JPH1186648A - Aluminum stabilized superconducting conductor - Google Patents
Aluminum stabilized superconducting conductorInfo
- Publication number
- JPH1186648A JPH1186648A JP9247343A JP24734397A JPH1186648A JP H1186648 A JPH1186648 A JP H1186648A JP 9247343 A JP9247343 A JP 9247343A JP 24734397 A JP24734397 A JP 24734397A JP H1186648 A JPH1186648 A JP H1186648A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- superconducting
- stabilized
- superconducting conductor
- conductor
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
- H01F2027/2819—Planar transformers with printed windings, e.g. surrounded by two cores and to be mounted on printed circuit
-
- 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]
【発明の属する技術分野】本発明は、超電導導体に関
し、特に、機械的強度並びに熱的及び電気的安定性に優
れた、超電導マグネットに好適なアルミニウム安定化超
電導導体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconducting conductor, and more particularly, to an aluminum-stabilized superconducting conductor which is excellent in mechanical strength and thermal and electrical stability and is suitable for a superconducting magnet.
【０００２】[0002]
【従来の技術】従来から、超電導マグネットの導体に
は、銅マトリックス中にＮｂ−Ｔｉ合金バー等の超電導
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, as a conductor of a superconducting magnet, a superconducting wire in which a superconducting filament such as an Nb-Ti alloy bar is embedded in a copper matrix has been 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、銅製の管の中にＮｂ−Ｔｉ合金
バーを挿入して複合ビレットとし、静水圧押出でＣｕ／
Ｎｂ−Ｔｉ複合バーを製造し、次いで、伸線加工により
縮径する。更に、Ｃｕ／Ｎｂ−Ｔｉ複合バーを複数本束
ねて再度銅製若しくは銅合金の管の中に充填して複合ビ
レットと成し、前述の工程と同様にして超電導素線を作
成する。次に、この超電導素線を所要数撚合せることに
より超電導線が製造される。[0003] Such a superconducting wire is manufactured, for example, as follows. First, an Nb-Ti alloy bar is inserted into a copper tube to form a composite billet, and Cu /
A Nb-Ti composite bar is manufactured and then reduced in diameter by wire drawing. Further, a plurality of Cu / Nb-Ti composite bars are bundled and filled into a copper or copper alloy tube again to form a composite billet, and a superconducting element wire is prepared in the same manner as in the above-described process. Next, the required number of superconducting wires are twisted to produce a superconducting wire.
【０００４】図５は、この様にして製造された超電導線
を示す。この超電導導体１２は、複数のＣｕ／Ｎｂ−Ｔ
ｉ超電導素線２から成る超電導撚線８の下部にクラッド
被覆材としてＣｕ−２Ｎｉ合金３を使用した純アルミニ
ウム４を設け、これらを安定化銅１で被膜したものであ
る。この様な、構成にすると、機械的強度に優れたもの
となる。FIG. 5 shows a superconducting wire manufactured in this manner. The superconducting conductor 12 has a plurality of Cu / Nb-T
Under the superconducting twisted wire 8 composed of the i superconducting element wire 2, pure aluminum 4 using a Cu-2Ni alloy 3 is provided as a cladding coating material, and these are coated with stabilized copper 1. With such a configuration, the mechanical strength is excellent.
【０００５】また、従来のアルミニウム安定化超電導導
体として、例えば、特開平５−７４２３５号公報に示さ
れるものがある。図６は、この従来のアルミニウム安定
化超電導導体を示す。このアルミニウム安定化超電導導
体１１は、複数のＣｕ／Ｎｂ−Ｔｉ超電導素線２の超電
導撚線８を安定化用アルミニウム合金５で被覆した構成
を有しており、機械的な強度を増すために安定化用アル
ミニウム合金５は、純アルミニウムに所定の量のＣｕ及
びＳｉを添加したものとなっている。A conventional aluminum-stabilized superconducting conductor is disclosed, for example, in Japanese Patent Application Laid-Open No. Hei 5-74235. FIG. 6 shows this conventional aluminum-stabilized superconductor. The aluminum-stabilized superconducting conductor 11 has a configuration in which a superconducting stranded wire 8 of a plurality of Cu / Nb-Ti superconducting wires 2 is covered with an aluminum alloy 5 for stabilization. The stabilizing aluminum alloy 5 is obtained by adding predetermined amounts of Cu and Si to pure aluminum.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、図５に
示したような超電導導体１２によると、安定化材が銅で
あり、また、クラッド材を使用しているので、軽量化や
小型化が困難なものとなっている。However, according to the superconducting conductor 12 as shown in FIG. 5, since the stabilizing material is copper and the cladding material is used, it is difficult to reduce the weight and size. It has become something.
【０００７】また、上記公報で示されたようなアルミニ
ウム安定化超電導導体１１によると、軽量化と小型化は
できるがＣｕ及びＳｉの添加量が適切でないので、機械
的強度と、熱及び電気的な安定性において不十分であ
る。Further, according to the aluminum-stabilized superconducting conductor 11 disclosed in the above publication, the weight and size can be reduced, but the added amounts of Cu and Si are not appropriate, so that the mechanical strength, heat and electrical Inadequate stability.
【０００８】従って、本発明の目的は、軽量化と小型化
を維持しながら、高い機械的強度を有し、熱及び電気的
な安定性を持つアルミニウム安定化超電導導体を提供す
ることである。Accordingly, it is an object of the present invention to provide an aluminum-stabilized superconducting conductor having high mechanical strength, thermal and electrical stability while maintaining a light weight and a small size.
【０００９】[0009]
【課題を解決するための手段】本発明は、以上に述べた
目的を実現するため、銅若しくは銅合金マトリックス中
に超電導フィラメントを埋没した超電導線材と、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
したアルミニウム安定化超電導導体において、アルミニ
ウム安定化部材は、室温における０．２％耐力が４ｋｇ
ｆ／ｍｍ2 以上、残留抵抗比が２５０以上であり、含有
量の和が２０〜１００ｐｐｍのＭｇ及びＣｕを含有し、
残部がＡｌと不可避の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導体
を提供する。In order to achieve the above-mentioned object, the present invention provides a superconducting wire having a superconducting filament buried in a copper or copper alloy matrix, and an aluminum stabilizing material coated on the outer periphery of the superconducting wire. The aluminum-stabilized superconducting conductor having the member and the aluminum-stabilized member has a 0.2% proof stress at room temperature of 4 kg.
f / mm 2 or more, the residual resistance ratio is 250 or more, and the sum of the contents contains 20 to 100 ppm of Mg and Cu,
Provided is an aluminum-stabilized superconducting conductor characterized in that the balance is made of Al and an aluminum alloy that is an unavoidable impurity.
【００１０】[0010]
【発明の実施の形態】以下本発明のアルミニウム安定化
超電導導体について詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The aluminum-stabilized superconductor of the present invention will be described in detail below.
【００１１】図１は本発明によるアルミニウム安定化超
電導導体を示す。このアルミニウム安定化超電導導体
は、以下のようにして製造される。FIG. 1 shows an aluminum-stabilized superconductor according to the present invention. This aluminum-stabilized superconducting conductor is manufactured as follows.
【００１２】先ず、無酸素銅製の管に銅マトリックスＮ
ｂ−Ｔｉ超電導線を約７００本充填して複合ビレットと
し、静水圧押出しにて押出しを行い、更に、時効熱処理
と伸線加工を３回繰り返して、直径０．７４ｍｍのＣｕ
／Ｎｂ−Ｔｉ超電導素線２を作成する。次に、このＣｕ
／Ｎｂ−Ｔｉ超電導素線２を１０本撚合せることにより
厚さ１．３３ｍｍ及び幅３．７ｍｍの平角な超電導撚線
８が生成される。First, a copper matrix N was placed in a tube made of oxygen-free copper.
Approximately 700 b-Ti superconducting wires are filled into a composite billet, extruded by hydrostatic extrusion, and further subjected to aging heat treatment and wire drawing three times to obtain a 0.74 mm diameter Cu.
/ Nb-Ti superconducting element wire 2 is prepared. Next, this Cu
By twisting ten / Nb-Ti superconducting wires 2, a flat superconducting stranded wire 8 having a thickness of 1.33 mm and a width of 3.7 mm is produced.
【００１３】この超電導撚線８に、Ｃｕ及びＭｇ添加ア
ルミニウム合金６を熱間押出にて被膜し、０〜３０％の
冷間加工を施し、本発明の厚さ１０ｍｍ及び幅２０ｍｍ
のアルミニウム安定化超電導導体１０が製造される。こ
こで、Ｃｕ及びＭｇ添加アルミニウム合金６は、純度９
９．９９９％のアルミニウムに１０〜１６０ｐｐｍのＣ
ｕ及びＭｇを添加したものである。This superconducting stranded wire 8 is coated with a Cu and Mg-added aluminum alloy 6 by hot extrusion, subjected to cold working of 0 to 30%, and has a thickness of 10 mm and a width of 20 mm according to the present invention.
The aluminum stabilized superconducting conductor 10 is manufactured. Here, the Cu and Mg-added aluminum alloy 6 has a purity of 9%.
9.999% aluminum to 10-160ppm C
u and Mg are added.
【００１４】次に、アルミニウム被膜後の冷間加工度と
Ｃｕ及びＭｇの添加濃度についての最適条件について説
明する。Next, optimum conditions for the degree of cold working after the aluminum coating and the added concentrations of Cu and Mg will be described.
【００１５】図２は、アルミニウム安定化超電導導体の
冷間加工度についての、超電導撚線と安定化アルミニウ
ムとの界面密着力（界面剪断応力（ｋｇ／ｍｍ2 ））を
測定するための装置の概略図を示す。図２の（ａ）は、
界面剪断応力を測定するアルミニウム安定化超電導導体
１０のサンプル１３の形状を示している。サンプル１３
は、界面剪断応力を測定する個所を残してＣｕ及びＭｇ
添加アルミニウム合金６をアルミニウム安定化超電導導
体１０から除去し、超電導撚線８を露出したものとなっ
ている。図２の（ｂ）は、サンプル１３を引張試験機９
に設置して引張試験を行うことを示す。図に示すよう
に、露出した超電導撚線８を、引張試験機９の孔１４に
通し、Ｃｕ及びＭｇ添加アルミニウム合金６の付いてい
る部分を引張試験機９の内部に納める。引張試験機９の
孔１４から突出した超電導撚線８を図２の（ｂ）の下方
に引張ることによって、各冷間加工度の超電導撚線８と
Ｃｕ及びＭｇ添加アルミニウム合金６との界面剪断応力
（ｋｇ／ｍｍ2 ）を測定する。FIG. 2 shows an apparatus for measuring the interface adhesion force (interface shear stress (kg / mm 2 )) between a superconducting stranded wire and stabilized aluminum with respect to the degree of cold working of an aluminum-stabilized superconducting conductor. FIG. (A) of FIG.
The shape of the sample 13 of the aluminum stabilized superconducting conductor 10 for measuring the interfacial shear stress is shown. Sample 13
Are Cu and Mg except where the interfacial shear stress is measured.
The added aluminum alloy 6 is removed from the aluminum-stabilized superconducting conductor 10 to expose the superconducting stranded wire 8. FIG. 2B shows that the sample 13 was connected to the tensile tester 9.
To perform a tensile test. As shown in the figure, the exposed superconducting stranded wire 8 is passed through the hole 14 of the tensile tester 9, and the portion with the Cu and Mg-added aluminum alloy 6 is placed inside the tensile tester 9. By pulling the superconducting stranded wire 8 protruding from the hole 14 of the tensile tester 9 downward in FIG. 2B, the interfacial shear between the superconducting stranded wire 8 of each degree of cold working and the Cu and Mg-added aluminum alloy 6 is increased. Measure the stress (kg / mm 2 ).
【００１６】表１は、Ｃｕ及びＭｇをそれぞれ４０ｐｐ
ｍ添加した純度９９．９９８％の純アルミニウムを超電
導撚線に被膜して得られたアルミニウム安定化超電導導
体の冷間加工度についての、超電導撚線と安定化アルミ
ニウムとの界面剪断応力（ｋｇ／ｍｍ2 ）を、図２の装
置によって測定した結果を示す。このときの冷間加工度
は０、５、１０、１５、２０、２５、３０、３５、４
０、及び４５％とした。また、この測定は室温で行い、
界面剪断応力は引張力を界面の面積で除した値とした。Table 1 shows that Cu and Mg were each 40 pp.
The interfacial shear stress between the superconducting stranded wire and the stabilized aluminum (kg / kg) for the degree of cold work of the aluminum-stabilized superconducting conductor obtained by coating the superconducting stranded wire with pure aluminum having a purity of 99.998% to which m was added. mm 2 ) is the result of measurement using the apparatus of FIG. The degree of cold working at this time is 0, 5, 10, 15, 20, 25, 30, 35, 4,
0 and 45%. This measurement is performed at room temperature.
The interface shear stress was a value obtained by dividing the tensile force by the area of the interface.
【表１】 [Table 1]
【００１７】表１に示した結果から、冷間加工度が２０
％以下ならば殆ど界面剪断応力は劣化しないが、２０％
を越えた場合には、急激に劣化することが解る。この界
面剪断応力（界面の密着力）は、熱的安定性に関係す
る。この界面剪断応力が小さいと超電導撚線８とＣｕ及
びＭｇ添加アルミニウム合金６の接合状態が不十分な接
合であり、機械的擾乱が生じたときに発生する熱を瞬時
にＣｕ及びＭｇ添加アルミニウム合金６に伝導すること
ができず、超電導撚線８内に熱がこもる時間が長くな
る。これによって、超電導撚線８が超電導状態に復帰す
ることができず、クエンチに至ることが生じる場合があ
る。更に、場合によっては、全くＣｕ及びＭｇ添加アル
ミニウム合金６に熱が伝わらない場合も生じる。From the results shown in Table 1, the degree of cold working was 20
% Or less, the interface shear stress hardly deteriorates, but 20%
It can be seen that when the ratio exceeds the limit, it rapidly deteriorates. This interfacial shear stress (adhesion at the interface) is related to thermal stability. If this interfacial shear stress is small, the joining state of the superconducting stranded wire 8 and the Cu and Mg-added aluminum alloy 6 is insufficient, and the heat generated when mechanical disturbance occurs is instantaneously transferred to the Cu and Mg-added aluminum alloy. 6 cannot be conducted to the superconducting stranded wire 8, and the time for which heat is stored in the superconducting stranded wire 8 becomes long. As a result, the superconducting twisted wire 8 cannot return to the superconducting state, which may result in quench. Further, in some cases, heat may not be transmitted to the Cu and Mg-added aluminum alloy 6 at all.
【００１８】そこで、上記界面剪断応力を測定したもの
と同じロットのサンプルを用いて、単位面積（１ｃ
ｍ2 ）当たりの単位時間当たりに移動する熱量（ｗ）で
ある有効熱流束（ｗ／ｃｍ2 ）を測定した。図３は、熱
流束と温度差の関係を表した図であり、縦軸に熱流束
（ｗ／ｃｍ2 ）、横軸に温度差ΔＴ（Ｋ）をとり、冷却
曲線２０と発熱曲線２１によって示されている。このと
きの有効熱流束は、冷却曲線２０と発熱曲線２１によっ
て示される（１）の面積と（２）の面積が等しくなると
ころの値であり、図３においてｑｅで示される値であ
る。ここで、図３のＴｃは導体の臨界温度から冷媒の温
度を差し引いた値であり、Ｔｓは分流開始温度から冷媒
の温度を差し引いた値である。なお、ここでの磁界は、
５Ｔとした。Therefore, using a sample of the same lot as that in which the interfacial shear stress was measured, a unit area (1c
The effective heat flux (w / cm 2 ), which is the amount of heat (w) transferred per unit time per m 2 ), was measured. FIG. 3 is a graph showing the relationship between the heat flux and the temperature difference. The heat flux (w / cm 2 ) is plotted on the ordinate and the temperature difference ΔT (K) is plotted on the abscissa. It is shown. The effective heat flux at this time is a value at which the area of (1) and the area of (2) indicated by the cooling curve 20 and the heat generation curve 21 become equal, and is a value indicated by qe in FIG. Here, Tc in FIG. 3 is a value obtained by subtracting the temperature of the refrigerant from the critical temperature of the conductor, and Ts is a value obtained by subtracting the temperature of the refrigerant from the branching start temperature. The magnetic field here is
5T.
【００１９】表２は、冷間加工度と有効熱流束の関係を
示す。表２に示されたアルミニウム安定化超電導導体１
０の熱的安定性を表す有効熱流束の結果からも、冷間加
工度が２０％を越えると熱的安定性の劣化が著しくなる
ことが解る。Table 2 shows the relationship between the degree of cold work and the effective heat flux. Aluminum-stabilized superconductor 1 shown in Table 2
From the result of the effective heat flux indicating the thermal stability of 0, it is understood that when the degree of cold working exceeds 20%, the thermal stability is significantly deteriorated.
【表２】 [Table 2]
【００２０】従って、表１及び表２に示した結果から解
るように、機械的強度及び熱的安定性の両面から、熱間
押出による超電導撚線８へのＣｕ及びＭｇ添加アルミニ
ウム合金６の被膜後の冷間加工は２０％以下が望まし
い。Therefore, as can be seen from the results shown in Tables 1 and 2, from the viewpoint of both mechanical strength and thermal stability, the coating of the Cu and Mg-added aluminum alloy 6 on the superconducting stranded wire 8 by hot extrusion. The subsequent cold working is desirably 20% or less.
【００２１】一方、Ｃｕ及びＭｇ添加アルミニウム合金
６の残留抵抗比ＲＲＲは大きい方が望ましく、熱的及び
電気的安定性が充分に得られるためには、ＲＲＲが２５
０以上であることが要求される。ここで、ＲＲＲとは、
室温での抵抗値ρ（ＲＴ）と極低温４．２Ｋでの抵抗値
ρ（４．２Ｋ）の比であり、ＲＲＲ＝ρ（ＲＴ）／ρ
（４．２Ｋ）で表される。また、０．２％耐力は、アル
ミニウム安定化超電導導体１０を大型マグネット用導体
として使用した場合、電磁力によって変形しないために
４ｋｇ／ｍｍ2 以上が必要とされる。表３に、Ｃｕ及び
Ｍｇ添加アルミニウム合金６のＣｕ及びＭｇ含有量と冷
間加工度の関係によるＲＲＲの値および０．２％耐力の
値を示す。このときの冷間加工度は５％とする。On the other hand, it is desirable that the residual resistance ratio RRR of the Cu and Mg-added aluminum alloy 6 is large, and in order to obtain sufficient thermal and electrical stability, the RRR should be 25%.
It is required to be 0 or more. Here, RRR is
It is the ratio of the resistance value ρ (RT) at room temperature to the resistance value ρ (4.2K) at a cryogenic temperature of 4.2K, and RRR = ρ (RT) / ρ
(4.2K). Further, when the aluminum-stabilized superconducting conductor 10 is used as a conductor for a large magnet, the 0.2% proof stress is required to be 4 kg / mm 2 or more in order not to be deformed by an electromagnetic force. Table 3 shows the values of RRR and 0.2% proof stress according to the relationship between the Cu and Mg contents of Cu and Mg-added aluminum alloy 6 and the degree of cold working. At this time, the degree of cold working is 5%.
【表３】 [Table 3]
【００２２】表３において、Ｃｕ及びＭｇの含有量が増
加すれば、０．２％耐力は向上し、逆に、ＲＲＲは低下
する。ＲＲＲと０．２％耐力の両方を満足させるＣｕ及
びＭｇの含有量の範囲は、２０〜１００ｐｐｍであるこ
とが解る。In Table 3, when the content of Cu and Mg increases, the 0.2% proof stress improves, and conversely, the RRR decreases. It turns out that the range of the content of Cu and Mg that satisfies both the RRR and the 0.2% proof stress is 20 to 100 ppm.
【００２３】以上のように、安定化用アルミニウムにＣ
ｕ及びＭｇを添加したことにより、高い機械的強度を有
し、熱及び電気的な安定性を持つアルミニウム安定化超
電導導体を得ることができるようになった。As described above, the stabilizing aluminum is C
The addition of u and Mg makes it possible to obtain an aluminum-stabilized superconductor having high mechanical strength and thermal and electrical stability.
【００２４】以上、本発明の実施形態を示したが、アル
ミニウム安定化超電導導体の断面は、図４に示すような
ものであってもよい。図４の（ａ）〜（ｅ）は、アルミ
ニウム安定化超電導導体の断面を示し、（ａ）は、平角
超電導線２０にアルミニウム合金２１を被膜したもので
あり、（ｂ）は、超電導単線２２にアルミニウム合金２
１を被膜したものである。また、（ｃ）は、平角超電導
線２０にアルミニウム合金２１を軟ろう付けや機械的圧
接で上下に接合したものである。更に、（ｄ）は、アル
ミニウム安定化超電導導体１０に銅シース２３を軟ろう
で被膜したものであり、（ｅ）は、（ｄ）で示されたア
ルミニウム安定化超電導導体１０と銅シース２３の間に
Ｃｕ−２Ｎｉ合金３を介在させたものである。ここで、
アルミニウム合金２１は、Ｃｕ−Ｍｇ添加アルミニウム
合金である。Although the embodiment of the present invention has been described above, the cross section of the aluminum-stabilized superconductor may be as shown in FIG. 4A to 4E show cross sections of an aluminum-stabilized superconducting conductor. FIG. 4A shows a rectangular superconducting wire 20 coated with an aluminum alloy 21, and FIG. 4B shows a superconducting single wire 22. Aluminum alloy 2
1 was coated. (C) shows a flat superconducting wire 20 in which an aluminum alloy 21 is vertically joined by soft brazing or mechanical pressure welding. Further, (d) shows a copper sheath 23 coated on the aluminum-stabilized superconducting conductor 10 with a soft solder, and (e) shows a structure of the aluminum-stabilized superconducting conductor 10 and the copper sheath 23 shown in (d). A Cu-2Ni alloy 3 is interposed between them. here,
The aluminum alloy 21 is a Cu-Mg added aluminum alloy.
【００２５】更に、上述のアルミニウム被膜押出加工後
の冷間加工には、圧延、引抜、スエージャ等の任意の加
工法が適用できる。また、Ｎｂ−Ｔｉ超電導材に換え
て、Ｎｂ3 Ｓｎ系、（ＮｂＴｉ）3 Ｓｎ系、又はＮｂ3
Ａｌ系の超電導材としてもよい。Further, any working method such as rolling, drawing and swaging can be applied to the cold working after the above-mentioned aluminum film extrusion. Further, instead of the Nb-Ti superconducting material, Nb 3 Sn-based, (NbTi) 3 Sn-based, or Nb 3
An Al-based superconducting material may be used.
【００２６】[0026]
【発明の効果】以上述べた通り、本発明のアルミニウム
安定化超電導導体によれば、安定化用アルミニウムにＣ
ｕ及びＭｇを添加したので、軽量化と小型化を維持しな
がら高い機械的強度を有し、且つ、熱及び電気的な安定
性を持つことができるようになった。As described above, according to the aluminum-stabilized superconducting conductor of the present invention, C is added to the stabilizing aluminum.
Since u and Mg are added, it is possible to have high mechanical strength while maintaining weight reduction and miniaturization, and to have thermal and electrical stability.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明によるアルミニウム安定化超電導導体の
断面図。FIG. 1 is a cross-sectional view of an aluminum-stabilized superconducting conductor according to the present invention.
【図２】アルミニウム安定化超電導導体の冷間加工度に
ついての、超電導撚線と安定化アルミニウムとの界面剪
断応力を測定するための装置の概略図。FIG. 2 is a schematic diagram of an apparatus for measuring the interfacial shear stress between a superconducting stranded wire and stabilized aluminum with respect to the degree of cold working of an aluminum-stabilized superconducting conductor.
【図３】熱流束と温度差の関係を表した図。FIG. 3 is a diagram showing a relationship between a heat flux and a temperature difference.
【図４】本発明によるアルミニウム安定化超電導導体の
断面図。FIG. 4 is a sectional view of an aluminum-stabilized superconducting conductor according to the present invention.
【図５】従来のアルミニウム安定化超電導導体の断面
図。FIG. 5 is a cross-sectional view of a conventional aluminum-stabilized superconducting conductor.
【図６】従来のアルミニウム安定化超電導導体の断面
図。FIG. 6 is a cross-sectional view of a conventional aluminum-stabilized superconducting conductor.
１ 安定化銅 ２ Ｃｕ／Ｎｂ−Ｔｉ超電導素線 ３ Ｃｕ−２Ｎｉ合金 ４ 純アルミニウム ５ 安定化アルミニウム ６ Ｃｕ−Ｍｇ添加アルミニウム合金 ８ 超電導撚線 ９ 引張試験機 １０、１１ アルミニウム安定化超電導導体 １２ 超電導導体 １３ サンプル １４ 孔 ２０ 平角超電導線 ２１ アルミニウム合金 ２２ 超電導単線 ２３ 銅シース DESCRIPTION OF SYMBOLS 1 Stabilized copper 2 Cu / Nb-Ti superconducting element wire 3 Cu-2Ni alloy 4 Pure aluminum 5 Stabilized aluminum 6 Cu-Mg addition aluminum alloy 8 Superconducting stranded wire 9 Tensile testing machine 10, 11 Aluminum stabilized superconducting conductor 12 Superconducting Conductor 13 sample 14 hole 20 rectangular superconducting wire 21 aluminum alloy 22 superconducting single wire 23 copper sheath
───────────────────────────────────────────────────── フロントページの続き (72)発明者 菊地 賢一 茨城県土浦市木田余町3550番地 日立電線 株式会社土浦工場内 (72)発明者 岩城 源三 茨城県土浦市木田余町3550番地 日立電線 株式会社システムマテリアル研究所内 (72)発明者 森合 英純 茨城県土浦市木田余町3550番地 日立電線 株式会社システムマテリアル研究所内 (72)発明者 安田 均 茨城県つくば市北原６ 住友化学工業株式 会社内 (72)発明者 高橋 明彦 茨城県つくば市北原６ 住友化学工業株式 会社内 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Kenichi Kikuchi 3550 Kida Yomachi, Tsuchiura City, Ibaraki Prefecture Within Hitachi Cable Co., Ltd. (72) Inventor Genzo Iwaki 3550 Kida Yomachi, Tsuchiura City, Ibaraki Prefecture Hitachi Cable Co., Ltd. (72) Inventor Hidezumi Moriai 3550 Kida Yomachi, Tsuchiura City, Ibaraki Prefecture Hitachi Cable System Materials Laboratory Co., Ltd. (72) Inventor Hitoshi Yasuda 6 Kitahara, Tsukuba City, Ibaraki Sumitomo Chemical Co., Ltd. 72) Inventor Akihiko Takahashi 6 Kitahara, Tsukuba, Ibaraki Pref. Within Sumitomo Chemical Co., Ltd.
Claims (3)
導フィラメントを埋没した超電導線材と、前記超電導線
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
たアルミニウム安定化超電導導体において、 前記アルミニウム安定化部材は、室温における０．２％
耐力が４ｋｇｆ／ｍｍ 2 以上、残留抵抗比が２５０以上
であり、含有量の和が２０〜１００ｐｐｍのＭｇ及びＣ
ｕを含有し、残部がＡｌと不可避の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
化超電導導体。1. A superconductor in a copper or copper alloy matrix.
A superconducting wire having a conducting filament embedded therein, and the superconducting wire
An aluminum stabilizing member coated on the outer periphery of the material
The aluminum-stabilized superconducting conductor, wherein the aluminum-stabilizing member is 0.2% at room temperature.
4kgf / mm proof stress TwoAbove, the residual resistance ratio is 250 or more
Mg and C having a total content of 20 to 100 ppm
aluminum containing u and the balance being Al and inevitable impurities
Aluminum stable characterized by consisting of an aluminum alloy
Superconducting conductor.
有量が１０ｐｐｍ以上、且つ前記Ｍｇの含有量が１０ｐ
ｐｍ以上である、請求項１記載のアルミニウム安定化超
電導導体。2. The aluminum alloy according to claim 1, wherein the Cu content is 10 ppm or more, and the Mg content is 10 p.
The aluminum-stabilized superconductor according to claim 1, which is not less than pm.
冷間加工が施された、請求項１記載のアルミニウム安定
化超電導導体。3. The aluminum-stabilized superconducting conductor according to claim 1, wherein said aluminum alloy is subjected to a cold working of 5 to 20%.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24734397A JP3472452B2 (en) | 1997-09-11 | 1997-09-11 | Aluminum stabilized superconducting conductor |
| EP98303108A EP0874407B1 (en) | 1997-04-25 | 1998-04-22 | Aluminum stabilized superconductor |
| DE69836933T DE69836933T2 (en) | 1997-04-25 | 1998-04-22 | Aluminum stabilized superconductor |
| US09/064,836 US6255596B1 (en) | 1997-04-25 | 1998-04-23 | Aluminum stabilized superconductor with Cu and Mg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24734397A JP3472452B2 (en) | 1997-09-11 | 1997-09-11 | Aluminum stabilized superconducting conductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1186648A true JPH1186648A (en) | 1999-03-30 |
| JP3472452B2 JP3472452B2 (en) | 2003-12-02 |
Family
ID=17162006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24734397A Expired - Fee Related JP3472452B2 (en) | 1997-04-25 | 1997-09-11 | Aluminum stabilized superconducting conductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3472452B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007214121A (en) * | 2006-01-16 | 2007-08-23 | National Institutes Of Natural Sciences | Composite superconductor |
| KR101449531B1 (en) * | 2007-03-29 | 2014-10-13 | 루바타 에스푸 오와이 | Multi-Stabilized NbTi Composite Superconducting Wire |
| US9105795B2 (en) | 2006-01-16 | 2015-08-11 | Inter-University Research Institute Corporation National Institutes Of Natural Sciences | Composite superconductor |
| KR20200042971A (en) * | 2018-10-16 | 2020-04-27 | 삼성디스플레이 주식회사 | Display panel and fabricating method of the same |
| CN116741459A (en) * | 2023-07-05 | 2023-09-12 | 广东中实金属有限公司 | Preparation method of ultra-large copper grooved wire for superconducting cable |
| CN118609905A (en) * | 2024-08-08 | 2024-09-06 | 西安聚能超导线材科技有限公司 | A NbTi superconducting wire and a method for preparing the same |
-
1997
- 1997-09-11 JP JP24734397A patent/JP3472452B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007214121A (en) * | 2006-01-16 | 2007-08-23 | National Institutes Of Natural Sciences | Composite superconductor |
| US9105795B2 (en) | 2006-01-16 | 2015-08-11 | Inter-University Research Institute Corporation National Institutes Of Natural Sciences | Composite superconductor |
| KR101449531B1 (en) * | 2007-03-29 | 2014-10-13 | 루바타 에스푸 오와이 | Multi-Stabilized NbTi Composite Superconducting Wire |
| KR20200042971A (en) * | 2018-10-16 | 2020-04-27 | 삼성디스플레이 주식회사 | Display panel and fabricating method of the same |
| CN116741459A (en) * | 2023-07-05 | 2023-09-12 | 广东中实金属有限公司 | Preparation method of ultra-large copper grooved wire for superconducting cable |
| CN116741459B (en) * | 2023-07-05 | 2024-01-02 | 广东中实金属有限公司 | Preparation method of copper grooved wire for superconducting cable |
| CN118609905A (en) * | 2024-08-08 | 2024-09-06 | 西安聚能超导线材科技有限公司 | A NbTi superconducting wire and a method for preparing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3472452B2 (en) | 2003-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0500101A1 (en) | Aluminum-stabilized superconducting wire | |
| KR20190037365A (en) | Diffusion barrier for metallic superconducting wire | |
| US3910802A (en) | Stabilized superconductors | |
| US3502789A (en) | Superconductor cable | |
| JPH1186648A (en) | Aluminum stabilized superconducting conductor | |
| US20120083415A1 (en) | Process of superconducting wire and superconducting wire | |
| JP2009231201A (en) | NbTi-BASED SUPERCONDUCTING WIRE MATERIAL AND ITS MANUFACTURING METHOD | |
| US6255596B1 (en) | Aluminum stabilized superconductor with Cu and Mg | |
| Koike et al. | Fabrication of multifilament Nb3Sn conductors | |
| JPH10302556A (en) | Aluminum stabilized superconducting conductor | |
| JP2997121B2 (en) | Aluminum stabilized superconducting wire | |
| JPH0365638B2 (en) | ||
| EP1577903A1 (en) | PROCESS FOR PRODUCING Nb sb 3 /sb Al SUPERCONDUCTIVE WIRE ROD AND Nb sb 3 /sb Al SUPERCONDUCTIVE WIRE ROD PRODUCED BY THE PROCESS | |
| EP1780812A2 (en) | Internal diffusion process Nb3Sn superconducting wire | |
| Fast et al. | Electrical and mechanical properties of lead/tin solders and splices for superconducting cables | |
| US20030029629A1 (en) | Methods for joining high temperature superconducting components in a superconducting cable with negligible critical current degradation and articles of manufacture in accordance therewith | |
| Randall et al. | Fabrication and properties of multifilament Nb 3 Sn conductors | |
| US4860431A (en) | Fabrication of multifilament intermetallic superconductor using strengthened tin | |
| JP2002163944A (en) | Aluminum stabilized superconducting wire and superconducting conductor | |
| JPH11353961A (en) | Precursor wire for Nb3Sn compound superconductor and method for producing the same, method for producing Nb3Sn compound superconductor, and method for producing Nb3Sn compound superconducting coil | |
| Kanithi et al. | Development and characterization of aluminum clad superconductors | |
| Elen et al. | Upgrade of the Sultan Superconducting Test Facility to 12 tesla by three A-15 coils | |
| Lombardo et al. | Production of aluminum stabilized superconducting cable for the Mu2e transport solenoid | |
| JPH10321060A (en) | Aluminum stabilized superconducting wire | |
| JP3445332B2 (en) | Manufacturing method of superconducting cable in conduit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070912 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080912 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090912 Year of fee payment: 6 |
|
| LAPS | Cancellation because of no payment of annual fees |