JPS63285810A - Manufacture of nb3sn type composite superconductor - Google Patents
Manufacture of nb3sn type composite superconductorInfo
- Publication number
- JPS63285810A JPS63285810A JP62118919A JP11891987A JPS63285810A JP S63285810 A JPS63285810 A JP S63285810A JP 62118919 A JP62118919 A JP 62118919A JP 11891987 A JP11891987 A JP 11891987A JP S63285810 A JPS63285810 A JP S63285810A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- wire
- nb3sn
- composite
- composite superconductor
- 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.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 239000002887 superconductor Substances 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 5
- 238000009792 diffusion process Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 229910000657 niobium-tin Inorganic materials 0.000 abstract description 8
- 229910052718 tin Inorganic materials 0.000 abstract description 7
- 229910001128 Sn alloy Inorganic materials 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000011946 reduction process Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011159 matrix material Substances 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
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
この発明はＮｂＪＳｎ系複合超電導体の製造方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a method for manufacturing a NbJSn-based composite superconductor.
（従来の技術）
我々は以前に、Ｎｂ管を用いた複合超電導体の細線化、
およびＮｂ３Ｓｎの超電導特性を向上させる方法を開示
した（特公告 昭５５−１６５４７ ）。すなわちＮｂ
管の内側にＣｕを被覆したＳｎを配置し、Ｎｂ管の外側
にＣｕを被覆した複合体を複数本束ねて、減面加工した
後、拡散処理を施こしてＮｂ２ Ｓｎを生成させる複合
超電導体の製造方法である（いわゆるＮｂｔｕｂｅ法）
。しかし、この製造方法ではＮｂ管を使うためＮｂ棒を
使用する場合と異なった加工上の問題点がある。それは
高い減面加工度をとると、Ｎｂ管の肉厚が不均一になり
、拡散処理時にＮｂｆエーブ内のａｎがＮｂとすべて反
応せずに外側のＣｕマトリックスへ拡散するため、臨界
電流（Ｉｃ）の低下をまねく欠点がある。(Prior art) We have previously developed thinning composite superconductors using Nb tubes.
and disclosed a method for improving the superconducting properties of Nb3Sn (Special Publication No. 16547/1982). That is, Nb
A composite superconductor in which Sn coated with Cu is placed on the inside of the tube and multiple composites coated with Cu are placed on the outside of the Nb tube, which are bundled together, subjected to area reduction processing, and then subjected to diffusion treatment to generate Nb2Sn. (so-called Nbtube method)
. However, since this manufacturing method uses a Nb tube, there are processing problems that are different from those when using a Nb rod. When a high degree of surface reduction is applied, the wall thickness of the Nb tube becomes nonuniform, and during the diffusion process, an in the Nbf wave diffuses into the outer Cu matrix without reacting with Nb at all, resulting in a critical current (Ic ) has the disadvantage of causing a decrease in
（発明が解決しようとする問題点）
本轄明は上記のような欠点が除かれ、Ｎｂチー−ブ内の
ＳｎがすべてＮｂと反応してＮｂ、 Ｓｎとなるため、
高いＩｃを有するＮｂ、 Ｓｎ複合超電導線を製造する
方法を提供することを目的とするものである。(Problems to be Solved by the Invention) The present invention eliminates the above-mentioned drawbacks, and since all the Sn in the Nb cube reacts with Nb to become Nb and Sn,
The object of the present invention is to provide a method for manufacturing a Nb, Sn composite superconducting wire having a high Ic.
（問題点を解決するための手段）
本発明の複合超電導体を製造する場合について図面を参
照して説明する。第１図（Ａ）に示すようにＣｕを主成
分とするＣｕ系金属管１を介して、Ｎｂを主成分とする
Ｎｂ系合金管２を外側に、さらにその外側にＴａ等のＳ
ｎと未反応の金属管３を３Ｓｎを主成分とするＳｎ合金
４を内側に接触せしめたこの単心線を′ａ数本束ね、Ｃ
ｕ管５内に装着した後、この複合体６を減面加工し、７
７５℃以下の温度で拡散処理を施こして第１図（Ｂ）に
示すようなＮｂ３Ｓｎ超電導化合物７を生成させるＮｂ
３Ｓｎ系複合超電導体の製造方法である。(Means for Solving the Problems) The production of the composite superconductor of the present invention will be described with reference to the drawings. As shown in FIG. 1(A), a Nb-based alloy tube 2 containing Nb as a main component is passed through a Cu-based metal tube 1 containing Cu as a main component, and an S such as Ta or the like is placed on the outside.
N and the unreacted metal tube 3 are brought into contact with the Sn alloy 4 whose main component is 3Sn, and several of these single-core wires are bundled together, C
After being installed in the U-tube 5, this composite 6 is subjected to surface reduction processing, and
Nb is subjected to a diffusion treatment at a temperature of 75° C. or lower to produce a Nb3Sn superconducting compound 7 as shown in FIG. 1(B).
This is a method for manufacturing a 3Sn-based composite superconductor.
（作用）
Ｎｂ系合金管の外側にＳｎと未反応であるＴａ管等を用
いることにより、高い減面加工度をとって、Ｎｂ管の肉
厚が不均一になっても拡散処理時にＮｂチューブ内のＳ
ｎがすべてＮｂと反応して、Ｎｂ３Ｓｎ Ｎを形成する
ために非常に高い臨界電流（Ｉｃ）が得られる。(Function) By using a Ta tube that does not react with Sn on the outside of the Nb-based alloy tube, a high degree of surface reduction can be achieved, and even if the thickness of the Nb tube becomes uneven, the Nb tube can be easily removed during the diffusion process. S inside
A very high critical current (Ic) is obtained for all n to react with Nb to form Nb3SnN.
（実施例）
第１図（Ａ）に示すように、Ｃｕ管１に被覆された（２
）クララ）：”Ｓｎ線を作るために、外径ＩＱ１４ｒｎ
’ 、内径５．３ ｍｔｔｔφのＣｕ管内にＳｎ合金４
を装着した後、細線化加工を行ない外径を５．６ｊｌ−
にした。このＣｕクラッドＳｎｇを外径Ｂ ＩＩ、１１
．内径５．６ ｕｒｎ’ （Ｄ Ｎｂ−１ｗｔ、 ％Ｔ
１管２内に装着し、さらにこの組合せ体を外径９１１’
。(Example) As shown in FIG. 1(A), a Cu tube 1 was coated with (2
) Clara): “To make Sn wire, outer diameter IQ14rn
', Sn alloy 4 is placed inside a Cu tube with an inner diameter of 5.3 mtttφ.
After installing, perform wire thinning processing to reduce the outer diameter to 5.6jl-
I made it. This Cu clad Sng has an outer diameter of B II, 11
．． Inner diameter 5.6 urn' (D Nb-1wt, %T
1 inside the pipe 2, and furthermore, this combination body has an outer diameter of 911'.
.
内径８−のＴａ管３に装着した。その後この単心線を２
６４本束ね、外径１９５１１’、内径１７１−のＣｕ管
５に装着した戊合体６を減面加工し、線径０．８７−ま
で細線化した。しかる後、この線材を７００°Ｃで５０
時間、真空雰囲気中で熱処理して、第１図（Ｂ）に示す
ように、ＮｂとＳｎを反応させてＮｂ、 Ｓｎ化合物７
を生成させたＮｂ、 Ｓｎ複合超電導体８を得だ。It was attached to a Ta tube 3 with an inner diameter of 8-. Then connect this single wire to 2
A bundle of 64 wires was attached to a Cu tube 5 having an outer diameter of 19511' and an inner diameter of 171', and the surface of the joint 6 was reduced to a wire diameter of 0.87'. After that, this wire was heated at 700°C for 50
As shown in FIG. 1(B), Nb and Sn are reacted to form a Nb, Sn compound 7 by heat treatment in a vacuum atmosphere for several hours.
A Nb, Sn composite superconductor 8 was obtained.
このようにして得られたＮｂ、 Ｓｎ複合超逗導体８の
臨界電流（Ｉｃ）を１０〜１５Ｔ（テスラ）の磁界中で
測定した結果を第２図に示す。第２図において、横軸は
磁界を示し、縦軸はＩｃを示す。・印は特性比較用導体
で、従来の製法（Ｔａ管３のかわりにＣｕ 電を用いる
）で作った線径０．８７−のＮｂ３Ｓｎ複合超電導体で
ある。Ｑ印は本発明に係る導体で、この図から明らかな
ように本発明に係る超電導体は従来の超電導体の特性よ
り２０％すべての磁界で向上し。The critical current (Ic) of the Nb, Sn composite superconductor 8 thus obtained was measured in a magnetic field of 10 to 15 T (Tesla), and the results are shown in FIG. In FIG. 2, the horizontal axis represents the magnetic field, and the vertical axis represents Ic. The conductor marked with * is a conductor for comparison of characteristics, which is an Nb3Sn composite superconductor with a wire diameter of 0.87-mm made by the conventional manufacturing method (using Cu conductor instead of Ta tube 3). The mark Q indicates the conductor according to the present invention, and as is clear from this figure, the characteristics of the superconductor according to the present invention are improved by 20% in all magnetic fields compared to the conventional superconductor.
ていることがわかる。You can see that
Ｎｂ系合金管の外側にＳｎと未反応であるＴａ管等を用
いることにより、誦い減面加工度をとって、Ｎｂ管の肉
厚が不均一になっても拡散処理時にＮｂチ１−プ内のＳ
ｎがすべてＮｂと反応して、Ｎｂ３Ｓｎ ）４を形成す
るために非常に高い臨界電流（Ｉｃ）がイ０られる。By using a Ta tube that does not react with Sn on the outside of the Nb-based alloy tube, we can reduce the surface of the Nb tube even if the wall thickness of the Nb tube becomes uneven. S in the group
A very high critical current (Ic) is required for all n to react with Nb to form Nb3Sn)4.
第１図Ｃ芥キヰはこの発明の詳細な説明するための複合
超電導体の構成について示す一部断面図、第２因は本発
明導体と比較導体の臨界電流（Ｉｃ）−磁界特性図であ
る。
ｌ・・・Ｃｕ系合金管、 ２・・・Ｎｂ系合金管
、３・・・Ｔａ ＃の金属管、 ４・・・Ｓｎ合金
、５・・・Ｃｕ管、 ６・・・複合体、７
・・・Ｎｂ３Ｓｎ化合物、 ８・・・Ｎｂ３Ｓｎ複
合超電導体。
代理人 弁理士 則 近 憲 借
間 松山光速
第１図
穐＋ＣＴ）
第２図Figure 1C is a partial sectional view showing the structure of a composite superconductor for detailed explanation of the present invention, and the second factor is a critical current (Ic)-magnetic field characteristic diagram of the present invention conductor and comparative conductor. be. l...Cu-based alloy tube, 2...Nb-based alloy tube, 3...Ta# metal tube, 4...Sn alloy, 5...Cu tube, 6...composite, 7
...Nb3Sn compound, 8...Nb3Sn composite superconductor. Agent: Patent attorney: Nori Chika Rented room: Matsuyama Light Speed Figure 1 (Aki+CT) Figure 2
Claims (1)
分とするＮｂ系合金管を外側に、さらにその外側にＴａ
等のＳｎと未反応の金属管を、Ｓｎを主成分とするＳｎ
合金を内側に接触せしめたこの単心線を複数本束ね、Ｃ
ｕ管内に装着した後この複合体を減面加工し７７５℃以
下の温度で拡散処理を施こし、Ｎｂ＿３Ｓｎ化合物超電
導層を生成させることを特徴とするＮｂ＿３Ｓｎ系複合
超電導体の製造方法。A Nb-based alloy tube containing Nb as a main component is passed through a Cu-based alloy tube containing Cu as a main component, and a Ta layer is placed on the outside of that.
A metal tube that has not reacted with Sn such as
A plurality of these single core wires with the alloy in contact on the inside are bundled, and C
A method for manufacturing a Nb_3Sn-based composite superconductor, which comprises: installing the composite in a u-tube, reducing the area of the composite, and performing a diffusion treatment at a temperature of 775° C. or lower to generate a Nb_3Sn compound superconducting layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62118919A JPS63285810A (en) | 1987-05-18 | 1987-05-18 | Manufacture of nb3sn type composite superconductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62118919A JPS63285810A (en) | 1987-05-18 | 1987-05-18 | Manufacture of nb3sn type composite superconductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63285810A true JPS63285810A (en) | 1988-11-22 |
Family
ID=14748429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62118919A Pending JPS63285810A (en) | 1987-05-18 | 1987-05-18 | Manufacture of nb3sn type composite superconductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63285810A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005093235A (en) * | 2003-09-17 | 2005-04-07 | Kobe Steel Ltd | Nb3Sn SUPERCONDUCTING WIRE MATERIAL, AND MANUFACTURING METHOD OF THE SAME |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60170111A (en) * | 1984-02-14 | 1985-09-03 | 住友電気工業株式会社 | Copper coated nbti superconductive lead |
| JPS6188408A (en) * | 1984-10-08 | 1986-05-06 | 昭和電線電纜株式会社 | Manufacture of nb3sn superconducting wire |
-
1987
- 1987-05-18 JP JP62118919A patent/JPS63285810A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60170111A (en) * | 1984-02-14 | 1985-09-03 | 住友電気工業株式会社 | Copper coated nbti superconductive lead |
| JPS6188408A (en) * | 1984-10-08 | 1986-05-06 | 昭和電線電纜株式会社 | Manufacture of nb3sn superconducting wire |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005093235A (en) * | 2003-09-17 | 2005-04-07 | Kobe Steel Ltd | Nb3Sn SUPERCONDUCTING WIRE MATERIAL, AND MANUFACTURING METHOD OF THE SAME |
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