JPS62133049A - Manufacture of superconducting wire of compound - Google Patents
Manufacture of superconducting wire of compoundInfo
- Publication number
- JPS62133049A JPS62133049A JP60271918A JP27191885A JPS62133049A JP S62133049 A JPS62133049 A JP S62133049A JP 60271918 A JP60271918 A JP 60271918A JP 27191885 A JP27191885 A JP 27191885A JP S62133049 A JPS62133049 A JP S62133049A
- Authority
- JP
- Japan
- Prior art keywords
- heat treatment
- composite material
- superconducting wire
- compound
- plating
- 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
- 150000001875 compounds Chemical class 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 238000007747 plating Methods 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 3
- 239000007787 solid Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 229910002530 Cu-Y Inorganic materials 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 abstract description 7
- 229910052733 gallium Inorganic materials 0.000 abstract description 6
- 229910052718 tin Inorganic materials 0.000 abstract description 5
- 229910052720 vanadium Inorganic materials 0.000 abstract description 4
- -1 V3Ga Chemical class 0.000 abstract description 3
- 238000009713 electroplating Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229940126214 compound 3 Drugs 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 229910000765 intermetallic Inorganic materials 0.000 abstract 1
- 238000004544 sputter deposition Methods 0.000 abstract 1
- 229910000999 vanadium-gallium Inorganic materials 0.000 abstract 1
- 229910052758 niobium Inorganic materials 0.000 description 3
- 238000004804 winding Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000003039 volatile agent 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】
（産業上の利用分野）
本発明はＩｎ−３ｉｔｕ法、又は粉末法により化合物超
電導線材を製造する方法の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an improvement in a method for manufacturing compound superconducting wires by an In-3 itu method or a powder method.
（従来の技術）
従来Ｉｎ−３ｉｔｕ法によりＶ ３ Ｇａ化合物超電導
線材又はＮｂ３ Ｓｎ化合物超電導線材を製造する方法
としては、Ｖ ３ Ｇａ化化合物超電導月刊場合にはま
ずＣｕ−Ｖｍ合線材を製造した後、この表面にＧａ溶融
メッキを行い、然る後４５０〜６００℃において３〜６
日間高温熱処理を行いＧａを拡散せしめてえているもの
である。又Ｎｂ３ Ｓｎ化合物超電導線材の場合にはＣ
ｕ −Ｎ ｂ １１１合線材を製造した後、この表面に
Ｓｎ溶融メッキを行い然る後５００〜７００℃において
３〜６日間高温熱処理を行いＳｎを拡散せしめてえてい
るものである。(Prior art) As a conventional method for manufacturing a V 3 Ga compound superconducting wire or a Nb 3 Sn compound superconducting wire by the In-3 itu method, in the case of V 3 Ga compound superconducting wire, first a Cu-Vm composite wire is manufactured, and then , Ga hot-dip plating is performed on this surface, and then 3-6
It is obtained by performing high-temperature heat treatment for several days to diffuse Ga. In addition, in the case of Nb3 Sn compound superconducting wire, C
After manufacturing the u-N b 111 composite wire, the surface is hot-dip plated with Sn and then subjected to high-temperature heat treatment at 500 to 700° C. for 3 to 6 days to diffuse Sn.
このように高温拡散熱処理のみでＧａ 、 Ｓｎを拡散
反応せしめているものであるが、前記の如＜Ｇａ又はＳ
ｎをメッキを施す工程において、Ｇａ、Ｓｎ又は中間化
合物等が溶融拡散して融点の合金又は化合物に変化する
際に揮発物が溶融した線材の表面に露出しボイド或は亀
裂を生じてＧａ、 Ｓｎの偏在化をまねくと共に拡散後
の線材が脆くなり、Ｊｃ（臨界電流密度）の高いものを
うろことが出来ないという欠点があった。In this way, Ga and Sn are caused to undergo a diffusion reaction only by high-temperature diffusion heat treatment.
In the process of plating n, when Ga, Sn, or intermediate compounds, etc. melt and diffuse and change to an alloy or compound with a melting point, volatiles are exposed on the surface of the molten wire, creating voids or cracks, and forming Ga, Sn, or intermediate compounds. This leads to uneven distribution of Sn, and the wire after diffusion becomes brittle, which has the disadvantage that it cannot pass through a wire with a high Jc (critical current density).
（発明が解決しようとする問題点）
本発明はかかる現状に鑑み鋭意研究を行った結果、超電
導線材の表面にボイドや亀裂を生ぜしめることなく、優
れた臨界電流密度を宵する超電導線材をえんとするもの
である。(Problems to be Solved by the Invention) As a result of intensive research in view of the current situation, the present invention has been developed to provide a superconducting wire that has an excellent critical current density without producing voids or cracks on the surface of the superconducting wire. That is.
（問題点を解決するための手段）
本発明方法はＣｕとＸ金属からなるＣｕ−Ｘ？Ｕ合材を
ベースとするＸｍＹｎ化合物超電導線の製造方法におい
て、Ｃｕ−Ｘ複合材にＸ金属をメッキにて被着した後、
該メッキ工程にて形成されたＣｕ−Ｙ低融点化合物を固
体状態にて拡散しうる中間熱処理を行った後、次いで高
温熱処理を行うことを特徴とするものである。(Means for Solving the Problems) The method of the present invention is based on the Cu-X? In the method for manufacturing an XmYn compound superconducting wire based on a U composite material, after plating the X metal onto the Cu-X composite material,
The method is characterized in that after performing an intermediate heat treatment that allows the Cu-Y low melting point compound formed in the plating process to be diffused in a solid state, a high temperature heat treatment is then performed.
本発明方法にてＸ金属としてはＶ、Ｎｂを指すものであ
り、又メッキを施すためのＸ金属としてはＧａ。In the method of the present invention, the X metal refers to V and Nb, and the X metal used for plating is Ga.
Ｓｏを指すものである。It refers to So.
なおＸ金属をメッキする方法としては溶融メッキ、電気
メッキ、スパッタメッキの方法にて行うものである。Note that the method for plating the X metal is hot-dip plating, electroplating, or sputter plating.
又本発明方法にて中間熱処理温度としてはＧａの場合に
はＣｕ−１Ｏ〜８０ＡＴ％■を２９〜２５４℃において
０．５〜１０日間行うものであり、Ｎｂの場合にはＣｕ
−１Ｏ−９０ＡＴ％Ｎｂを２２５〜４１４℃において０
．５〜１０口間行うものである。In addition, in the method of the present invention, the intermediate heat treatment temperature is Cu-1O~80AT%■ in the case of Ga at 29~254°C for 0.5~10 days, and in the case of Nb, Cu
-1O-90AT%Nb at 225-414℃
．． This should be done for 5 to 10 mouths.
なお熱処理雰囲気は流気不活性、密閉不活性中、連続真
空排気、密閉真空中にて行うものである。The heat treatment atmosphere is one in which the heat treatment is carried out in a flowing air inert state, a closed inert state, a continuous vacuum evacuation state, and a closed vacuum state.
又本発明方法において高温熱処理温度としては５００〜
７００℃にて行うものである。In addition, in the method of the present invention, the high temperature heat treatment temperature is 500~
This is carried out at 700°C.
（作用）
本発明方法は上述の如＜ Ｃｕ−Ｖ或はＣｕ−Ｎｂの複
合祠にＧａ、 Ｓｎをメッキを行った後、上記の如き温
度にて中間熱処理を行うことにより、このメッキ工程に
て生成されるＣｕ−Ｇａ 、 Ｃｕ−８ｎの低融点化合
物例えばＣｕ−Ｇａ ２ 、 Ｃｕ６−３ｎ５等を溶融
せしめることなく固体拡散して消滅せしめることにより
脆化することのない機械的特性に優れた超電導線材をう
ることが出来るものである。即ち第１図（Ａ）に示す如
＜Ｃｕ−Ｖ段合材料１にＧａの溶融メッキ２を施した場
合、これをそのまま高温熱処理を行うと第１図（Ｂ）に
示す如＜Ｇａや中間化合物（ＣｕＧａ２）３が偏在化し
超電導線材を著しく脆くすることが認められた。(Function) The method of the present invention is performed by plating Ga and Sn on the Cu-V or Cu-Nb composite as described above, and then performing an intermediate heat treatment at the above-mentioned temperature. It has excellent mechanical properties that do not cause embrittlement by dispersing low melting point compounds such as Cu-Ga and Cu-8n, such as Cu-Ga2 and Cu6-3n5, which are produced by solid-state diffusion and disappearing without melting. It can produce superconducting wire. That is, when hot-dip Ga plating 2 is applied to Cu-V step material 1 as shown in FIG. 1(A), if this is directly subjected to high-temperature heat treatment, as shown in FIG. 1(B), Ga and intermediate It was observed that the compound (CuGa2) 3 was unevenly distributed and made the superconducting wire extremely brittle.
この原因を究明するために上記のＧａをメッキした１試
料について示差走査熱量計（ＤＳＣという）により５０
〜５００℃の温度範囲で測定した処２５０〜２６５°Ｃ
にて吸熱反応が表われていることを確認した。In order to investigate the cause of this, one sample plated with Ga was analyzed using a differential scanning calorimeter (DSC).
250-265°C measured in a temperature range of ~500°C
It was confirmed that an endothermic reaction was occurring.
そこでＣｕＧａｚ化合物が形成されているＧａ溶融メッ
キを施した試料について２４０〜２５４℃にて１〜２０
予備拡散熱処理を行った後、再度ＤＳＣにて５０〜５０
０°Ｃの温度範囲で測定した処理１図（Ｃ）に示すＩＪ
、ｏ ＜ ＣｕＧａ２化合物は全く消失しＶ３ Ｇａが
形成されていることが確認された。Therefore, for samples subjected to Ga hot-dip plating in which CuGaz compounds are formed, 1 to 20
After pre-diffusion heat treatment, DSC was performed again at 50-50
Treatment 1 IJ shown in Figure (C) measured in a temperature range of 0 °C
, o < It was confirmed that the CuGa2 compound completely disappeared and V3 Ga was formed.
（実施例）
厚さ１００〜１５０μ、幅５ ｍｍのＣｕＶ ｍ合線祠
の表面にＧａの溶融メッキを施した後、２５０℃にて１
日間中間熱処理を行い、次いで５００℃にて４日間熱処
理を行って本発明超電導線材をえた。(Example) After applying Ga hot-dip plating to the surface of a CuV m composite wire shrine with a thickness of 100 to 150 μm and a width of 5 mm, it was plated at 250°C for 1
Intermediate heat treatment was performed for one day, and then heat treatment was performed at 500° C. for 4 days to obtain a superconducting wire of the present invention.
斯くして得た本発明超電導線材についてその性能を試み
るために破断時歪み率及びＪｃを測定した。In order to test the performance of the thus obtained superconducting wire of the present invention, the strain rate at break and Jc were measured.
その結果は第１表に示す通りである。The results are shown in Table 1.
なお本発明超電導線材と比較するために中間熱処理を行
うことなく、メッキ線材を高温拡散熱処理を行って？１
すた超電導線材についても同様破断時歪み率及びＪｃを
測定してその結果を第１表に併記した。In addition, in order to compare with the superconducting wire of the present invention, the plated wire was subjected to high-temperature diffusion heat treatment without performing intermediate heat treatment. 1
The strain rate at break and Jc of the superconducting wire were similarly measured, and the results are also listed in Table 1.
（効果）
以」二詳述した如く本発明方法によれば次の如き効果を
有する。(Effects) As described in detail below, the method of the present invention has the following effects.
（１）超電導線材（テープ）の表面に亀裂、ボイドを生
することなく超電導特性に優れたものをうることか出来
る。(1) A superconducting wire (tape) with excellent superconducting properties can be obtained without producing cracks or voids on the surface.
（２） 破断ｎ：；歪み率が優れているため、マグネ
ン！・に蓚く際に、曲率半径を小さくして巻くことか川
明るため高磁場かえられ易い。(2) Fracture n: ; Because of its excellent strain rate, Magnen!・When winding, it is easy to change the high magnetic field because the radius of curvature is small and the winding is light.
第１図（Δ）は超電導線材において複合材料にメッキを
施した状態の断面図、第１図（Ｂ）は第１図（Δ）のメ
ッキ線に高温熱処理を施した状態の断面図、第１図（Ｃ
）は本発明方法の如く第１図（Ａ）線に中間熱処理を施
した状態の断面図である。
１・・・複合材料、２・・・メッキ、３・・・ＣｕＧａ
２の中間化合物、４・・・Ｖ３ Ｇａ層。
出願人代理人 弁理士 鈴江武彦
第１０（Ａ）
第１図（Ｂ）Figure 1 (Δ) is a cross-sectional view of the composite material plated in the superconducting wire, Figure 1 (B) is a cross-sectional view of the plated wire in Figure 1 (Δ) that has been subjected to high-temperature heat treatment, Figure 1 (C
) is a cross-sectional view of a state in which intermediate heat treatment has been applied to the line (A) in FIG. 1 as in the method of the present invention. 1... Composite material, 2... Plating, 3... CuGa
2 intermediate compound, 4...V3 Ga layer. Applicant's agent Patent attorney Takehiko Suzue No. 10 (A) Figure 1 (B)
Claims (1)
ｍＹｎ化合物超電導線の製造方法において、Ｃｕ−Ｘ複
合材にＹ金属をメッキにて被着した後、該メッキ工程に
て形成されるＣｕ−Ｙ低融点化合物を固体状態にて拡散
しうる中間熱処理を行った後、次いで高温熱処理を行う
ことを特徴とする化合物超電導線材の製造方法。X based on Cu-X composite material consisting of Cu and X metal
In the method for producing an mYn compound superconducting wire, after plating a Y metal onto a Cu-X composite material, an intermediate heat treatment that can diffuse the Cu-Y low melting point compound formed in the plating process in a solid state. 1. A method for manufacturing a compound superconducting wire, which comprises performing a high-temperature heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60271918A JPS62133049A (en) | 1985-12-03 | 1985-12-03 | Manufacture of superconducting wire of compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60271918A JPS62133049A (en) | 1985-12-03 | 1985-12-03 | Manufacture of superconducting wire of compound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62133049A true JPS62133049A (en) | 1987-06-16 |
Family
ID=17506683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60271918A Pending JPS62133049A (en) | 1985-12-03 | 1985-12-03 | Manufacture of superconducting wire of compound |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62133049A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0304061A2 (en) * | 1987-08-20 | 1989-02-22 | Sumitomo Electric Industries Limited | Superconducting ceramics elongated body and method of manufacturing the same |
| US6794970B2 (en) * | 2000-09-27 | 2004-09-21 | Igc-Super Power, Llc | Low alternating current (AC) loss superconducting coils |
-
1985
- 1985-12-03 JP JP60271918A patent/JPS62133049A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0304061A2 (en) * | 1987-08-20 | 1989-02-22 | Sumitomo Electric Industries Limited | Superconducting ceramics elongated body and method of manufacturing the same |
| US6794970B2 (en) * | 2000-09-27 | 2004-09-21 | Igc-Super Power, Llc | Low alternating current (AC) loss superconducting coils |
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