基板の製造方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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IN4891DEN2012 IN2012DN04891A (ja) | 2009-11-20 | 2010-11-12 | |
KR1020127012288A KR101763850B1 (ko) | 2009-11-20 | 2010-11-12 | 초전도 화합물용 기판의 제조 방법 |
EP10831308.1A EP2503560A4 (en) | 2009-11-20 | 2010-11-12 | Substrate for superconducting compound and method for manufacturing the substrate |
RU2012125607/07A RU2012125607A (ru) | 2009-11-20 | 2010-11-12 | Подложка для сверхпроводящего соединения и способ ее получения |
KR1020177005588A KR101834356B1 (ko) | 2009-11-20 | 2010-11-12 | 초전도 화합물용 기판 |
US13/510,406 US8993064B2 (en) | 2009-11-20 | 2010-11-12 | Substrate for superconducting compound and method for manufacturing the substrate |
CN201080051041.3A CN102667968B (zh) | 2009-11-20 | 2010-11-12 | 超导化合物用基板及其制造方法 |
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JP2009265285A JP5517196B2 (ja) | 2009-11-20 | 2009-11-20 | 超電導化合物用基板及びその製造方法 |
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EP (1) | EP2503560A4 (ja) |
JP (1) | JP5517196B2 (ja) |
KR (2) | KR101763850B1 (ja) |
CN (2) | CN102667968B (ja) |
IN (1) | IN2012DN04891A (ja) |
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Cited By (3)
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JP2013129854A (ja) * | 2011-11-22 | 2013-07-04 | Jx Nippon Mining & Metals Corp | 超電導膜形成用圧延銅箔 |
JP2013129853A (ja) * | 2011-11-22 | 2013-07-04 | Jx Nippon Mining & Metals Corp | 超電導膜形成用圧延銅箔 |
CN114207646A (zh) * | 2019-09-18 | 2022-03-18 | 黄教灿 | 支付系统及其支付方法 |
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CN102210009B (zh) * | 2008-11-12 | 2014-04-16 | 东洋钢钣株式会社 | 半导体元件形成用金属积层基板的制造方法及半导体元件形成用金属积层基板 |
JP2013101832A (ja) * | 2011-11-08 | 2013-05-23 | Toyo Kohan Co Ltd | エピタキシャル成長用基板及びその製造方法、並びに超電導線材用基板 |
WO2013157286A1 (ja) * | 2012-04-16 | 2013-10-24 | 古河電気工業株式会社 | 超電導成膜用基材及び超電導線並びに超電導線の製造方法 |
JP6543439B2 (ja) * | 2014-04-01 | 2019-07-10 | 東洋鋼鈑株式会社 | 金属積層材の製造方法 |
JP6381944B2 (ja) * | 2014-04-01 | 2018-08-29 | 東洋鋼鈑株式会社 | 金属積層材の製造方法 |
KR102403087B1 (ko) * | 2014-10-27 | 2022-05-27 | 도요 고한 가부시키가이샤 | 초전도 선재용 기판 및 그 제조 방법과 초전도 선재 |
US10832843B2 (en) * | 2015-03-17 | 2020-11-10 | The University Of Houston System | Superconductor compositions |
JP6074527B2 (ja) * | 2016-03-08 | 2017-02-01 | 東洋鋼鈑株式会社 | エピタキシャル成長用基板及びその製造方法、並びに超電導線材用基板 |
KR102511594B1 (ko) * | 2017-03-29 | 2023-03-17 | 도요 고한 가부시키가이샤 | 압연 접합체 |
JP7162960B2 (ja) * | 2018-08-06 | 2022-10-31 | 東洋鋼鈑株式会社 | 圧延接合体及びその製造方法、並びに電子機器用の放熱補強部材 |
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- 2010-11-12 KR KR1020127012288A patent/KR101763850B1/ko active IP Right Grant
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CN114207646A (zh) * | 2019-09-18 | 2022-03-18 | 黄教灿 | 支付系统及其支付方法 |
Also Published As
Publication number | Publication date |
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JP5517196B2 (ja) | 2014-06-11 |
CN102667968B (zh) | 2014-07-09 |
CN104091647B (zh) | 2017-10-24 |
KR101834356B1 (ko) | 2018-03-05 |
KR20120091206A (ko) | 2012-08-17 |
CN102667968A (zh) | 2012-09-12 |
KR20170026650A (ko) | 2017-03-08 |
JP2011108592A (ja) | 2011-06-02 |
RU2012125607A (ru) | 2013-12-27 |
IN2012DN04891A (ja) | 2015-09-25 |
EP2503560A1 (en) | 2012-09-26 |
US20130040821A1 (en) | 2013-02-14 |
CN104091647A (zh) | 2014-10-08 |
EP2503560A4 (en) | 2017-12-20 |
KR101763850B1 (ko) | 2017-08-01 |
US8993064B2 (en) | 2015-03-31 |
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