WO2001035423A1 - Conducteur supraconducteur haute temperature en oxyde et procede de preparation dudit conducteur - Google Patents
Conducteur supraconducteur haute temperature en oxyde et procede de preparation dudit conducteur Download PDFInfo
- Publication number
- WO2001035423A1 WO2001035423A1 PCT/JP2000/007649 JP0007649W WO0135423A1 WO 2001035423 A1 WO2001035423 A1 WO 2001035423A1 JP 0007649 W JP0007649 W JP 0007649W WO 0135423 A1 WO0135423 A1 WO 0135423A1
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- WO
- WIPO (PCT)
- Prior art keywords
- oxide
- pipe
- powder
- superconducting wire
- temperature superconducting
- Prior art date
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- 239000002887 superconductor Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910052709 silver Inorganic materials 0.000 claims abstract description 86
- 239000004332 silver Substances 0.000 claims abstract description 86
- 239000000463 material Substances 0.000 claims abstract description 52
- AVDDIFQZBOYSJV-UHFFFAOYSA-N [O-2].[V+5].[Sr+2] Chemical compound [O-2].[V+5].[Sr+2] AVDDIFQZBOYSJV-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910002480 Cu-O Inorganic materials 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims description 118
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 84
- 238000010438 heat treatment Methods 0.000 claims description 43
- 238000004519 manufacturing process Methods 0.000 claims description 43
- 239000002002 slurry Substances 0.000 claims description 32
- 239000011248 coating agent Substances 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 229910052712 strontium Inorganic materials 0.000 claims description 5
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 5
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 4
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 claims description 3
- 229910001935 vanadium oxide Inorganic materials 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims 2
- 238000007254 oxidation reaction Methods 0.000 claims 2
- 230000002411 adverse Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 229910052797 bismuth Inorganic materials 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- 239000011230 binding agent Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 238000005491 wire drawing Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 2
- 238000000462 isostatic pressing Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- HBEQXAKJSGXAIQ-UHFFFAOYSA-N oxopalladium Chemical compound [Pd]=O HBEQXAKJSGXAIQ-UHFFFAOYSA-N 0.000 description 1
- 229910003445 palladium oxide Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- VIIJTIRNANJGHH-UHFFFAOYSA-N strontium vanadium Chemical compound [V].[Sr] VIIJTIRNANJGHH-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H10N60/20—Permanent superconducting devices
- H10N60/203—Permanent superconducting devices comprising high-Tc ceramic materials
-
- 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
- H10N60/0801—Manufacture or treatment of filaments or composite wires
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49014—Superconductor
Definitions
- the present invention relates to an oxide high-temperature superconducting wire and a method for producing the same, and more particularly to an oxide high-temperature superconducting wire used in the fields of electric power, transportation, high energy and medical treatment, and a method for producing the same.
- the superconductor in order to supply an alternating current for power supply to such a superconductor, the superconductor is covered with a silver sheath, the silver sheath is covered with a high-resistance body, and the high-resistance body is further made of metal.
- a superconducting wire as coated is used.
- the reason why the superconductor is covered with the silver sheath is to prevent the crystal structure of the superconductor from being destroyed during drawing or the like.
- the reason why the silver sheath is covered with a high-resistance material is to reduce the AC loss. Further, the reason why the high-resistance element is covered with metal is to obtain the flexibility required for a superconducting wire.
- a superconducting wire having the above-described structure is disclosed in, for example, International Publication WO96 / 28853 / Japanese Patent Application Laid-Open No. H10-501502.
- the periphery of the oxide superconductor is covered with silver or the like, and further, the periphery is covered with a metal, and the metal is oxidized, thereby forming a metal oxide between the silver and the metal.
- a resistor is formed.
- the oxide superconductor is coated with silver, and the periphery thereof is made of a resistive alloy ( By coating with a high-resistance material and oxidizing the resistive alloy, an insulating oxide is formed between silver and the resistive alloy.
- An object of the present invention is to solve the above-described problems.
- An object of the present invention is to provide a structure of a high-temperature superconducting wire and a method of manufacturing the same. Disclosure of the invention
- An oxide high-temperature superconducting wire includes an oxide superconductor, a sheath, a high-resistance body, and a covering.
- the sheath body covers the oxide superconductor and is made of a material containing silver.
- the high-resistance body covers the sheath body and is made of strontium-vanadium oxide.
- the coating covers the high-resistance body and is made of a material containing silver.
- the high-resistance body composed of strontium-vanadium oxide which is arranged for the purpose of reducing the AC loss, includes an oxide superconductor and a sheath body.
- it does not have such an adverse effect as to deteriorate the superconductivity.
- AC loss can be reduced, and as a result The current density can be improved.
- An oxide high-temperature superconducting wire includes an oxide superconductor, a high-resistance body, and a coating.
- the high-resistance body is coated with an oxide superconductor and is made of ceramics.
- the coating covers the high-resistance element and is made of a material containing silver.
- the ceramic is preferably composed of strontium-vanadium oxide.
- An oxide high-temperature superconducting wire includes: an oxide superconductor, a first high-resistance body, a sheath body, a second high-resistance body, and a coating.
- the first ⁇ resistor covers the oxide superconductor and is made of ceramics.
- the sheath body covers the first high-resistance body and is made of a material containing silver.
- the second high resistance body covers the sheath body and is made of ceramics.
- the coating covers the second high-resistance body and is made of a material containing silver.
- the ceramic is preferably made of strontium-vanadium oxide.
- the high-resistance body or the first high-resistance body made of ceramics arranged for the purpose of reducing the AC loss is provided on the surface of the oxide superconductor. Contact does not cause any adverse effects such as deterioration of superconductivity. Therefore, the high-resistance element or the first or second high-resistance element performs the original function of reducing the AC loss, and as a result, the critical current density can be improved.
- a plurality of sheaths are present, and a high-resistance body or a second high-resistance body is interposed between each of the plurality of sheath bodies. Is preferred. By doing so, the AC loss can be further reduced.
- the oxide superconductor preferably has a filament-like form.
- High resistance, strontium over vanadium oxide constituting the first or second high-resistance element preferably comprises at least one S i ⁇ VsO u or S r V 2 0 6.
- the material constituting the sheath and the covering is preferably made of silver or a silver alloy.
- the oxide superconductor is preferably a Bi (Pb) _Sr—Ca—Cu—O superconductor.
- This manufacturing method includes the following steps.
- This manufacturing method includes the following steps.
- This manufacturing method includes the following steps.
- This manufacturing method includes the following steps.
- This manufacturing method includes the following steps.
- Strontium vanadium is applied to the outer peripheral surface of the first pipe into which the green compact has been introduced.
- This manufacturing method includes the following steps.
- (c) a step of applying a slurry prepared from strontium-vanadium oxide powder to the outer peripheral surface of the first pipe filled with the raw material powder or the oxide superconductor powder.
- the particle diameter of the strontium-vanadium oxide powder is preferably 1 ⁇ m or more and 10 ⁇ m or less.
- the step of performing plastic working and heat treatment on the second pipe includes performing compression processing and heat treatment after performing twist processing on the second pipe. Is preferred.
- FIG. 1 is a diagram schematically showing a cross section of one embodiment of an oxide high-temperature superconducting wire according to one aspect of the present invention.
- FIG. 2 is a diagram schematically showing a cross section of another embodiment of the oxide high-temperature superconducting wire according to one aspect of the present invention.
- FIG. 3 is a diagram schematically showing a cross section of one embodiment of an oxide high-temperature superconducting wire according to still another aspect of the present invention.
- FIG. 4 is a diagram schematically showing a cross section of one embodiment of an oxide high-temperature superconducting wire according to another aspect of the present invention.
- FIG. 1 is a diagram schematically showing a cross section of one embodiment of an oxide high-temperature superconducting wire according to one aspect of the present invention.
- a sheath 2 made of silver is formed so as to cover the oxide superconductor filament 1 made of Bi (Pb) -Sr-Ca-Cu- ⁇ superconductor.
- a high-resistance body 3 made of strontium-vanadium oxide is formed so as to cover the sheath body 2.
- a coating 4 made of silver is formed so as to cover a large number of the sheaths 2 covered with the high-resistance 3.
- FIG. 2 is a diagram schematically showing a cross section of another embodiment of the oxide high-temperature superconducting wire according to one aspect of the present invention.
- a silicon body 2 made of silver is coated so as to cover an oxide superconductor filament 1 made of a Bi (Pb) -Sr-Ca-Cu-O-based superconductor.
- a high-resistance body 3 made of strontium-vanadium oxide is formed so as to cover many sheath bodies 2.
- a coating 4 made of silver is formed so as to cover the high resistance element 3.
- FIG. 3 is a diagram schematically showing a cross section of one embodiment of an oxide high-temperature superconducting wire according to still another aspect of the present invention.
- the strontium-vanadium oxide is formed so as to cover the oxide superconductor filament 1 composed of the Bi (Pb) —Sr—Ca—Cu— ⁇ superconductor.
- One high-resistance body 31 is formed.
- a sheath 2 made of silver is formed so as to cover the first high-resistance body 31.
- a strontium bath is applied so as to cover this sheath 2.
- a second high-resistance body 32 made of sodium oxide is formed. Many sheath bodies 2 covered with the second high-resistance body 32 are covered with a covering 4 made of silver.
- FIG. 4 is a diagram schematically showing a cross section of one embodiment of an oxide high-temperature superconducting wire according to another aspect of the present invention.
- strontium-vanadium oxide is used to cover the oxide superconductor filament 1 composed of Bi (Pb) -Sr-Ca-Cu_ ⁇ -based superconductor.
- the high resistance body 3 is formed.
- Many high-resistance elements 3 are covered with a coating 4 made of silver.
- the oxide high-temperature superconducting wire having a flat elliptical cross-section is shown, but the cross-sectional form of the oxide high-temperature superconducting wire is limited to the above shape. Instead, it may have various forms such as a form having a tape-shaped cross section.
- the obtained powder was heat-treated at a temperature of 700 ° C for 12 hours, and then pulverized by a ball mill. Next, this powder was heat-treated at a temperature of 800 ° C. for 8 hours, and then pulverized with a vinole mill. Further, the temperature of this powder is 850. After the heat treatment for 4 hours, it was pulverized with a ball mill.
- the powder thus obtained was subjected to heat treatment at a temperature of 800 ° C. for 2 hours to be degassed, and then charged into a silver pipe as a first pipe having an outer diameter of 25 mm and an inner diameter of 22 mm.
- the silver pipe filled with the powder was drawn until the outer diameter became 20 mm ⁇ .
- the wire after wire drawing was filled and drawn until the outside diameter of the silver pipe became 1.44 ⁇ .
- the wire thus obtained was cut to reduce the number of wires to 61.
- the 61 wires were bundled and fitted into a silver pipe as a third pipe having an outer diameter of 14 ⁇ and an inner diameter of 13 mm ⁇ , and wire drawing was performed until the outer diameter became 1.25 ⁇ . Rolling was performed until the thickness of the obtained wire became 0.25 mm to obtain a tape-shaped wire.
- SreVsOu oxide powder was applied using the same manufacturing process as above. A wire rod not filled and a wire rod filled with an oxide powder of SrV 2 ⁇ 6 instead of the oxide powder of SreVsOu were also prepared.
- the wire thus obtained was heat-treated at 845 ° C for 50 hours, and then cooled to room temperature. After that, the wire was rolled to a thickness of 0.22 mm, and then heat-treated at 840 ° C for 50 hours to obtain a high-temperature oxide superconducting wire.
- the obtained high temperature oxide superconducting wire, S r 6 V 2 O n oxide coated or S r V 2 0 6 dc four in liquid nitrogen while removing the oxide coating of the both ends of the wire The critical current density was measured by the method.
- FIG. 1 schematic form of the cross section of the oxide high-temperature superconducting wire comprising an S ReVsOu or oxides of S r V 2 ⁇ 6 is shown in FIG.
- a powder that was 0 was produced.
- the obtained powder was heat-treated at a temperature of 700 ° C. for 12 hours and then pulverized by a ball mill.
- this powder was heat-treated at a temperature of 800 ° C for 8 hours, and then pulverized by a pole mill.
- This powder was further heat-treated at 850 ° C for 4 hours and then pulverized by a ball mill.
- the powder thus obtained was heat-treated at a temperature of 800 ° C. for 2 hours and degassed. Thereafter, this powder was filled into a silver pipe as a first pipe having an outer diameter of 25 mm ⁇ and an inner diameter of 22 mm ⁇ , and the silver pipe filled with the powder was drawn until the outer diameter became 1.30 ⁇ .
- the wire obtained by wire drawing was cut to reduce the number of wires to 61 wires.
- 61 wires obtained in the above-mentioned steps were inserted into each of these holes.
- the green compact into which the wire is inserted is introduced into a silver pipe as a second pipe having an outer diameter of 14 mm ⁇ and an inner diameter of 13 mm ⁇ , and the outer diameter of the silver pipe is 1.25 mm ⁇ . Wire drawing was performed until it became possible. Furthermore, rolling was performed until the thickness of the silver pipe became 0.25 mm to obtain a tape-shaped wire.
- This tape-shaped wire was subjected to a heat treatment at a temperature of 845 ° C for 50 hours, and then cooled to room temperature. Thereafter, the wire was rolled to a thickness of 0.22 mm, and then heat-treated at 840 ° C for 50 hours to obtain an oxide high-temperature superconducting wire.
- Fig. 2 shows a schematic cross section of the oxide high-temperature superconducting wire obtained as described above.
- the obtained wire was measured critical current density by the dc four-probe method in liquid nitrogen while divided the oxide coating of S r 6 V 2 O n at both ends of the wire.
- the critical current density was 25,000 ⁇ 10 4 A / m 2 .
- the obtained powder was heat-treated at a temperature of 700 ° C. for 12 hours, and then pulverized by a ball mill. Next, this powder was heat-treated at 800 ° C. for 8 hours, and then pulverized by a ball mill. Further, this powder was heat-treated at a temperature of 850 ° C for 4 hours, and then pulverized with a ball mill.
- the powder thus obtained was heat-treated at a temperature of 800 ° C. for 2 hours and degassed. Thereafter, this powder is filled into a silver pipe as the first pipe having an outer diameter of 25 mm ⁇ and an inner diameter of 22 mm ⁇ , and the silver pipe filled with the powder is drawn until the outer diameter becomes 1 ⁇ 30 ⁇ . did.
- a slurry was prepared by mixing Sr 6 V 20 % oxide powder having an average particle size of 5.0 ⁇ m and an organic binder. The surface was coated with a thickness of 100 m, the coated wire was subjected to a binder removal process, and then the wire was cut into 61 wires. 6 One wire rod was bundled and fitted into a silver pipe as the second pipe with an outer diameter of 14 ⁇ and an inner diameter of 13 mm ⁇ , and was drawn until the outer diameter became 1.25 mm ⁇ . Rolling was performed until the thickness of the obtained wire became 0.25 mm to obtain a tape-shaped wire.
- This tape-shaped wire was subjected to a heat treatment at a temperature of 845 for 50 hours, and then cooled to room temperature. After that, the tape-shaped wire was rolled to a thickness of 0.22 mm, and then heat-treated at a temperature of 840 ° C for 200 hours to obtain an oxide high-temperature superconducting wire.
- FIG. 1 shows a schematic cross section of the oxide high-temperature superconducting wire obtained as described above.
- the critical current density of the obtained wire was measured by a DC four-terminal method in liquid nitrogen with the SrsVsOu oxide coating removed at both ends of the wire. As a result of the measurement, the critical current density was 23,000 X 10 4 AZm 2 .
- the powder thus obtained was heat-treated at a temperature of 800 ° C. for 2 hours and degassed. This powder was subjected to isostatic pressing to produce a rod-shaped compact having an outer diameter of 21 mm ⁇ .
- a slurry was prepared by mixing SreV ⁇ u oxide powder having an average particle size of several / and an organic binder.
- the obtained slurry is coated on the surface of the rod-shaped green compact obtained in the above process with a thickness of 200 m, and after performing binder removal treatment, the rod-shaped green compact is outer diameter 25 mm ⁇ , inner diameter It was inserted into a silver pipe as the first pipe of 22 mm ⁇ .
- the silver pipe into which the compact was inserted was drawn until the outer diameter became 1.30 mm ⁇ .
- the surface of this wire is coated with slurry to a thickness of 100 m, A binder removal treatment was applied to the singed wire.
- the wire thus obtained was cut to reduce the number of wires to 61 wires.
- the 61 wires were bundled, fitted to a silver pipe as the second pipe with an outer diameter of 14 mm ⁇ and an inner diameter of 13 mm ⁇ , and drawn to an outer diameter of 1.25 ⁇ . . Rolling was performed until the thickness of the obtained wire became 0.25 mm to obtain a tape-shaped wire.
- This tape-shaped wire was heat-treated at 845 ° C for 50 hours, and then cooled to room temperature. Thereafter, the tape-shaped wire was rolled until the thickness became 0.21 mm, and then heat-treated at a temperature of 840 ° C for 150 hours to obtain an oxide high-temperature superconducting wire.
- FIG. 3 shows a schematic cross section of the oxide high-temperature superconducting wire obtained as described above.
- the critical current density of the obtained wire was measured by a DC four-terminal method in liquid nitrogen with the SrsVsOu oxide coating removed at both ends of the wire. As a result of the measurement, the critical current density was 30,000 ⁇ 10 4 AZm 2 .
- the powder thus obtained was heat-treated at a temperature of 800 ° C. for 2 hours and degassed.
- particle size to produce a slurry by mixing 1 ⁇ 1 0 ⁇ oxide powder and an organic binder S r V 2 0 6 of.
- the obtained slurry was coated on the inner surface of a silver pipe having an outer diameter of 25 mm ⁇ and an inner diameter of 22 mm ⁇ with a thickness of 200 ⁇ and subjected to a binder removal treatment.
- the silver pipe as the first pipe treated in this way was filled with the powder obtained in the above step, and the filled silver pipe was drawn until the outer diameter became 1.3 ⁇ .
- the surface of this wire is coated with slurry at a thickness of 100 m, The coated wire was subjected to a binder removal treatment.
- the obtained wire was cut to reduce the number of wires to 61 wires.
- This one wire rod is bundled and fitted to a silver pipe as the second pipe with an outer diameter of 14 ⁇ and an inner diameter of 13mm ⁇ , and drawn until the outer diameter becomes 1.25mm ⁇ . did. Rolling was performed until the thickness of the obtained wire became 0.25 mm to obtain a tape-shaped wire.
- This tape-shaped wire was heat-treated at 845 ° C for 50 hours, and then cooled to room temperature. Thereafter, the tape-shaped wire was rolled until the thickness became 0.21 mm, and then heat-treated at a temperature of 840 ° C. for 150 hours to obtain an oxide high-temperature superconducting wire.
- FIG. 3 shows a schematic cross section of the oxide high-temperature superconducting wire obtained as described above.
- the obtained wire was measured critical current density by the dc four-probe method in liquid nitrogen while removing the oxide coating of S r V 2 0 6 at both end portions of the wire.
- the critical current density was 27,000 ⁇ 10 4 AZm 2 .
- the powder thus obtained was heat-treated at a temperature of 800 ° C. for 2 hours and degassed. This powder was subjected to isostatic pressing to produce a rod-shaped compact having an outer diameter of 21 mm ⁇ .
- an oxide powder of Sr 6 V 2 ⁇ having an average particle size of several ⁇ was mixed with an organic binder to prepare a slurry.
- the rod-shaped green compact is converted into a silver pipe as the first pipe with an outer diameter of 25 ⁇ and an inner diameter of 22 mm ⁇ . Inserted.
- the silver pipe in which the compact was inserted was drawn until the outer diameter became 1.44 ⁇ .
- the wire thus obtained was cut to reduce the number of wires to 61.
- This tape-shaped wire was heat-treated at a temperature of 845 ° C for 50 hours and then cooled to room temperature. Thereafter, the tape-shaped wire was rolled until the thickness became 0.21 mm, and then heat-treated at a temperature of 840 ° C for 150 hours to obtain an oxide high-temperature superconducting wire.
- FIG. 1 A schematic cross section of the oxide high-temperature superconducting wire obtained as described above is shown in FIG.
- the critical current density of the obtained wire was measured by a DC four-terminal method in liquid nitrogen with the Sr 6 V 2 ⁇ ⁇ oxide coating removed at both ends of the wire. density was 28, 000 X 1 0 4 AZm 2.
- B i 2 ⁇ 3 and were mixed with P b O and S r C0 3 and C a C0 3 and C uO, B i: P b : S r: C a: Cu l 8:. 0. 4:
- a powder having a yarn composition ratio (atomic ratio) of 2.0: 2.0: 3.0 was prepared. The obtained powder was heat-treated at a temperature of 700 ° C. for 12 hours, and then pulverized by a ball mill. Next, this powder was heat-treated at a temperature of 800 for 8 hours, and then pulverized by a ball mill. This powder was further heat-treated at 850 ° C for 4 hours and then ground with a ball mill.
- the powder thus obtained was heat-treated at a temperature of 800 ° C. for 2 hours and degassed. Thereafter, this powder was filled into a silver pipe as a first pipe having an outer diameter of 25 mm ⁇ and an inner diameter of 22 mm ⁇ . The silver pipe filled with the powder was drawn until the outer diameter became 2 ⁇ . Thereafter, the oxide powder S r 6 V 2 ⁇ "of particle sizes. 1 to 1 0 mu m, an outer diameter of 23 mm ⁇ i>, a silver pipe of the above drawing as a second pipe having an inner diameter of 22 mm phi The processed wire was filled and drawn until the outer diameter of the silver pipe became 1.44 mm ⁇ The obtained wire was cut into 61 wires.
- This one wire rod is bundled and fitted into a silver pipe as a third pipe with an outer diameter of 14 mm and a diameter of 13 mm ⁇ , and is stretched until the outer diameter becomes 1.25 ⁇ . Wire processing was performed. The wire was further twisted at a twist pitch of 1 Omm, and rolled until the thickness became 0.25 mm to obtain a tape-shaped wire.
- This tape-shaped wire was subjected to a heat treatment at a temperature of 8445 ° C for 50 hours, and then cooled to room temperature. After that, the tape-shaped wire was rolled to a thickness of 0.22 mm, and then heat-treated at a temperature of 840 ° C for 100 hours to obtain an oxide high-temperature superconducting wire. .
- FIG. 1 A schematic cross section of the oxide high-temperature superconducting wire thus obtained is shown in FIG.
- the critical current density was measured by the four-terminal method.
- the oxide high-temperature superconducting wire according to the present invention is used in fields such as electric power, transportation, high energy, and medical treatment.
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Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/869,376 US6828508B1 (en) | 1999-11-08 | 2000-10-30 | Oxide high-temperature superconductor wire and method of producing the same |
DE60042732T DE60042732D1 (de) | 1999-11-08 | 2000-10-30 | Hochtemperatur-oxid-supraleiterdraht und verfahren zu seiner herstellung. |
AU79643/00A AU777934B2 (en) | 1999-11-08 | 2000-10-30 | High-temperature oxide superconductor wire and method for preparing the same |
JP2001537076A JP4709455B2 (ja) | 1999-11-08 | 2000-10-30 | 酸化物高温超伝導線材および製造法 |
EP00970226A EP1156494B1 (en) | 1999-11-08 | 2000-10-30 | High-temperature oxide superconductor wire and method for preparing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11/317021 | 1999-11-08 | ||
JP31702199 | 1999-11-08 |
Publications (1)
Publication Number | Publication Date |
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WO2001035423A1 true WO2001035423A1 (fr) | 2001-05-17 |
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PCT/JP2000/007649 WO2001035423A1 (fr) | 1999-11-08 | 2000-10-30 | Conducteur supraconducteur haute temperature en oxyde et procede de preparation dudit conducteur |
Country Status (6)
Country | Link |
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US (1) | US6828508B1 (ja) |
EP (1) | EP1156494B1 (ja) |
JP (1) | JP4709455B2 (ja) |
AU (1) | AU777934B2 (ja) |
DE (1) | DE60042732D1 (ja) |
WO (1) | WO2001035423A1 (ja) |
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KR102473163B1 (ko) * | 2016-09-06 | 2022-12-02 | 한국전기연구원 | 낮은 안정화 모재 비율을 갖는 저온 초전도 선재, 이를 포함하는 초전도 코일 |
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JPH0676650A (ja) * | 1992-08-25 | 1994-03-18 | Mitsubishi Cable Ind Ltd | 酸化物超電導線素材及びその超電導線 |
JPH07169342A (ja) * | 1993-12-14 | 1995-07-04 | Furukawa Electric Co Ltd:The | 多芯酸化物超電導線材 |
JPH10247428A (ja) * | 1997-03-04 | 1998-09-14 | Toshiba Corp | 酸化物超電導線材 |
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JPH0195409A (ja) * | 1987-10-05 | 1989-04-13 | Matsushita Electric Ind Co Ltd | 超電導線 |
DE3822685A1 (de) * | 1988-07-05 | 1990-01-11 | Asea Brown Boveri | Elektrischer leiter in draht- oder kabelform, bestehend aus mindestens zwei einzelheiten in form eines ummantelten drahtes oder eines mehrfachfilamentleiters oder eines koaxialkabels auf der basis eines keramischen hochtemperatur-supraleiters |
JP3158408B2 (ja) | 1989-01-26 | 2001-04-23 | 住友電気工業株式会社 | 酸化物超電導線材およびその製造方法 |
JPH05114313A (ja) * | 1991-10-23 | 1993-05-07 | Mitsubishi Cable Ind Ltd | 超電導限流線及びその製造方法 |
JPH07201231A (ja) * | 1993-12-28 | 1995-08-04 | Fujikura Ltd | 高温超電導導体素線 |
JPH11501765A (ja) * | 1995-03-15 | 1999-02-09 | ユニヴェルシテ ド ジュネーヴ,レプレセンテ パル ゾン デパルトマン ド フィジィーク ド ラ マティエール コンダンセー | 超電導性芯部材を有する電気導体及びそのような電気導体の製造方法 |
FR2747831B1 (fr) | 1996-04-22 | 1998-05-22 | Alsthom Cge Alcatel | Brin supraconducteur multifilamentaire htc et un procede de fabrication d'un tel brin |
US6397454B1 (en) * | 1996-09-26 | 2002-06-04 | American Superconductor Corp. | Decoupling of superconducting elements in high temperature superconducting composites |
EP0966767A1 (de) * | 1996-12-20 | 1999-12-29 | Université de Genève, représentée par son Département de physique de la matière condensée | Verfahren zur herstellung eines elektrischen leiters mit supraleitenden kernen sowie ein solcher leiter |
FR2761516B1 (fr) * | 1997-03-27 | 1999-05-07 | Alsthom Cge Alcatel | Procede de decouplage d'un brin multifilamentaire supraconducteur htc a matrice a base d'argent, et brin multifilamentaire ainsi realise |
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DE19803447A1 (de) * | 1998-01-30 | 1999-09-16 | Aventis Res & Tech Gmbh & Co | Verfahren zur Herstellung von Precursormaterial für die Produktion von Hochtemperatursupraleiter-Drähten |
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JP3783538B2 (ja) * | 2000-08-29 | 2006-06-07 | 住友電気工業株式会社 | 酸化物超電導線材の製造方法 |
-
2000
- 2000-10-30 AU AU79643/00A patent/AU777934B2/en not_active Expired
- 2000-10-30 WO PCT/JP2000/007649 patent/WO2001035423A1/ja active Application Filing
- 2000-10-30 US US09/869,376 patent/US6828508B1/en not_active Expired - Lifetime
- 2000-10-30 DE DE60042732T patent/DE60042732D1/de not_active Expired - Lifetime
- 2000-10-30 JP JP2001537076A patent/JP4709455B2/ja not_active Expired - Fee Related
- 2000-10-30 EP EP00970226A patent/EP1156494B1/en not_active Expired - Lifetime
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JPH0676650A (ja) * | 1992-08-25 | 1994-03-18 | Mitsubishi Cable Ind Ltd | 酸化物超電導線素材及びその超電導線 |
JPH07169342A (ja) * | 1993-12-14 | 1995-07-04 | Furukawa Electric Co Ltd:The | 多芯酸化物超電導線材 |
JPH10247428A (ja) * | 1997-03-04 | 1998-09-14 | Toshiba Corp | 酸化物超電導線材 |
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See also references of EP1156494A4 * |
Also Published As
Publication number | Publication date |
---|---|
DE60042732D1 (de) | 2009-09-24 |
EP1156494A4 (en) | 2007-07-25 |
US6828508B1 (en) | 2004-12-07 |
AU7964300A (en) | 2001-06-06 |
EP1156494A1 (en) | 2001-11-21 |
EP1156494B1 (en) | 2009-08-12 |
AU777934B2 (en) | 2004-11-04 |
JP4709455B2 (ja) | 2011-06-22 |
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