JPH0594723A - Nb-ti alloy superconductive wire rod - Google Patents
Nb-ti alloy superconductive wire rodInfo
- Publication number
- JPH0594723A JPH0594723A JP3276453A JP27645391A JPH0594723A JP H0594723 A JPH0594723 A JP H0594723A JP 3276453 A JP3276453 A JP 3276453A JP 27645391 A JP27645391 A JP 27645391A JP H0594723 A JPH0594723 A JP H0594723A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- wire
- weight
- billet
- filament
- 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
- 229910001069 Ti alloy Inorganic materials 0.000 title claims description 5
- 239000000956 alloy Substances 0.000 claims abstract description 43
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 42
- 229910020012 Nb—Ti Inorganic materials 0.000 claims abstract description 21
- 229910017566 Cu-Mn Inorganic materials 0.000 claims abstract description 9
- 229910017871 Cu—Mn Inorganic materials 0.000 claims abstract description 9
- 229910003286 Ni-Mn Inorganic materials 0.000 claims abstract description 8
- 229910002482 Cu–Ni Inorganic materials 0.000 claims abstract 4
- 239000010949 copper Substances 0.000 abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 238000005491 wire drawing Methods 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 8
- 229910000990 Ni alloy Inorganic materials 0.000 description 7
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 4
- 239000010953 base metal Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002887 superconductor Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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】この発明は、交流モードで運転さ
れる機器に用いられる超電導線材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconducting wire used in equipment operated in an AC mode.
【０００２】[0002]
【従来の技術】現状の超電導マグネットは、その殆どが
直流モードで運転されるようになっている。これは、通
常の銅（Ｃｕ）安定化Ｎｂ−Ｔｉ合金超電導線材におけ
る交流モード運転時の交流損失が非常に大きいからであ
る。2. Description of the Related Art Most of current superconducting magnets are designed to be operated in a direct current mode. This is because the ordinary copper (Cu) -stabilized Nb-Ti alloy superconducting wire has a very large AC loss during AC mode operation.
【０００３】超電導線の交流損失は、「ヒステリシス損
失」，「結合損失」および「渦電流損失」の３成分の和
からなっている。この３つの損失のうち結合損失と渦電
流損失は、導体断面の幾何学的構造や安定化銅をＣｕ−
Ｎｉ合金の高抵抗層で分割することによりかなり低減さ
せることができる。The AC loss of the superconducting wire is composed of the sum of three components of "hysteresis loss", "coupling loss" and "eddy current loss". Of these three losses, the coupling loss and the eddy current loss are Cu-
It can be significantly reduced by splitting with a high resistance layer of Ni alloy.
【０００４】しかし、ヒステリシス損失は、超電導体の
ピンニング力に起因するものであり、高い電流密度を有
する超電導線ほどピンニング力が大きいため、超電導体
のヒステリシス損失が大きくなる。つまり、超電導の大
きな利点である高い電流密度を保ちながらヒステリシス
損失を低減させることは、相反することがらとなる。一
般に、ヒステリシス損失は、超電導線の臨界電流密度と
フィラメント径の積に比例する。However, the hysteresis loss is caused by the pinning force of the superconductor, and the superconducting wire having a higher current density has a larger pinning force, so that the hysteresis loss of the superconductor becomes larger. That is, reducing the hysteresis loss while maintaining a high current density, which is a great advantage of superconductivity, becomes a conflict. Generally, the hysteresis loss is proportional to the product of the critical current density of the superconducting wire and the filament diameter.
【０００５】そのため、高電流密度，低ヒステリシス損
失の超電導線を作製するには、フィラメント径を小さく
することが望ましい。このため、直流用の超電導線のフ
ィラメント径が数μｍ〜数十μｍなのに対し、交流用の
それはサブミクロンあるいは０．１μｍ以下の細さとな
り、直流用の数十分の１の細さとなる。Therefore, in order to manufacture a superconducting wire having high current density and low hysteresis loss, it is desirable to reduce the filament diameter. Therefore, while the filament diameter of the superconducting wire for DC is several μm to several tens of μm, that for AC is submicron or 0.1 μm or less, which is several tenths of a minute for DC.
【０００６】図２に直流用と交流用のフィラメントサイ
ズの違いを断面図に示す。即ち、（Ａ）は従来のフィラ
メント径が数μｍ〜数十μｍのものであり、ヒステリシ
ス損失が大きい。（Ｂ）は交流用のフィラメント径１μ
ｍ以下のものである。Ｎｂ−Ｔｉ合金の占積率が減少し
て臨界電流密度が低下している。（Ｃ）はフィラメント
間隔を狭めることにより近接効果を出現させたものであ
る。FIG. 2 is a sectional view showing the difference between the filament sizes for DC and AC. That is, (A) has a conventional filament diameter of several μm to several tens of μm, and has a large hysteresis loss. (B) is a filament diameter for AC of 1μ
m or less. The space factor of the Nb-Ti alloy decreases and the critical current density decreases. In (C), the proximity effect appears by narrowing the filament interval.
【０００７】このように、高電流密度を保ちながらフラ
メント径を小さくしていくと、フィラメント間隔が非常
に狭くなる。Ｎｂ−Ｔｉフィラメントから滲み出してく
る超電導電子により、隣り合うフィラメント同士が電気
的に結合し、フィラメント周りの母材金属部分にも超電
導電流が流れ、実質的にフイラメント径が太くなったよ
うな状態となる。これを近接効果という。この近接効果
によりフィラメント同士が電気的に結合するとヒステリ
シス損失が増大してしまう。As described above, when the fragment diameter is reduced while maintaining the high current density, the filament spacing becomes very narrow. A state in which adjacent filaments are electrically coupled to each other by the superconducting conductor that oozes out from the Nb-Ti filament, and the superconducting current also flows to the base metal part around the filament, which substantially enlarges the filament diameter. Becomes This is called the proximity effect. When the filaments are electrically coupled to each other due to this proximity effect, the hysteresis loss increases.
【０００８】現在、近接効果によるフィラメント同士の
電気的結合を防ぐため、母材金属を従来用いられていた
Ｃｕ−１０重量％Ｎｉ合金からＣｕ−３０重量％Ｎｉ合
金に代えてより高抵抗化したり、Ｃｕ−１０重量％Ｎｉ
合金の代わりに磁性元素Ｍｎを含んだＣｕ−Ｍｎ合金を
用いることでフィラメント間隔を広げずに高い臨界電流
を保っている。At present, in order to prevent electrical coupling between filaments due to the proximity effect, the base metal is replaced with Cu-30 wt% Ni alloy, which has been conventionally used, from Cu-30 wt% Ni alloy to have higher resistance. , Cu-10% by weight Ni
By using a Cu-Mn alloy containing the magnetic element Mn instead of the alloy, a high critical current is maintained without widening the filament spacing.
【０００９】[0009]
【発明が解決しようとする課題】前述したように、Ｃｕ
−３０重量％Ｎｉ合金あるいはＣｕ−Ｍｎ合金を用いる
ことにより、近接効果によるフィラメント同士の電気的
結合を防止することができ、ヒステリシス損失を低減さ
せ、高い臨界電流密度を有する超電導線を作製すること
が可能になる。しかし、実用化レベルの値にはまだ達し
ておらず、より一層の低ヒステリシス損失化と高電流密
度化が望まれている。As described above, Cu
By using -30 wt% Ni alloy or Cu-Mn alloy, it is possible to prevent electrical coupling between filaments due to proximity effect, reduce hysteresis loss, and manufacture a superconducting wire having a high critical current density. Will be possible. However, the value has not yet reached the level of practical use, and further lower hysteresis loss and higher current density are desired.
【００１０】現在、加工技術の発達によりＮｂ−Ｔｉ合
金フィラメント径が０．０５μｍ以下の超電導線も作製
することが可能になった。しかし、いくら母材金属に上
記Ｃｕ−３０重量％Ｎｉ合金やＣｕ−Ｍｎ合金を用いた
としても、近接効果の低減作用には限度があり、フィラ
メント径を細くすることによるヒステリシス損失の低減
には限界がある。At present, it has become possible to manufacture a superconducting wire having a Nb-Ti alloy filament diameter of 0.05 μm or less by the development of processing technology. However, no matter how much the Cu-30 wt% Ni alloy or Cu-Mn alloy is used as the base metal, there is a limit to the effect of reducing the proximity effect, and the hysteresis loss can be reduced by reducing the filament diameter. There is a limit.
【００１１】そのため、Ｎｂ−Ｔｉフィラメント１本１
本の臨界電流密度をヒステリシス損失を増大させること
なく高くしてやる必要がある。もし、Ｎｂ−Ｔｉ合金フ
ィラメントの臨界電流密度が高くなれば、超電導線の断
面積を小さくすることができ、その結果、単位体積当り
のヒステリシス損失は低減できなくとも、超電導線の体
積が減少するため、機器全体の損失も減少することにな
る。Therefore, one Nb-Ti filament is used.
It is necessary to increase the critical current density of the book without increasing the hysteresis loss. If the critical current density of the Nb-Ti alloy filament becomes high, the cross-sectional area of the superconducting wire can be made small. As a result, the volume of the superconducting wire is reduced even if the hysteresis loss per unit volume cannot be reduced. Therefore, the loss of the entire device is also reduced.
【００１２】この発明の目的は、上記した従来の超電導
線のＮｂ−Ｔｉ合金フィラメント周りの構造を改良し、
低ヒステリシス損失を維持しつつ、高臨界電流密度を有
する超電導線を提供することにある。An object of the present invention is to improve the structure around the Nb-Ti alloy filament of the conventional superconducting wire described above,
It is to provide a superconducting wire having a high critical current density while maintaining a low hysteresis loss.
【００１３】[0013]
【課題を解決するための手段および作用】この発明の要
旨は、Ｎｂ−Ｔｉ合金フィラメントの周り、また、それ
に加えてフィラメントの中心部にもＮｂ層を配置し、こ
の周りにＣｕ−Ｍｎ合金あるいはＣｕ−Ｎｉ−Ｍｎ合金
を配置することにある。これにより、まずＮｂ層でＮｂ
−Ｔｉ合金フィラメントから滲み出してきた超電導電子
により、フィラメントの表面で磁束をピン止めして、磁
界中での臨界電流密度を上昇させ、Ｎｂ層の周りに配置
したＣｕ−Ｍｎ合金層あるいはＣｕ−Ｎｉ−Ｍｎ合金層
により、近接効果によるフィラメントの電気的結合を防
ぎ、ヒステリシス損失の増大を抑えている。SUMMARY OF THE INVENTION The gist of the present invention is to arrange an Nb layer around an Nb-Ti alloy filament, and in the center of the filament in addition to the Cu-Mn alloy or It is to arrange a Cu-Ni-Mn alloy. As a result, first the Nb layer
-The superconducting conductor exuding from the Ti alloy filament pins the magnetic flux on the surface of the filament to increase the critical current density in the magnetic field, and the Cu-Mn alloy layer or the Cu-Mn alloy layer arranged around the Nb layer. The Ni-Mn alloy layer prevents electrical coupling of filaments due to the proximity effect and suppresses an increase in hysteresis loss.
【００１４】[0014]
【実施例】以下、図面に基づいてこの発明の実施例を説
明する。図１は線材の断面構造を示す断面図で、一部素
線を引き出して拡大して示している。即ち、Ｎｂ−Ｔｉ
合金素材１として、Ｎｂ−４５重量％Ｔｉ材を用い、こ
のＮｂ−Ｔｉ合金の棒を第１表に示すような被覆材２と
複合化し、それぞれ温間にて外径約２９ｍｍの押出用ビ
レットとした。この押出用ビレットをそれぞれ温間にて
外径１２ｍｍに静水圧押出をした後、それぞれ引抜伸線
し、対辺距離が１．３９ｍｍの六角断面を有するシング
ル線とした。このシングル線を所定の長さに切断したも
のを２５３本をそれぞれ外径が約２８ｍｍのＣｕ−１０
重量％Ｎｉ製の管４内に挿入組立てしてそれぞれ押出用
ビレットとした。この押出用ビレットをそれぞれ静水圧
押出して外径約１２ｍｍとした後、引抜伸線して対辺距
離が１．３９ｍｍの六角断面を有するサブマルチ線とし
た。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a cross-sectional structure of a wire rod, in which a part of a wire is drawn and enlarged. That is, Nb-Ti
An Nb-45% by weight Ti material was used as the alloy material 1, and a bar of this Nb-Ti alloy was compounded with a coating material 2 as shown in Table 1, and each extrusion billet having an outer diameter of about 29 mm was warmed. And Each of the extrusion billets was hydrostatically extruded to an outer diameter of 12 mm while warm, and then drawn and drawn to obtain a single wire having a hexagonal cross section with an opposite side distance of 1.39 mm. This single wire is cut into a predetermined length, and 253 pieces are cut into Cu-10 each having an outer diameter of about 28 mm.
A billet for extrusion was prepared by inserting and assembling into a tube 4 made of Ni by weight. Each of the extrusion billets was hydrostatically extruded to have an outer diameter of about 12 mm, and then drawn and drawn to obtain a sub-multi wire having a hexagonal cross section with an opposite side distance of 1.39 mm.
【００１５】[0015]
【表１】 [Table 1]
【００１６】次に、そのサブマルチ線を所定の長さに切
断したもの１９８本と、このサブマルチ線と同サイズの
Ｃｕ−１０重量％Ｎｉ合金被覆銅線からなるダミー線の
５５本をＣｕ−１０重量％Ｎｉ合金製の管４に挿入組立
し、それぞれ押出しビレットとした。この押出しビレッ
トをそれぞれ静水圧押出して外径約１２ｍｍに加工し
た。Next, 198 sub-multi wires cut into a predetermined length and 55 dummy wires consisting of Cu-10 wt% Ni alloy-coated copper wires of the same size as the sub-multi wires are Cu-10. The tubes 4 made of a Ni alloy having a weight% were inserted and assembled into extruded billets. Each of the extruded billets was hydrostatically extruded to have an outer diameter of about 12 mm.
【００１７】得られた各線材について、それぞれ数回の
引抜伸線した後、ツイスト加工し、それぞれ外径０．１
ｍｍ，Ｎｂ−Ｔｉ合金フィラメント径０．２ｍｍ，ツイ
ストピッチ０．８ｍｍの線材とし試料とした。Each of the obtained wire rods was drawn and drawn several times, and then twisted to have an outer diameter of 0.1.
mm, Nb—Ti alloy filament diameter 0.2 mm, twist pitch 0.8 mm, and a sample was used.
【００１８】第２表に、以上のようにして作製した４種
類の線材の試料の断面構成比、臨界電流密度およびＳＱ
ＵＩＤ型磁束計で測定した±０．５Ｔ１サイクル当たり
のヒステリシス損失を示した。Table 2 shows the cross-sectional composition ratios, critical current densities and SQs of the four types of wire rod samples produced as described above.
The hysteresis loss per ± 0.5T 1 cycle measured by the UID type magnetometer is shown.
【００１９】[0019]
【表２】 [Table 2]
【００２０】臨界電流密度は試料番号４−試料番号３−
試料番号２−試料番号１の順で増加し、試料番号１の
０．５Ｔでの臨界電流密度は試料番号４の約１．７倍に
達した。一方、ヒステリシス損失は試料番号４−試料番
号３−試料番号２−試料番号１の順で増加し、試料番号
１のヒステリシス損失は試料番号４の約１．５倍となっ
た。The critical current density is sample number 4-sample number 3-
Sample No. 2 to Sample No. 1 increased in order, and the critical current density at 0.5 T of Sample No. 1 reached about 1.7 times that of Sample No. 4. On the other hand, the hysteresis loss increased in the order of sample number 4-sample number 3-sample number 2-sample number 1, and the hysteresis loss of sample number 1 was about 1.5 times that of sample number 4.
【００２１】以上の結果から、試料番号１は高い電流密
度を有するが、ヒステリシス損失は試料番号２，試料番
号３に関しては両者（試料番号１と試料番号４）の中間
の値をとることが分かった。From the above results, it was found that sample No. 1 has a high current density, but hysteresis loss takes an intermediate value between sample No. 2 and sample No. 3 (sample No. 1 and sample No. 4). It was
【００２２】次に、図３（Ｂ）に示すように、Ｎｂ−Ｔ
ｉ合金フィラメント１１の中心部にもＮｂ層１２を配置
した構造を有する線材を形成した。この線材についても
同様に測定した結果、フィラメント１１の周りのみにＮ
ｂ層１２を配置した図３（Ａ）に示す上記構造のものに
比べ１０％ほどヒシテリシス損失が増加したが、ほぼ同
様の結果がえられた。Next, as shown in FIG. 3B, Nb-T
A wire having a structure in which the Nb layer 12 was arranged also at the center of the i alloy filament 11 was formed. This wire was also measured in the same manner, and as a result, N was found only around the filament 11.
Compared to the structure shown in FIG. 3A in which the b layer 12 is arranged, the hysteresis loss increased by about 10%, but almost the same result was obtained.
【００２３】この発明の変形例として、上記の実施例で
の試料番号２にあたるＮｂ層を銅に置き換えるものを作
製した。また、実施例でのＮｂ層を４．２Ｋ以上の臨界
温度をもつ金属、例えば、バナジウム（Ｖ）、鉛（Ｐ
ｂ）などで置き換えたものでもよい。これらの場合も実
施例とほぼ同様の結果がえられた。以上の他に、超電導
電子が滲み出し易いもの、低抵抗金属でＮｂ層と置き換
えたものでもほぼ同様の結果がえられた。As a modified example of the present invention, the one in which the Nb layer corresponding to the sample No. 2 in the above-mentioned embodiment is replaced with copper was produced. In addition, the Nb layer in the embodiment is made of a metal having a critical temperature of 4.2 K or higher, such as vanadium (V) or lead (P).
It may be replaced with b) or the like. In these cases, almost the same results as in the example were obtained. In addition to the above, almost the same results were obtained even when the superconducting conductor was easily exuded and when the Nb layer was replaced with a low resistance metal.
【００２４】[0024]
【発明の効果】以上説明したとおり、この発明のＮｂ−
Ｔｉ合金超電導線材によれば、Ｎｂ−Ｔｉ合金フィラメ
ントの周りに配置した場合、Ｎｂ層の代わりにＣｕ−Ｎ
ｉ合金層やＣｕ−Ｎｉ−Ｍｎ合金層を配置するよりも、
高い臨界電流密度が得られた。しかも、臨界電流密度の
増加率が単位体積当たりのヒステリシス損失の増加率を
上回るために、同一長さで同じ臨界電流密度を有する超
電導線を試料番号１と試料番号２で作製した場合、試料
番号１の構造を有する超電導線のほうが線材の断面積を
小さくでき、なおかつ線材全体のヒステリシス損失も小
さくできる。また、断面積が小さいということは、超電
導線の使用量も少なくて済み、線材の冷却能力も向上す
る。その上、結合損失、渦電流損失は、線の直径に比例
するために、結合損失および渦電流損失も小さくするこ
とができる。As described above, according to the present invention, the Nb-
According to the Ti alloy superconducting wire, when arranged around the Nb-Ti alloy filament, Cu-N is used instead of the Nb layer.
Rather than disposing an i alloy layer or a Cu-Ni-Mn alloy layer,
A high critical current density was obtained. In addition, when the superconducting wires having the same length and the same critical current density are produced in Sample No. 1 and Sample No. 2 because the increase rate of the critical current density exceeds the increase rate of the hysteresis loss per unit volume, The superconducting wire having the structure No. 1 can reduce the cross-sectional area of the wire, and also reduce the hysteresis loss of the wire as a whole. In addition, the small cross-sectional area means that the amount of superconducting wire used is small and the cooling capacity of the wire is improved. Moreover, since the coupling loss and the eddy current loss are proportional to the diameter of the wire, the coupling loss and the eddy current loss can be reduced.
【図１】この発明のＮｂ−Ｔｉ合金超電導線材の一実施
例の構成を示す断面図、FIG. 1 is a sectional view showing the structure of an embodiment of an Nb-Ti alloy superconducting wire according to the present invention,
【図２】（Ａ），（Ｂ），（Ｃ）は、直流用と交流用の
フィラメントサイズの違いを説明するための断面図、2A, 2B, and 2C are cross-sectional views for explaining the difference in filament size for direct current and for alternating current;
【図３】（Ａ）（Ｂ）は、実施例のフィラメントの構成
を示す断面図である。3A and 3B are cross-sectional views showing the structure of the filament of the example.
１，１１ Ｎｂ−Ｔｉ合金フィラメント ２，１２ Ｎｂ層，Ｃｕ層，Ｖ層，Ｐｂ層 ３ シングル線 ４ Ｃｕ−１０重量％Ｎｉ−１重量％Ｍｎの管 1,11 Nb-Ti alloy filament 2,12 Nb layer, Cu layer, V layer, Pb layer 3 Single wire 4 Cu-10 wt% Ni-1 wt% Mn tube
Claims (2)
／Ｎｂ−Ｔｉ合金またはＣｕ／Ｃｕ−Ｎｉ合金／Ｃｕ−
Ｎｉ−Ｍｎ合金／Ｎｂ−Ｔｉ合金から構成される超電導
線材において、Ｎｂ−Ｔｉ合金フィラメント周りに配置
されたＣｕ−Ｍｎ合金層またはＣｕ−Ｎｉ−Ｍｎ合金層
の内側にＮｂ層を配置してなることを特徴とするＮｂ−
Ｔｉ合金超電導線材。1. A Cu / Cu-Ni alloy / Cu-Mn alloy / Nb-Ti alloy or Cu / Cu-Ni alloy / Cu-
In a superconducting wire composed of a Ni-Mn alloy / Nb-Ti alloy, a Nb layer is arranged inside a Cu-Mn alloy layer or a Cu-Ni-Mn alloy layer arranged around the Nb-Ti alloy filament. Nb- characterized by
Ti alloy superconducting wire.
金フィラメントの中心部にもＮｂ層を配置し、中心部か
らＮｂ／Ｎｂ−Ｔｉ合金／Ｎｂ／Ｃｕ−Ｎｉ−Ｍｎ合金
という構造にしたことを特徴とする請求項１記載のＮｂ
−Ｔｉ合金超電導線材。2. In the above superconducting wire, an Nb layer is arranged also in the center of the Nb-Ti alloy filament, and a structure of Nb / Nb-Ti alloy / Nb / Cu-Ni-Mn alloy is formed from the center. Nb according to claim 1, characterized in that
-Ti alloy superconducting wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03276453A JP3099460B2 (en) | 1991-09-30 | 1991-09-30 | Nb-Ti alloy superconducting wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03276453A JP3099460B2 (en) | 1991-09-30 | 1991-09-30 | Nb-Ti alloy superconducting wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0594723A true JPH0594723A (en) | 1993-04-16 |
| JP3099460B2 JP3099460B2 (en) | 2000-10-16 |
Family
ID=17569651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03276453A Expired - Fee Related JP3099460B2 (en) | 1991-09-30 | 1991-09-30 | Nb-Ti alloy superconducting wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3099460B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491597A (en) * | 2019-07-31 | 2019-11-22 | 西部超导材料科技股份有限公司 | A kind of preparation method of NbTi/CuMn/Cu super-conduct composite line material |
| CN119361237A (en) * | 2024-12-24 | 2025-01-24 | 西北工业大学 | A method for preparing artificially pinned NbTi multi-core superconducting composite wire |
-
1991
- 1991-09-30 JP JP03276453A patent/JP3099460B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491597A (en) * | 2019-07-31 | 2019-11-22 | 西部超导材料科技股份有限公司 | A kind of preparation method of NbTi/CuMn/Cu super-conduct composite line material |
| CN119361237A (en) * | 2024-12-24 | 2025-01-24 | 西北工业大学 | A method for preparing artificially pinned NbTi multi-core superconducting composite wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3099460B2 (en) | 2000-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4148129A (en) | Aluminum-stabilized multifilamentary superconductor and method of its manufacture | |
| CN101517660B (en) | NbTi superconducting wire | |
| CN107850745A (en) | The manufacture of the superconductivity wire of reinforcing | |
| JPH0578991A (en) | Manufacture of wire | |
| JP4934497B2 (en) | Nb3Sn superconducting wire, precursor therefor, and method for producing the precursor | |
| US3730967A (en) | Cryogenic system including hybrid superconductors | |
| US5127149A (en) | Method of production for multifilament niobium-tin superconductors | |
| JPH0594723A (en) | Nb-ti alloy superconductive wire rod | |
| US4153986A (en) | Method for producing composite superconductors | |
| US3437459A (en) | Composite superconductor having a core of superconductivity metal with a nonsuperconductive coat | |
| JPH09167530A (en) | Oxide multi-core superconducting conductor and method for producing the same | |
| Miura et al. | Development of high Jc Nb-Ti multifilamentary superconducting wires for ac use by artificially introduced pins | |
| JP3489293B2 (en) | NbTi superconducting stranded wire | |
| JP2562435B2 (en) | Superfine superconducting wire | |
| Sharma et al. | Multifilamentary V3Ga wires and tapes with composite cores | |
| Hong et al. | High current density of NbTi composite | |
| JPH0714439A (en) | NbTi-based superconducting wire | |
| JP3018663B2 (en) | Nb-Ti alloy superconducting wire | |
| Rodrigues et al. | Properties and flux pinning of Cu-Nb superconductors with nanometric-scale pinning centers | |
| JP2018163738A (en) | NbTi SUPERCONDUCTING WIRE ROD, AND METHOD FOR PRODUCING NbTi SUPERCONDUCTING WIRE ROD | |
| DE19621068C1 (en) | Band-shaped high-t¶c¶ multifilament superconductor and process for its production | |
| JP3154246B2 (en) | Extruded billet for AC superconducting wire | |
| JPH06349349A (en) | Superconductive wire | |
| JPH0465032A (en) | Nb-ti superconducting wire | |
| JPH10116522A (en) | Nb-Ti superconducting wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees | ||
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R370 | Written measure of declining of transfer procedure |
Free format text: JAPANESE INTERMEDIATE CODE: R370 |