JPH0574235A - Aluminum stabilized superconducting wire - Google Patents
Aluminum stabilized superconducting wireInfo
- Publication number
- JPH0574235A JPH0574235A JP4032282A JP3228292A JPH0574235A JP H0574235 A JPH0574235 A JP H0574235A JP 4032282 A JP4032282 A JP 4032282A JP 3228292 A JP3228292 A JP 3228292A JP H0574235 A JPH0574235 A JP H0574235A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- superconducting wire
- wire
- superconducting
- ppm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
Landscapes
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、機械的強度並びに熱的
および電気的安定性に優れた、マグネット用導体等に好
適なアルミニウム安定化超電導線に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum-stabilized superconducting wire which has excellent mechanical strength and thermal and electrical stability and is suitable for magnet conductors and the like.
【０００２】[0002]
【従来の技術】従来、超電導マグネット等の導体には、
銅マトリックス中にＮｂ−Ｔｉ等の超電導フィラメント
を埋め込んだ超電導線が用いられている。2. Description of the Related Art Conventionally, for conductors such as superconducting magnets,
A superconducting wire in which a superconducting filament such as Nb-Ti is embedded in a copper matrix is used.
【０００３】このような超電導線は、例えば次のように
して製造される。まず、銅製のパイプ内にＮｂ−Ｔｉ合
金棒材を挿入して複合ビレットとなし、これを熱間で押
出して一体化し、次いで圧延、伸線等の伸延加工を施
す。また、多芯超電導線は、上記のようにして得られた
超電導線の多数本を銅もしくは銅合金製のパイプ内に充
填して複合ビレットとなし、これに前述と同様の加工・
処理を施して製造される。また、上記の超電導線または
多芯超電導線を、それぞれ所要数撚合わせることにより
超電導撚線を製造することができる。Such a superconducting wire is manufactured, for example, as follows. First, a Nb-Ti alloy rod is inserted into a copper pipe to form a composite billet, which is hot extruded to be integrated, and then subjected to a drawing process such as rolling and wire drawing. Further, the multi-core superconducting wire is filled with a large number of the superconducting wires obtained as described above in a pipe made of copper or a copper alloy to form a composite billet, which is processed in the same manner as described above.
Manufactured by processing. In addition, a superconducting twisted wire can be manufactured by twisting a required number of the above superconducting wires or multicore superconducting wires.
【０００４】ところで、アルミニウム安定化超電導線
は、前述の超電導線または超電導撚線に、残留抵抗比
（３００Ｋにおける電気抵抗値と１０Ｋにおける電気抵
抗値との比）が銅よりはるかに大きい高純度アルミニウ
ムを安定化材として被覆せしめたものある。アルミニウ
ム安定化超電導線は、銅のみを安定化材として被覆した
従来の銅安定化超電導線に較べて熱的電気的安定性に優
れている。しかも、アルミニウムの比重は銅の比重の１
／３であるため、この超電導線をマグネットに用いた場
合にマグネットの軽量化、小型化が可能となる。さら
に、アルミニウムの質量は銅の質量より小さく、これに
より素粒子透過性に優れるため、アルミニウム安定化超
電導線を用いた素粒子検出用マグネットへの応用が高エ
ネルギー物理学分野で検討されている。By the way, in the aluminum-stabilized superconducting wire, the above-mentioned superconducting wire or superconducting stranded wire is made of high-purity aluminum whose residual resistance ratio (the ratio of the electric resistance value at 300K to the electric resistance value at 10K) is much larger than that of copper. Is used as a stabilizing material. The aluminum-stabilized superconducting wire is superior in thermal and electrical stability to the conventional copper-stabilized superconducting wire in which only copper is coated as a stabilizing material. Moreover, the specific gravity of aluminum is 1 of that of copper.
Since it is / 3, the weight and size of the magnet can be reduced when this superconducting wire is used for the magnet. Further, since the mass of aluminum is smaller than that of copper, which makes it excellent in elementary particle permeability, application to a magnet for elementary particle detection using an aluminum-stabilized superconducting wire has been studied in the field of high energy physics.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、アルミ
ニウム安定化超電導線は、安定化材となす高純度アルミ
ニウムの機械的強度が低いため、大型マグネット用導体
として使用した場合に、電磁力により変形してしまうと
いう問題がある。However, the aluminum-stabilized superconducting wire is deformed by electromagnetic force when used as a conductor for a large magnet because the high-purity aluminum used as a stabilizing material has a low mechanical strength. There is a problem of being lost.
【０００６】本発明はかかる点に鑑みてなされたもので
あり、熱的・電気的安定性に優れ、かつマグネットに使
用した場合に、発生する電磁力に対する充分な機械的強
度を有するアルミニウム安定化超電導線を提供すること
を目的とする。The present invention has been made in view of the above points, and is aluminum stabilized having excellent thermal and electrical stability and sufficient mechanical strength against electromagnetic force generated when used in a magnet. The purpose is to provide a superconducting wire.
【０００７】[0007]
【課題を解決するための手段】本発明者らは、高エネル
ギー物理学研究所殿からの開発依頼により研究を重ねた
結果、アルミニウムの導電性を低下させずに機械的強度
を向上させる合金元素としてＺｎ、Ｓｉ、Ａｇ、Ｃｕ、
Ｃｅを見出だし、本発明をするに至った。[Means for Solving the Problems] The inventors of the present invention have conducted extensive research as a result of a development request from the Institute for High Energy Physics, and as a result, alloy elements that improve the mechanical strength of aluminum without lowering its conductivity. As Zn, Si, Ag, Cu,
After finding Ce, the present invention was completed.
【０００８】本発明は、銅マトリクス中に超電導フィラ
メントを埋設してなる超電導線材と、超電導線材の外周
に被覆されたアルミニウム安定化部材とを有し、アルミ
ニウム安定化部材が極低温における０．２％耐力が４kg
／mm2 以上、残留抵抗比が２５０以上であり、５０〜１
０００ppm のＺｎ、５０〜１５０ppm のＳｉ、５０〜４
００ppm のＡｇ、５０〜３００ppm のＣｕ、および３０
〜２０００ppm のＣｅからなる群より選ばれた少なくと
も１つを含有し、残部がＡｌと不可避的不純物であるア
ルミニウム合金からなることを特徴とするアルミニウム
安定化超電導線を提供する。The present invention has a superconducting wire rod in which a superconducting filament is embedded in a copper matrix, and an aluminum stabilizing member coated on the outer periphery of the superconducting wire rod, the aluminum stabilizing member being 0.2 at an extremely low temperature. % Yield strength is 4 kg
/ Mm 2 or more, residual resistance ratio of 250 or more, 50 to 1
000ppm Zn, 50-150ppm Si, 50-4
00ppm Ag, 50-300ppm Cu, and 30
Provided is an aluminum-stabilized superconducting wire containing at least one selected from the group consisting of ˜2000 ppm Ce and the balance being Al and an aluminum alloy which is an unavoidable impurity.
【０００９】本発明において、超電導線または超電導撚
線に被覆するアルミニウム安定化材に用いるアルミニウ
ム合金の極低温における０．２％耐力を４kg／mm2 以上
に限定した理由は、極低温における０．２％耐力が４kg
／mm2 未満では、得られたアルミニウム安定化超電導線
を大型マグネット用導体として使用した場合、アルミニ
ウム安定化超電導線が電磁力により変形してしまうため
である。In the present invention, the reason why the 0.2% proof stress at an extremely low temperature of the aluminum alloy used as the aluminum stabilizing material for coating the superconducting wire or the superconducting stranded wire is 4 kg / mm 2 or more is 0. 2% proof stress is 4 kg
This is because when the obtained aluminum-stabilized superconducting wire is used as a conductor for a large magnet at less than / mm 2 , the aluminum-stabilized superconducting wire is deformed by electromagnetic force.
【００１０】また、アルミニウム安定化材に用いたアル
ミニウム合金の残留抵抗比を２５０以上に限定した理由
は、残留抵抗比が２５０未満では熱的・電気的に充分な
安定性が得られないためである。なお、従来の銅安定化
超電導線は、安定化材である銅の残留抵抗比は、通常１
５０、すなわち１０Ｋにおける比抵抗値１．１×１０-8
Ω・cmに設計されている。アルミニウムの場合には、１
０Ｋにおける比抵抗値１．１×１０-8Ω・cmに相当する
残留抵抗比が２５０である。したがって、本発明のアル
ミニウム安定化超電導線の熱的・電気的安定性は、従来
の銅安定化超電導線に較べて同等以上のものとなる。The reason why the residual resistance ratio of the aluminum alloy used as the aluminum stabilizer is limited to 250 or more is that if the residual resistance ratio is less than 250, sufficient thermal and electrical stability cannot be obtained. is there. In the conventional copper-stabilized superconducting wire, the residual resistance ratio of copper, which is a stabilizing material, is usually 1
50, that is, the specific resistance value at 10K is 1.1 × 10 −8
It is designed for Ω · cm. 1 for aluminum
The residual resistance ratio corresponding to a specific resistance value of 1.1 × 10 −8 Ω · cm at 0 K is 250. Therefore, the thermal and electrical stability of the aluminum-stabilized superconducting wire of the present invention is equal to or higher than that of the conventional copper-stabilized superconducting wire.
【００１１】本発明において規定される０．２％耐力お
よび残留抵抗比を満足するアルミニウム合金としては、
例えば、Ｚｎを５０〜１０００ppm 含有し、残部がＡｌ
からなるＡｌ−Ｚｎ合金、Ｓｉを５０〜１５０ppm 含有
し残部がＡｌからなるＡｌ−Ｓｉ合金、Ａｇを５０〜４
００ppm 含有し残部がＡｌからなるＡｌ−Ａｇ合金、Ｃ
ｕを５０〜３００ppm 含有し残部がＡｌからなるＡｌ−
Ｃｕ合金、Ｃｅを３０〜２０００ppm 含有し残部がＡｌ
からなるＡｌ−Ｃｅ合金等の二元系合金、並びにＺｎ、
Ｓｉ、Ａｇ、Ｃｕ、Ｃｅの少なくとも２つを上記含有量
で含有した多元系合金が挙げられる。すなわち、本発明
においては、極低温における０．２％耐力が４kg／m
m2 、残留抵抗比が２５０以上であるアルミニウム合金
であればいずれのものでもよい。上記各合金における添
加元素量の限定理由は、下限未満では充分な機械的強度
が得られず、上限を超えると残留抵抗比が低下するため
である。また、超電導線をマグネットに加工した後、マ
グネットにより生じる電磁力に対して線材が動かないよ
うに、マグネットにエポキシ樹脂等の樹脂を含浸させた
り、またはエポキシ樹脂を半硬化させて絶縁材として導
体に巻いて電気絶縁層とし、熱処理によりこれを硬化さ
せて使用する場合がある。このような場合は、Ｚｎ５０
〜１０００ppm およびＡｇ５０〜４００ppm の少なく共
一つ、並びにＳｉ１０〜５０ppm 、Ｃｕ１０〜５０ppm
、またはＳｉ＋Ｃｕ１０〜５０ppm を含有し、残部が
Ａｌからなるアルミニウム合金が好ましい。この場合、
樹脂を硬化させるために１００〜１５０℃で１０〜３０
時間加熱する。この加熱処理によりマグネットが軟化し
て０．２％耐力等の機械的強度が低下する。上記のよう
に合金元素としてＺｎおよび／またはＡｇの他にＳｉ１
０〜５０ppm 、Ｃｕ１０〜５０ppm 、またはＳｉ＋Ｃｕ
１０〜５０ppm を含有させることにより、マグネットの
軟化温度が向上する。この場合、Ｓｉ、Ｃｕの添加量が
下限未満であると軟化温度向上の効果が不充分であり、
上限を超えると残留抵抗比が低下する。なお、これらの
アルミニウム合金は、いずれも合金元素がアルミニウム
マトリクス中に固溶した状態の合金である。As an aluminum alloy satisfying the 0.2% proof stress and the residual resistance ratio specified in the present invention,
For example, Zn is contained at 50 to 1000 ppm, and the balance is Al
Al-Zn alloy consisting of, Al-Si alloy containing 50 to 150 ppm of Si with the balance being Al, 50 to 4 of Ag
Al-Ag alloy containing 00ppm and the balance Al, C
Al-containing 50 to 300 ppm of u with the balance being Al
Cu alloy, Ce content of 30 to 2000 ppm, balance Al
Binary alloys such as Al-Ce alloys, and Zn,
A multi-component alloy containing at least two of Si, Ag, Cu, and Ce in the above content can be mentioned. That is, in the present invention, the 0.2% proof stress at cryogenic temperature is 4 kg / m.
Any aluminum alloy may be used as long as it has an m 2 and residual resistance ratio of 250 or more. The reason for limiting the amount of additive element in each of the above alloys is that sufficient mechanical strength cannot be obtained below the lower limit, and the residual resistance ratio decreases below the upper limit. In addition, after processing the superconducting wire into a magnet, the magnet may be impregnated with resin such as epoxy resin or the epoxy resin may be semi-cured so that the wire does not move against the electromagnetic force generated by the magnet. In some cases, it is wound to form an electric insulating layer, which is then cured by heat treatment before use. In such a case, Zn50
〜1000ppm and Ag50〜400ppm at the same time, Si10〜50ppm, Cu10〜50ppm
, Or an aluminum alloy containing Si + Cu in an amount of 10 to 50 ppm and the balance being Al. in this case,
10 to 30 at 100 to 150 ° C. to cure the resin
Heat for hours. This heat treatment softens the magnet and reduces the mechanical strength such as 0.2% proof stress. As described above, in addition to Zn and / or Ag as an alloy element, Si1
0-50ppm, Cu10-50ppm, or Si + Cu
Inclusion of 10 to 50 ppm improves the softening temperature of the magnet. In this case, if the addition amount of Si or Cu is less than the lower limit, the effect of improving the softening temperature is insufficient,
If the upper limit is exceeded, the residual resistance ratio will decrease. It should be noted that all of these aluminum alloys are alloys in which the alloy elements are in solid solution in the aluminum matrix.
【００１２】また、本発明のアルミニウム安定化超電導
線は、超電導線または超電導撚線にアルミニウム合金を
一体に熱間押出して被覆して焼鈍線材となし、あるいは
前記のアルミニウム被覆押出材を所定形状に伸延加工し
た後、これを再結晶温度以上の温度で焼鈍して焼鈍線材
となし、この焼鈍線材に減面率３〜６０％の冷間加工を
施して製造される。また、アルミニウム合金に減面率３
〜６０％の冷間加工を施したアルミニウム合金材を超電
導線または超電導撚線に複合してもよい。冷間加工また
は伸延加工には、圧延、引抜き、スエージャー等の任意
の加工法が適用される。In the aluminum-stabilized superconducting wire of the present invention, the superconducting wire or the superconducting stranded wire is integrally hot extruded and coated to form an annealed wire, or the aluminum-coated extruded material is formed into a predetermined shape. After being drawn, it is annealed at a temperature equal to or higher than the recrystallization temperature to form an annealed wire, and the annealed wire is cold-worked at a surface reduction rate of 3 to 60%. In addition, the area reduction rate of aluminum alloy is 3
An aluminum alloy material that has been cold worked to 60% may be combined with a superconducting wire or a superconducting stranded wire. Any working method such as rolling, drawing, swaging, etc. is applied to the cold working or the drawing working.
【００１３】前記冷間加工したアルミニウム合金材を超
電導線または超電導撚線に複合する方法としては、軟ろ
う付けや機械的接合等の任意の複合法が適用される。例
えば、図１（Ａ）に示すアルミニウム安定化超電導線
は、多芯のＣｕ／ＮｂＴｉ超電導線１１にアルミニウム
安定化材１２を半田付けして複合したものである。図１
（Ｂ）に示すアルミニウム安定化超電導線は、Ｃｕ／Ｎ
ｂＴｉ超電導線の撚線１３にアルミニウム安定化材１２
を半田付けして複合し、さらに、これを断面略コの字形
状の銅安定化材１４内に載置して半田付けし、露出した
アルミニウム安定化材１２上に板状体の銅安定化材１５
を半田付けして取り付けたものである。図１（Ｃ）に示
すアルミニウム安定化超電導線は、断面が円形であるＣ
ｕ／ＮｂＴｉ超電導線の撚線１６に断面半円状の溝を有
する２つのアルミニウム安定化材１７を、溝に撚線を嵌
め込むようにして半田付けし、さらに、これに断面略コ
の字形状の２つの銅安定化材１４を被せて半田付けした
ものである。図１（Ｄ）に示すアルミニウム安定化超電
導線は、銅安定化材１８で外周を被覆したＣｕ／Ｎｂ3
Ｓｎ超電導線１９を溝を有するアルミニウム安定化材２
０の溝内に入れて半田付けしたものである。図１（Ｅ）
に示すアルミニウム安定化超電導線は、断面矩形の多芯
のＣｕ／ＮｂＴｉ超電導線１１に断面矩形の溝を有する
２つのアルミニウム安定化材１２を、Ｃｕ／ＮｂＴｉ超
電導線１１が溝に嵌合するようにして載置して全体を圧
延圧着したものである。As a method of compounding the cold-worked aluminum alloy material into a superconducting wire or a superconducting stranded wire, any compounding method such as soft brazing or mechanical joining is applied. For example, the aluminum-stabilized superconducting wire shown in FIG. 1A is a composite of a multi-core Cu / NbTi superconducting wire 11 to which an aluminum stabilizing material 12 is soldered. Figure 1
The aluminum-stabilized superconducting wire shown in (B) is Cu / N.
Aluminum stabilizing material 12 on stranded wire 13 of bTi superconducting wire
Are soldered to form a composite, which is then placed in a copper stabilizing material 14 having a substantially U-shaped cross section and soldered, and copper stabilization of a plate-shaped body is performed on the exposed aluminum stabilizing material 12. Material 15
Is attached by soldering. The aluminum-stabilized superconducting wire shown in FIG. 1C has a circular cross section.
Two aluminum stabilizers 17 each having a groove with a semicircular cross section are soldered to the twisted wire 16 of the u / NbTi superconducting wire so that the twisted wire is fitted in the groove, and further, the aluminum stabilizer 17 having a substantially U-shaped cross section Two copper stabilizing materials 14 are covered and soldered. The aluminum-stabilized superconducting wire shown in FIG. 1 (D) has a Cu / Nb 3 outer periphery coated with a copper stabilizing material 18.
Aluminum stabilizer 2 having Sn superconducting wire 19 as a groove
It was put in the groove of 0 and soldered. Figure 1 (E)
In the aluminum-stabilized superconducting wire shown in FIG. 2, two Cu-NbTi superconducting wires 11 each having a rectangular cross-section are provided in a multi-core Cu / NbTi superconducting wire 11 having a rectangular cross-section so that the Cu / NbTi superconducting wire 11 fits into the groove. Then, the whole is rolled and pressure-bonded.
【００１４】本発明において、超電導線または超電導撚
線にアルミニウム合金を複合する場合、アルミニウム合
金に加えて銅もしくは銅合金を複合してもよい。When a superconducting wire or a superconducting stranded wire is compounded with an aluminum alloy in the present invention, copper or a copper alloy may be compounded in addition to the aluminum alloy.
【００１５】上記において、焼鈍線材に施す冷間加工の
減面率を３〜６０％に限定した理由は、３％未満では４
kg／mm2 以上の０．２％耐力が得られず、強磁場下でア
ルミニウム安定化超電導線に変形が生じ、また６０％を
超えると残留抵抗比が２５０未満に低下してアルミニウ
ム安定化超電導線の熱的・電気的安定性が低下するため
である。In the above, the reason why the area reduction rate of the cold working applied to the annealed wire is limited to 3 to 60% is less than 3% is 4
The 0.2% proof stress of kg / mm 2 or more cannot be obtained, and the aluminum-stabilized superconducting wire is deformed under a strong magnetic field. When it exceeds 60%, the residual resistance ratio decreases to less than 250 and the aluminum-stabilized superconducting wire is reduced. This is because the thermal and electrical stability of the wire is reduced.
【００１６】[0016]
【作用】本発明のアルミニウム安定化超電導線は、アル
ミニウム安定化材として極低温における０．２％耐力が
４kg／mm2 以上の高い機械的強度を有するアルミニウム
合金を用いるので、大型マグネット用導体として使用し
ても電磁力により変形したりすることがない。また、ア
ルミニウム合金の残留抵抗比を、従来の銅安定化材の極
低温における比抵抗に相当する２５０かまたはそれ以上
の値に限定しているので、得られるアルミニウム安定化
超電導線は熱的にも電気的にも安定する。さらに、上記
のような合金元素を微量含有するアルミニウム合金を用
い、これに所定の冷間加工を施すことにより、容易にア
ルミニウム安定化材を製造することができる。The aluminum-stabilized superconducting wire of the present invention uses an aluminum alloy having a high mechanical strength with a 0.2% proof stress at a cryogenic temperature of 4 kg / mm 2 or more as an aluminum stabilizing material, and therefore is used as a conductor for a large magnet. Even if used, it will not be deformed by electromagnetic force. Further, since the residual resistance ratio of the aluminum alloy is limited to a value of 250 or more, which corresponds to the specific resistance of the conventional copper stabilizing material at the cryogenic temperature, the obtained aluminum-stabilized superconducting wire is thermally Also stable electrically. Furthermore, an aluminum stabilizing material can be easily manufactured by using an aluminum alloy containing a trace amount of the above alloy elements and subjecting it to a predetermined cold working.
【００１７】[0017]
【実施例】以下に、本発明を実施例により詳細に説明す
る。EXAMPLES The present invention will be described in detail below with reference to examples.
【００１８】実施例１ 外径２４０mmφ、内径２００mmφの無酸素銅製パイプ内
に、銅マトリクス中にＮｂ−Ｔｉ合金線材を埋め込んだ
単芯超電導線を１２００本充填して複合ビレットとな
し、次いで、この複合ビレットに熱間押出加工を施して
複合押出材を作製し、次いで、この複合押出材に圧延お
よび引抜き加工を施して外径１２mmφの多芯Ｎｂ−Ｔｉ
超電導線材を作製した。次いで、この多芯Ｎｂ−Ｔｉ超
電導線材に伸線加工および時効熱処理を施して３．２mm
φのストランドとなし、これに純度９９．９９９３％の
アルミニウムにＣｕ、Ｓｉ、Ａｇ、ＺｎまたはＣｅのい
ずれかの元素を微量含有させたアルミニウム二元合金を
安定化材としてそれぞれ熱間で押出し被覆して外径２５
mmφのアルミニウム被覆棒材となし、次いで、この各々
の棒材に圧延および伸線加工を施して外径２．１mmφの
伸線材となした。次に、この伸線材を３００℃×１時間
焼鈍してアルミニウム安定化材のアルミニウム合金を再
結晶させて焼鈍線材となし、次いで、これに伸線加工を
施して外径２．０mmφのアルミニウム安定化超電導線
（No. １〜１５）を製造した。Example 1 An oxygen-free copper pipe having an outer diameter of 240 mmφ and an inner diameter of 200 mmφ was filled with 1200 single-core superconducting wires having Nb-Ti alloy wire embedded in a copper matrix to form a composite billet. The composite billet is subjected to hot extrusion processing to produce a composite extruded material, and then the composite extruded material is subjected to rolling and drawing processing to obtain a multi-core Nb-Ti having an outer diameter of 12 mmφ.
A superconducting wire was produced. Next, this multifilamentary Nb-Ti superconducting wire rod was subjected to wire drawing and aging heat treatment to 3.2 mm.
Φ strands are formed, and aluminum binary alloys containing a small amount of Cu, Si, Ag, Zn or Ce in aluminum having a purity of 99.9993% are extruded and coated as a stabilizer by hot extrusion. Outer diameter 25
An aluminum-coated rod having a diameter of mmφ was formed, and then each of the rods was rolled and drawn to obtain a drawn wire having an outer diameter of 2.1 mmφ. Next, this drawn wire material is annealed at 300 ° C. for 1 hour to recrystallize the aluminum alloy of the aluminum stabilizing material to form an annealed wire material, and then wire drawing is applied to this to stabilize aluminum with an outer diameter of 2.0 mmφ. A superconducting wire (No. 1 to 15) was manufactured.
【００１９】なお、二元アルミニウム合金の合金元素含
有量は、Ｃｕは５０〜３００ppm 、Ｓｉは５０〜１５０
ppm 、Ａｇは５０〜４００ppm 、Ｚｎは５０〜１０００
ppm、Ｃｅは３０〜２０００ppm の範囲内で種々に変化
させた。The alloying element content of the binary aluminum alloy is 50 to 300 ppm for Cu and 50 to 150 for Si.
ppm, Ag is 50 to 400 ppm, Zn is 50 to 1000
ppm and Ce were variously changed within the range of 30 to 2000 ppm.
【００２０】比較例１ 安定化材となす二元アルミニウム合金の合金元素含有量
を本発明の範囲外、すなわちＣｕは５０ppm 未満または
３００ppm を超える量、Ｓｉは５０ppm 未満または１５
０ppm を超える量、Ａｇは５０ppm 未満または４００pp
m を超える量、Ｚｎは５０ppm 未満または１０００ppm
を超える量、Ｃｅは３０ppm 未満または２０００ppm を
超える量とした他は、実施例１と同じ方法によりアルミ
ニウム安定化超電導線（No. １６〜２５）を製造した。Comparative Example 1 The content of alloying elements in a binary aluminum alloy used as a stabilizer is outside the range of the present invention, that is, Cu is less than 50 ppm or more than 300 ppm, and Si is less than 50 ppm or 15
More than 0ppm, Ag less than 50ppm or 400pp
more than m, Zn less than 50ppm or 1000ppm
And the Ce content was less than 30 ppm or more than 2000 ppm, except that aluminum-stabilized superconducting wires (Nos. 16 to 25) were manufactured by the same method as in Example 1.
【００２１】比較例２ 安定化材に９９．９９９３％純度の高純度アルミニウム
を用いた他は、実施例１と同じ方法によりアルミニウム
安定化超電導線（No. ２６）を製造した。Comparative Example 2 An aluminum-stabilized superconducting wire (No. 26) was manufactured by the same method as in Example 1 except that high-purity aluminum having a purity of 99.9993% was used as the stabilizing material.
【００２２】このようにして製造した各々のアルミニウ
ム安定化超電導線（No. １〜２６）について、臨界電流
値（以下、Ｉｃと省略する）、マグネット特性としてク
エンチ電流および最大発生磁界、４．２Ｋにおける０．
２％耐力、並びに残留抵抗比を調べた。その結果を下記
表１および表２に示す。なお、Ｉｃは、得られたアルミ
ニウム安定化超電導線を長さ１ｍの短尺材とし、これに
液体Ｈｅ中（４．２Ｋ）にて５Ｔの磁場をかけた状態で
電流を通電し、電流を徐々に増加させて抵抗が１０-11
Ω・cmに達した時の電流値をもって表わした。また、ク
エンチ電流および最大発生磁界は、得られたアルミニウ
ム安定化超電導線を内径２０mm、外径７０mmのコイルに
巻いてマグネットを作製し、クエンチ電流はマグネット
の超電導状態が破れた時の電流とし、最大発生磁界は中
心においたホール素子により測定した。ただし、マグネ
ットは、２７６Ａ通電した時に８Ｔの磁界を発生するよ
うに設計した。With respect to each of the aluminum-stabilized superconducting wires (Nos. 1 to 26) manufactured as described above, the critical current value (hereinafter, abbreviated as Ic), the quench current as the magnet characteristics, and the maximum generated magnetic field, 4.2K. 0.
The 2% proof stress and the residual resistance ratio were examined. The results are shown in Tables 1 and 2 below. In addition, Ic was obtained by using the obtained aluminum-stabilized superconducting wire as a short material with a length of 1 m, and applying a magnetic field of 5 T in liquid He (4.2 K) to this, a current was applied, and the current was gradually increased. The resistance is increased to 10 -11
It was expressed by the current value when it reached Ω · cm. The quench current and the maximum generated magnetic field are obtained by winding the obtained aluminum-stabilized superconducting wire around a coil having an inner diameter of 20 mm and an outer diameter of 70 mm to produce a magnet. The quench current is the current when the superconducting state of the magnet is broken. The maximum generated magnetic field was measured by a Hall element placed at the center. However, the magnet was designed to generate a magnetic field of 8T when energized with 276A.
【００２３】[0023]
【表１】 [Table 1]
【表２】 表１および表２より明らかなように、本発明のアルミニ
ウム安定化超電導線（No. １〜１５）については、Ｉｃ
は比較例品（No. １６〜２６）と同等であったが、マグ
ネット特性は最大発生磁界が８Ｔを超え、またクエンチ
電流も２７０Ａ以上であり高い値を示した。[Table 2] As is clear from Table 1 and Table 2, regarding the aluminum-stabilized superconducting wires (No. 1 to 15) of the present invention, Ic
Was the same as that of the comparative example product (Nos. 16 to 26), but the magnet characteristics showed a high value because the maximum generated magnetic field exceeded 8T and the quench current was 270A or more.
【００２４】これに対し、比較例品No. １６，１８，２
０，２２，２４は、アルミニウム安定化材に用いたアル
ミニウム合金の合金元素含有量が少ないため、またNo.
２６は高純度アルミニウムのため、いずれも機械的強度
が低く、その結果マグネットの発生磁場が６〜７Ｔのと
ころで変形を起こし、その際の発熱により所定の電流値
に達する前にクエンチしてしまった。また、比較例のN
o. １７，１９，２１，２３，２５は、アルミニウム安
定化材に用いたアルミニウム合金の合金元素含有量が多
すぎたため、残留抵抗比が低い値となり、導体としての
熱的・電気的安定性が低下してマグネット特性が低下し
たものとなった。On the other hand, comparative example products No. 16, 18, 2
Nos. 0, 22 and 24 are also No. because the alloying element content of the aluminum alloy used as the aluminum stabilizing material is small.
Since 26 is a high-purity aluminum, all of them have low mechanical strength, and as a result, deformation occurs when the magnetic field generated by the magnet is 6 to 7 T, and the heat generated at that time causes quenching before reaching a predetermined current value. .. In addition, N of the comparative example
o. 17, 19, 21, 23, 25 had a low residual resistance ratio due to the excessive content of alloying elements in the aluminum alloy used as the aluminum stabilizing material, resulting in thermal and electrical stability as a conductor. Deteriorated and the magnet characteristics deteriorated.
【００２５】実施例２ ０．７６mmφのＣｕ／Ｎｂ−Ｔｉ超電導線（２４μｍφ
Ｎｂ−Ｔｉ５００芯、Ｃｕ／Ｎｂ−Ｔｉ比１）１０本を
撚り合わせて撚線を形成し、これに安定化材としてＡｌ
−Ｚｎ合金を熱間で押出被覆して断面寸法２．９mm×３
２mmの焼鈍線材となし、次いで、これを半角３度のダイ
スを通して冷間で引抜き加工を施して、図２に示す超電
導撚線２１の外周にアルミニウム安定化材２２を被覆し
た構造のアルミニウム安定化超電導線２３（No. ２７〜
３０、３４，３５）を製造した。Ａｌ−Ｚｎ合金には９
９．９９９６％の高純度アルミニウムにＺｎを２００pp
m含有したアルミニウム合金を用いた。また、引抜き加
工率は種々に変化させた。Example 2 Cu / Nb-Ti superconducting wire of 0.76 mmφ (24 μmφ
Nb-Ti 500 cores, Cu / Nb-Ti ratio 1) 10 pieces are twisted together to form a twisted wire, and Al is used as a stabilizer for this.
-Zn alloy is hot extrusion coated and cross-sectional dimension is 2.9 mm x 3
2mm annealed wire rod, and then cold drawn through a half-width 3 degree die to stabilize the aluminum with a structure in which the aluminum stabilizing material 22 is coated on the outer circumference of the superconducting stranded wire 21 shown in FIG. Superconducting wire 23 (No. 27-
30, 34, 35) was produced. 9 for Al-Zn alloy
Zn is added to 999996% high-purity aluminum at 200 pp
An aluminum alloy containing m was used. Further, the drawing processing rate was variously changed.
【００２６】一方、１．２mmφのＣｕ／Ｎｂ−Ｔｉ超電
導線（１５μｍφＮｂ−Ｔｉ３０００芯、Ｃｕ／Ｎｂ−
Ｔｉ比１）に安定化材としてＡｌ−Ｚｎ合金を熱間で押
出被覆して外径８mmφの押出素材となし、次いで、これ
に伸線加工を施して外径２．５mmφの線材となし、次い
で、この線材を３００℃×１時間焼鈍して焼鈍線材とな
し、次いで、このアルミニウム被覆線材を冷間で伸線加
工して、図３に示す超電導線３１の外周にアルミニウム
安定化材３２を被覆した構造のアルミニウム安定化超電
導線３３（No. ３１〜３３、３６，３７）を製造した。
Ａｌ−Ｚｎ合金には９９．９９９６％の高純度アルミニ
ウムにＺｎを８００ppm 含有した合金を用いた。また、
伸線加工率は種々に変化させた。On the other hand, 1.2 mmφ Cu / Nb-Ti superconducting wire (15 μmφ Nb-Ti 3000 core, Cu / Nb-
An Al-Zn alloy was hot extruded and coated on the Ti ratio 1) as a stabilizing material to form an extruded material having an outer diameter of 8 mmφ, and then wire drawing was applied to this to form a wire material having an outer diameter of 2.5 mmφ. Next, this wire rod is annealed at 300 ° C. for 1 hour to form an annealed wire rod, and then this aluminum-coated wire rod is subjected to cold wire drawing to form an aluminum stabilizing material 32 on the outer periphery of the superconducting wire 31 shown in FIG. An aluminum-stabilized superconducting wire 33 (No. 31 to 33, 36, 37) having a coated structure was manufactured.
As the Al-Zn alloy, an alloy containing 9 ppm of high purity aluminum of 99.9996% and 800 ppm of Zn was used. Also,
The wire drawing rate was variously changed.
【００２７】このようにして製造した各々のアルミニウ
ム安定化超電導線（No. ２７〜３７）について、アルミ
ニウム安定化材の４．２Ｋにおける０．２％耐力、およ
び残留抵抗比を実施例１と同様にして測定した。その結
果を表３に示す。For each of the aluminum-stabilized superconducting wires (Nos. 27 to 37) thus produced, the 0.2% proof stress at 4.2K and the residual resistance ratio of the aluminum stabilizing material were the same as in Example 1. Was measured. The results are shown in Table 3.
【００２８】[0028]
【表３】 表３より明らかなように、本発明のアルミニウム安定化
超電導線（No. ２７〜３３）は、アルミニウム安定化材
の極低温における０．２％耐力が４ｋｇ／mm2 以上、残
留抵抗比が２５０以上であった。このアルミニウム安定
化超電導線を用いてマグネットを組み立てたところ、設
計通りの発生磁界が得られたことが確認された。[Table 3] As is clear from Table 3, in the aluminum-stabilized superconducting wires (No. 27 to 33) of the present invention, the 0.2% proof stress of the aluminum stabilizer at cryogenic temperature is 4 kg / mm 2 or more, and the residual resistance ratio is 250. That was all. When a magnet was assembled using this aluminum-stabilized superconducting wire, it was confirmed that the generated magnetic field as designed was obtained.
【００２９】これに対し、比較例品のNo. ３４，３６は
アルミニウム安定化材の減面加工率が低すぎて０．２％
耐力が低下し強度的に劣り、またNo. ３５，３７はアル
ミニウム安定化材の減面加工率が高すぎて残留抵抗比が
低下して熱的・電気的安定性に劣り、いずれもマグネッ
ト用導体等として不適当なものであった。On the other hand, in Comparative Examples Nos. 34 and 36, the area-reducing rate of the aluminum stabilizing material was too low and was 0.2%.
The yield strength is lowered and the strength is inferior. In addition, No. 35 and 37 are for magnets, both of which are poor in thermal and electrical stability due to the excessive reduction in area reduction rate of the aluminum stabilizer and the reduction in residual resistance ratio. It was unsuitable as a conductor.
【００３０】実施例３ Ｃｕマトリクス中に２０μｍφのＮｂＴｉフィラメント
を１２００芯埋め込んだ断面寸法が１×２mmの多芯Ｃｕ
／ＮｂＴｉ超電導線（Ｃｕ比１）に、断面寸法が２×８
mmのアルミニウム安定化材を半田付けして図１（Ａ）に
示す形状を有するアルミニウム安定化超電導線（No. ３
８〜８２）を製造した。このアルミニウム安定化材に
は、Ｚｎ、Ｃｕ、Ｓｉ、Ａｇの合金元素のうちの少なく
とも１種を微量含有するアルミニウム合金を種々の加工
率で冷間加工して調製したアルミニウム合金材を用い
た。なお、比較のため、９９．９９９％の高純度アルミ
ニウム材も用いた。Example 3 Multicore Cu having 1200 μm embedded NbTi filament of 20 μmφ in a Cu matrix and having a cross-sectional dimension of 1 × 2 mm
/ NbTi superconducting wire (Cu ratio 1) has a cross-sectional dimension of 2 x 8
1 mm of aluminum stabilizing material is soldered to the aluminum stabilizing superconducting wire (No. 3) having the shape shown in FIG.
8 to 82) were produced. As the aluminum stabilizer, an aluminum alloy material prepared by cold working an aluminum alloy containing a trace amount of at least one of alloying elements of Zn, Cu, Si and Ag at various working rates was used. For comparison, a 99.999% high-purity aluminum material was also used.
【００３１】このようにして製造した各々のアルミニウ
ム安定化超電導線について、アルミニウム安定化材の
４．２Ｋにおける０．２％耐力、および残留抵抗比、並
びにマグネットの最大発生磁界を実施例１と同様にして
測定した。その結果を下記表４および表５に示す。With respect to each of the aluminum-stabilized superconducting wires thus manufactured, the 0.2% proof stress and the residual resistance ratio at 4.2K of the aluminum stabilizer and the maximum magnetic field generated by the magnet were the same as in Example 1. Was measured. The results are shown in Tables 4 and 5 below.
【００３２】[0032]
【表４】 [Table 4]
【表５】 表４および表５より明らかなように、本発明のアルミニ
ウム安定化超電導線（No. ３８〜６５）は、いずれも最
大発生磁界が規格値の８Ｔを超えるものであった。[Table 5] As is clear from Tables 4 and 5, the aluminum-stabilized superconducting wires (Nos. 38 to 65) of the present invention all had a maximum generated magnetic field exceeding the standard value of 8T.
【００３３】これに対して、比較例品（No. ６６，７
０，７４，７８）は減面加工率が低いため、比較例品
（No. ６８，７２，７６，８０）はアルミニウム安定化
材に用いたアルミニウム合金材の合金元素含有量が少な
いため、比較例品（No. ８２）は高純度アルミニウムを
用いたために、いずれも機械的強度が低く、マグネット
に使用した場合に発生磁場が６〜７Ｔで変形し、その際
の発熱により所定の電流値に達する前にクエンチが起き
た。また、比較例品（No. ６７，７１，７５，７９）は
減面加工率が大きすぎたため、比較例品（No. ６９，７
３，７７，８１）はアルミニウム安定化材に用いたアル
ミニウム合金材の合金元素含有量が多いために、いずれ
も残留抵抗比が低い値となり、導体の熱的・電気的安定
性が低下してクエンチを起こし、マグネット特性が低く
なった。On the other hand, comparative example products (No. 66, 7)
0,74,78) has a low surface-reduction rate, and the comparative example products (No. 68, 72, 76, 80) have a small alloying element content of the aluminum alloy material used as the aluminum stabilizing material. Since the example product (No. 82) uses high-purity aluminum, it has low mechanical strength, and when used as a magnet, the generated magnetic field deforms at 6 to 7T, and the heat generated at that time causes the current to reach a predetermined value. A quench occurred before it reached. In addition, the comparative example products (No. 67, 71, 75, 79) had too large a surface-reduction rate, so the comparative example products (No. 69, 7)
3, 77, 81), since the aluminum alloy material used as the aluminum stabilizing material has a large content of alloying elements, the residual resistance ratio is low in all cases, and the thermal and electrical stability of the conductor deteriorates. Quenched and the magnet characteristics deteriorated.
【００３４】実施例４ アルミニウム安定化材に用いたアルミニウム合金材の合
金元素含有量を下記表６に示すように設定すること、１
３０℃×１５時間の加熱処理を加えること、および減面
加工率を１５％とすること以外は実施例１と同様にし
て、アルミニウム安定化超電導線（No. ８３〜１００）
を製造した。Example 4 The alloying element content of the aluminum alloy material used as the aluminum stabilizing material should be set as shown in Table 6 below.
An aluminum-stabilized superconducting wire (No. 83 to 100) was prepared in the same manner as in Example 1 except that the heat treatment was performed at 30 ° C. for 15 hours, and the surface-reduction processing rate was 15%.
Was manufactured.
【００３５】このようにして製造した各々のアルミニウ
ム安定化超電導線について、アルミニウム安定化材の
４．２Ｋにおける０．２％耐力、および残留抵抗比、並
びにマグネットの最大発生磁界を実施例１と同様にして
測定した。その結果を下記表６に示す。With respect to each aluminum-stabilized superconducting wire thus manufactured, the 0.2% proof stress at 4.2K and the residual resistance ratio of the aluminum stabilizer and the maximum generated magnetic field of the magnet were the same as in Example 1. Was measured. The results are shown in Table 6 below.
【００３６】[0036]
【表６】 表６から明らかなように、本発明のアルミニウム安定化
超電導線（No. ８３〜９２）は、いずれも最大発生磁界
が規格値の８Ｔを超えるものであった。[Table 6] As is clear from Table 6, in all of the aluminum-stabilized superconducting wires of the present invention (No. 83 to 92), the maximum generated magnetic field exceeded the standard value of 8T.
【００３７】これに対して、比較例品（No. ９３，９
５，９７，９９）はアルミニウム安定化材に用いたアル
ミニウム合金材の合金元素含有量が少ないために、いず
れも機械的強度が低く、マグネットに使用した場合に発
生磁場が６〜７Ｔで変形し、その際の発熱により所定の
電流値に達する前にクエンチが起きた。また、比較例品
（No. ９４，９６，９８，１００）はアルミニウム安定
化材に用いたアルミニウム合金材の合金元素含有量が多
いために、いずれも残留抵抗比が低い値となり、導体の
熱的・電気的安定性が低下してクエンチを起こし、マグ
ネット特性が低くなった。On the other hand, a comparative example product (No. 93, 9
No. 5,97,99) has a low mechanical strength because the aluminum alloy material used as the aluminum stabilizing material has a small content of alloying elements, and when it is used as a magnet, the generated magnetic field is deformed at 6 to 7T. However, due to the heat generated at that time, quenching occurred before reaching a predetermined current value. In addition, since the comparative example products (No. 94, 96, 98, 100) have a large content of alloying elements in the aluminum alloy material used as the aluminum stabilizing material, the residual resistance ratio is low in all cases, and the heat of the conductor is reduced. The magnetic and electrical stability deteriorated, causing quenching, and the magnet characteristics deteriorated.
【００３８】[0038]
【発明の効果】以上説明した如く本発明のアルミニウム
安定化超電導線は、アルミニウム安定化材が機械的強度
並びに熱的および電気的安定性に優れるため、マグネッ
ト用導体等に用いることにより電磁力により変形するこ
と無く、高い発生磁界が得られる。また、このアルミニ
ウム安定化材は、Ｚｎ、Ｓｉ，Ａｇ，Ｃｕ，Ｃｅ等の合
金元素を微量含有したアルミニウム合金に所定の冷間加
工を施すことにより容易に製造することができる。As described above, the aluminum-stabilized superconducting wire of the present invention has a high mechanical strength and excellent thermal and electrical stability. A high generated magnetic field can be obtained without deformation. Further, this aluminum stabilizing material can be easily manufactured by subjecting an aluminum alloy containing a small amount of alloying elements such as Zn, Si, Ag, Cu and Ce to predetermined cold working.
【図１】（Ａ）〜（Ｅ）は本発明のアルミニウム安定化
超電導線の例を示す横断面図。1A to 1E are cross-sectional views showing examples of an aluminum-stabilized superconducting wire of the present invention.
【図２】本発明のアルミニウム安定化超電導線の他の態
様例を示す横断面図。FIG. 2 is a cross-sectional view showing another embodiment of the aluminum-stabilized superconducting wire of the present invention.
【図３】本発明のアルミニウム安定化超電導線の他の態
様例を示す横断面図。FIG. 3 is a cross-sectional view showing another embodiment of the aluminum-stabilized superconducting wire of the present invention.
１１…Ｃｕ／ＮｂＴｉ超電導線、１２，１７，２０，２
２，３２…アルミニウム安定化材、１３，１６…Ｃｕ／
ＮｂＴｉ超電導線撚線、１４，１５，１８…銅安定化
材、１９…Ｃｕ／Ｎｂ3 Ｓｎ超電導線、２１…超電導撚
線、２３，３３…アルミニウム安定化超電導線、３１…
超電導線。11 ... Cu / NbTi superconducting wire, 12, 17, 20, 2
2, 32 ... Aluminum stabilizer, 13, 16 ... Cu /
NbTi superconducting wire twisted wire, 14, 15, 18 ... Copper stabilizing material, 19 ... Cu / Nb 3 Sn superconducting wire, 21 ... Superconducting twisted wire, 23, 33 ... Aluminum stabilized superconducting wire, 31 ...
Superconducting wire.
フロントページの続き (31)優先権主張番号 特願平3−181921 (32)優先日 平３(1991)６月26日 (33)優先権主張国 日本（ＪＰ） (72)発明者 鈴木 卓哉 東京都千代田区丸の内２丁目６番１号 古 河電気工業株式会社内Continuation of front page (31) Priority claim number Japanese Patent Application No. 3-181921 (32) Priority Day 3 (1991) June 26 (33) Priority claim country Japan (JP) (72) Inventor Takuya Suzuki Tokyo 2-6-1, Marunouchi, Chiyoda-ku, Tokyo Furukawa Electric Co., Ltd.
Claims (2)
埋設してなる超電導線材と、超電導線材の外周に被覆さ
れたアルミニウム安定化部材とを有し、アルミニウム安
定化部材が極低温における０．２％耐力が４kg／mm2 以
上、残留抵抗比が２５０以上であり、５０〜１０００pp
m のＺｎ、５０〜１５０ppm のＳｉ、５０〜４００ppm
のＡｇ、５０〜３００ppm のＣｕ、および３０〜２００
０ppmのＣｅからなる群より選ばれた少なくとも１つを
含有し、残部がＡｌと不可避的不純物であるアルミニウ
ム合金からなることを特徴とするアルミニウム安定化超
電導線。1. A superconducting wire having a superconducting filament embedded in a copper matrix, and an aluminum stabilizing member coated on the outer periphery of the superconducting wire, wherein the aluminum stabilizing member has a 0.2% proof stress at an extremely low temperature. Is 4 kg / mm 2 or more, the residual resistance ratio is 250 or more, 50 to 1000 pp
m of Zn, 50 to 150 ppm of Si, 50 to 400 ppm
Ag, 50-300 ppm Cu, and 30-200
An aluminum-stabilized superconducting wire containing at least one selected from the group consisting of 0 ppm Ce and the balance being Al and an aluminum alloy which is an unavoidable impurity.
設してなる超電導線材と、超電導線材の外周に被覆され
たアルミニウム安定化部材とを有し、アルミニウム安定
化部材が極低温における０．２％耐力が４kg／mm2 以
上、残留抵抗比が２５０以上であり、Ｚｎ５０〜１００
０ppm およびＡｇ５０〜４００ppm の少なく共一つ、並
びにＳｉ１０〜５０ppm、Ｃｕ１０〜５０ppm 、および
Ｓｉ＋Ｃｕ１０〜５０ppm からなる群より選ばれた一つ
を含有し、残部がＡｌおよび不可避的不純物であるアル
ミニウム合金からなることを特徴とするアルミニウム安
定化超電導線。2. A superconducting wire comprising a superconducting filament embedded in a copper matrix, and an aluminum stabilizing member coated on the outer periphery of the superconducting wire, wherein the aluminum stabilizing member has a 0.2% proof stress at an extremely low temperature. Is 4 kg / mm 2 or more, the residual resistance ratio is 250 or more, Zn50-100
0 ppm and Ag of 50 to 400 ppm at the most, and one selected from the group consisting of Si10 to 50 ppm, Cu10 to 50 ppm, and Si + Cu10 to 50 ppm, with the balance being Al and an aluminum alloy which is an unavoidable impurity. An aluminum-stabilized superconducting wire characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4032282A JP2997121B2 (en) | 1991-02-20 | 1992-02-19 | Aluminum stabilized superconducting wire |
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4767791 | 1991-02-20 | ||
| JP13354291 | 1991-05-08 | ||
| JP3-181921 | 1991-06-26 | ||
| JP3-133542 | 1991-06-26 | ||
| JP3-47677 | 1991-06-26 | ||
| JP3-181920 | 1991-06-26 | ||
| JP18192091 | 1991-06-26 | ||
| JP18192191 | 1991-06-26 | ||
| JP4032282A JP2997121B2 (en) | 1991-02-20 | 1992-02-19 | Aluminum stabilized superconducting wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0574235A true JPH0574235A (en) | 1993-03-26 |
| JP2997121B2 JP2997121B2 (en) | 2000-01-11 |
Family
ID=27521404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4032282A Expired - Fee Related JP2997121B2 (en) | 1991-02-20 | 1992-02-19 | Aluminum stabilized superconducting wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2997121B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6255596B1 (en) | 1997-04-25 | 2001-07-03 | Hitachi Cable Ltd. | Aluminum stabilized superconductor with Cu and Mg |
| JP2002162455A (en) * | 2000-09-30 | 2002-06-07 | Varian Inc | Clad metal foil for low-temperature nmr probe rf coil |
| JP2009544113A (en) * | 2006-07-14 | 2009-12-10 | シーメンス マグネット テクノロジー リミテッド | Channel superconductor with built-in wire |
| WO2010016269A1 (en) | 2008-08-08 | 2010-02-11 | 学校法人日本大学 | Pure-aluminum structural material with high specific strength solidified and molded by giant-strain processing method |
| CN109698045A (en) * | 2018-11-07 | 2019-04-30 | 安徽宏源特种电缆集团有限公司 | A kind of high-temperature superconductive cable conductor structure suitable for liquid nitrogen temperature |
| CN114267983A (en) * | 2021-12-24 | 2022-04-01 | 中国科学院合肥物质科学研究院 | Conduction cooling type NbTi superconducting wire joint device and joint manufacturing method thereof |
-
1992
- 1992-02-19 JP JP4032282A patent/JP2997121B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6255596B1 (en) | 1997-04-25 | 2001-07-03 | Hitachi Cable Ltd. | Aluminum stabilized superconductor with Cu and Mg |
| JP2002162455A (en) * | 2000-09-30 | 2002-06-07 | Varian Inc | Clad metal foil for low-temperature nmr probe rf coil |
| JP4510344B2 (en) * | 2000-09-30 | 2010-07-21 | バリアン・インコーポレイテッド | Coated metal foil for low temperature NMR probe RF coil |
| JP2009544113A (en) * | 2006-07-14 | 2009-12-10 | シーメンス マグネット テクノロジー リミテッド | Channel superconductor with built-in wire |
| WO2010016269A1 (en) | 2008-08-08 | 2010-02-11 | 学校法人日本大学 | Pure-aluminum structural material with high specific strength solidified and molded by giant-strain processing method |
| CN109698045A (en) * | 2018-11-07 | 2019-04-30 | 安徽宏源特种电缆集团有限公司 | A kind of high-temperature superconductive cable conductor structure suitable for liquid nitrogen temperature |
| CN114267983A (en) * | 2021-12-24 | 2022-04-01 | 中国科学院合肥物质科学研究院 | Conduction cooling type NbTi superconducting wire joint device and joint manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2997121B2 (en) | 2000-01-11 |
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