JPS63248009A - Superconductive wire and its manufacture - Google Patents
Superconductive wire and its manufactureInfo
- Publication number
- JPS63248009A JPS63248009A JP62080922A JP8092287A JPS63248009A JP S63248009 A JPS63248009 A JP S63248009A JP 62080922 A JP62080922 A JP 62080922A JP 8092287 A JP8092287 A JP 8092287A JP S63248009 A JPS63248009 A JP S63248009A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- ceramic
- metal pipe
- raw material
- superconductive
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 9
- 239000007769 metal material Substances 0.000 claims abstract description 4
- 238000005245 sintering Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 11
- 238000005491 wire drawing Methods 0.000 abstract description 9
- 238000010791 quenching Methods 0.000 abstract description 7
- 238000003754 machining Methods 0.000 abstract 2
- 230000000171 quenching effect Effects 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000010949 copper Substances 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- BXYOGFJOZBMQEB-UHFFFAOYSA-N [Cu].[Sr].[La] Chemical compound [Cu].[Sr].[La] BXYOGFJOZBMQEB-UHFFFAOYSA-N 0.000 description 2
- XHOSAIMWRHTSSQ-UHFFFAOYSA-N [Cu][Sr][Y] Chemical compound [Cu][Sr][Y] XHOSAIMWRHTSSQ-UHFFFAOYSA-N 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910020018 Nb Zr Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance 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〕
本発明はセラミック系超伝導材料を用いた超伝導線に係
り、特に線材として容易に加工できるとともに、その線
材が所望の形状に変形しやすく、かつクエンチ（超伝導
が破れる）現象で起こる線材の破壊を防ぐのに好適な超
伝導線およびその製造方法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a superconducting wire using a ceramic superconducting material, and in particular, it can be easily processed into a wire and the wire can be easily deformed into a desired shape. The present invention also relates to a superconducting wire suitable for preventing destruction of the wire due to a quench (breakage of superconductivity) phenomenon, and a method for manufacturing the same.
従来の超伝導線としては、Ｎｂ−Ｚｒにオブージルコニ
ウム）、Ｎｂ−Ｔ（にオプーチタン）、Ｎ ｂ ｓ ８
ｎ等の金属材料があるが臨界温度は低く、液体ヘリウ
ム中で用いる必要があった。このためこの線材を用いた
超伝導マグネットは多大の運転費用を要するとともに、
液体ヘリウム製造設備等の付属設備を必要とした。一方
最近ペロブスカイト構造のセラミック系超伝導物質が臨
界温度の高い物質として注目を集めている。その−例と
しては、フィジカル・レビユー・レターズ（Ｐｈｙｓ。Conventional superconducting wires include Nb-Zr (obuzirconium), Nb-T (optitanium), Nb s 8
There are metal materials such as n, but their critical temperature is low and it was necessary to use them in liquid helium. Therefore, superconducting magnets using this wire require large operating costs, and
Additional equipment such as liquid helium production equipment was required. On the other hand, ceramic superconducting materials with a perovskite structure have recently attracted attention as materials with high critical temperatures. An example is Physical Review Letters (Phys.
Ｒ６ｖ、Ｌｅｔｔ、） ５８巻、４０５頁から４０７
頁（１９８７年）において論じられている。この他５ｒ
−Ｌａ−Ｃｕ（ストロンチウム−ランタン−銅）酸化物
、５ｒ−Ｙ−Ｃｕ（ストロンチウム−イツトリウム−銅
）酸化物が最近報告され、その臨界点は液体窒素温度を
越えるまでに到っている。R6v, Lett,) Volume 58, Pages 405-407
(1987). Other 5r
-La-Cu (strontium-lanthanum-copper) oxide and 5r-Y-Cu (strontium-yttrium-copper) oxide have been recently reported, and their critical point has reached a point exceeding the liquid nitrogen temperature.
しかしもろくて硬いセラミック材料を用いてコイル状等
に加工するのはそのままでは困難である。However, it is difficult to process a brittle and hard ceramic material into a coil shape or the like.
またセラミック材料は常伝導状態では金属材料に比べて
高抵抗であり、クエンチ現象がおきて超伝導状態から常
伝導状態になった場合、ジーール発熱により断線等の事
故が発生するという問題があった０
本発明の目的は、セラミック系超伝導物質を用いた超伝
導線において、線材の製造が容易であり、その線材が加
工性に富み、クエンチ現象で起こる線材の破壊を防止す
る超伝導線の構造および製造方法を提供することにある
０
〔問題点を解決するための手段〕
上記目的は第１図（１）（２）（３）に示す工程からな
る方法により製造された超伝導線により達成される。Additionally, ceramic materials have a higher resistance than metal materials in a normal conduction state, and when a quench phenomenon occurs and the superconductivity state changes to a normal conduction state, there is a problem in that accidents such as wire breakage may occur due to Ziehl heat generation. 0 The purpose of the present invention is to provide a superconducting wire using a ceramic superconducting material that is easy to manufacture, has good workability, and prevents the wire from breaking due to the quench phenomenon. [Means for solving the problem] The above purpose is to provide a structure and a manufacturing method using a superconducting wire manufactured by the method consisting of the steps shown in Fig. achieved.
（１）セラミック系超伝導物質の原料２となる粉末を金
属管１の中へ入れる。(1) Powder that will become the raw material 2 of the ceramic superconducting material is put into the metal tube 1.
（２）この金属管１に線引き等の塑性加工を施し、線材
に加工する（線引き工程）０
（３）線材の熱処理を行ない、内部の原料粉末を焼結し
、セラミック系超伝導物質４を形成する（熱処理工程）
。(2) This metal tube 1 is subjected to plastic processing such as wire drawing and processed into a wire rod (wire drawing process) (3) The wire rod is heat treated, the raw material powder inside is sintered, and the ceramic superconducting material 4 is formed. Form (heat treatment process)
.
金属管１内に詰められた原料２の粉末は、金属管１の線
引き加工中に金属管１の内径が縮少することにより稠密
に充填できる。また線引き加工により所望の線径の超伝
導線が容易に得られる。この線材を必要な形状、例えば
コイル状に変形後熱処理を行なえば、内部のセラミック
超伝導物質は所望の形状に容易に焼結される０又この線
材は少々の変形を行なうことはもちろん可能であり、焼
結後所望の形状に加工まることもできる。The powder of the raw material 2 packed into the metal tube 1 can be densely packed by reducing the inner diameter of the metal tube 1 during wire drawing of the metal tube 1. Moreover, a superconducting wire with a desired wire diameter can be easily obtained by wire drawing. If this wire is transformed into a desired shape, for example into a coil, and then subjected to heat treatment, the internal ceramic superconducting material can be easily sintered into the desired shape.Also, it is of course possible to slightly deform this wire. Yes, it can be processed into a desired shape after sintering.
また、セラミック系超伝導材料は臨界温度以上の常伝導
状態では高抵抗であるため、この材料のみからなる線材
の場合クエンチ現象によって抵抗零の状態から高抵抗の
状態になった際に発生するジーール熱によって断線する
。これを防ぐのが本発明の特徴の１つである。すなわち
超伝導状態が破れた場合、セラミック系超伝導材料４の
抵抗が高くなっても、外側の金属管１は抵抗が低く、そ
こに電流が流れやすくなる０つまり外側の金属管１がバ
イパスの役目を果し断線を防ぐ。In addition, since ceramic superconducting materials have high resistance in the normal conduction state above the critical temperature, wires made only of this material have a zeal that occurs when the state changes from zero resistance to high resistance due to the quench phenomenon. Disconnection due to heat. One of the features of the present invention is to prevent this. In other words, when the superconducting state is broken, even if the resistance of the ceramic superconducting material 4 becomes high, the resistance of the outer metal tube 1 is low and current flows easily there. In other words, the outer metal tube 1 becomes a bypass. It fulfills its role and prevents disconnection.
以下、本発明による製造方法の一実施例を第１図（１）
（２）（３）により説明する。An example of the manufacturing method according to the present invention is shown in FIG. 1 (1) below.
This will be explained using (2) and (3).
（１）純鋼管１（外径ＩＱｍｍ、内径４ ｍ ｍ ）に
Ｂａ（バリウム）、Ｌａ（ランク／）、ＣＯ（ｍ）の各
酸化物粉末を所定の比率で詰め、セラミ・ツク系超伝導
物質の原料２とする。(1) A pure steel pipe 1 (outer diameter IQ mm, inner diameter 4 mm) is filled with oxide powders of Ba (barium), La (rank/), and CO (m) in a predetermined ratio to create ceramic-based superconductivity. Let it be the raw material 2 of the substance.
（２）線引き工程により、より細径の７ｍｍ線材へと加
工する。このとき内部の原料２は圧縮され充填率を高く
することができ好都合である。(2) A wire rod with a smaller diameter of 7 mm is processed through a wire drawing process. At this time, the raw material 2 inside is compressed and the filling rate can be increased, which is convenient.
（３）熱処理温度９００℃で焼結することによって原料
２はセラミック系超伝導物質４に変化する。(3) The raw material 2 is changed into a ceramic superconducting material 4 by sintering at a heat treatment temperature of 900°C.
この線材の臨界温度を測定したところ、４２″Ｋが得ら
れ、通常の焼結されたセラミック単体の臨界点と同様の
結果を示した。この線材を用いた超伝導コイルを液体ヘ
リウム中で用いると、クエンチ現象が起こっても超伝導
線の破壊はおこらなかった０
本発明の超伝導物質としては上記以外にも、５ｒ−Ｌａ
−Ｃｕ（ストロンチウム−ランタン−銅）酸化物や５ｒ
−Ｙ−Ｃｕ（ストロンチウム−イツトリウム−銅）酸化
物等を用いることができる。When the critical temperature of this wire was measured, it was found to be 42"K, which is similar to the critical point of a normal sintered ceramic. A superconducting coil using this wire was used in liquid helium. Even if the quench phenomenon occurred, the superconducting wire did not break down. In addition to the above, the superconducting material of the present invention is 5r-La.
-Cu (strontium-lanthanum-copper) oxide and 5r
-Y-Cu (strontium-yttrium-copper) oxide or the like can be used.
さらに本発明は上記ペロブスカイト構造の物質に限らず
、他のセラミック系超伝導物質に対しても有効である。Furthermore, the present invention is effective not only for the above-mentioned perovskite structure materials but also for other ceramic superconducting materials.
また線引き工程を繰返し、細線化する途中で、歪取り焼
鈍を行なう必要があるが、これと焼結のための熱処理を
兼ねて、工程を簡略化することも可能である０
また線材の断面形状は円形のみでなく、正方形、長方形
、ダ円形等線引き工程でその目的によって自由に選べる
ことは言うまでもない。In addition, it is necessary to repeat the wire drawing process and perform strain relief annealing during thinning, but it is also possible to simplify the process by combining this with heat treatment for sintering.0 Also, the cross-sectional shape of the wire rod Needless to say, it is not only circular, but also square, rectangular, circular, etc. that can be freely selected depending on the purpose.
本発明によれば、セラミック系超伝導物質による超伝導
線を容易に作製できるだけでなく、もろくて硬いセラミ
ック系超伝導線でありながら、容易に所望の形状に加工
できる０またクエンチ現象によるジェール発熱によるセ
ラミック系超伝導線の破壊が防止でき、安定して超伝導
コイルとして用いることができる０According to the present invention, not only can a superconducting wire made of a ceramic superconducting material be easily produced, but also a ceramic superconducting wire that is brittle and hard can be easily processed into a desired shape. The ceramic superconducting wire can be prevented from being destroyed by
第１図は本発明の製造方法を示す工程断面図である。
１・・・金属管、
２・・・セラミック系超伝導物質の原料、３・・・治具
、FIG. 1 is a process sectional view showing the manufacturing method of the present invention. 1... Metal tube, 2... Raw material for ceramic superconducting material, 3... Jig,
Claims (1)
て配置したことを特徴とする超伝導線。 ２、セラミック系超伝導物質を形成するための原料粉末
を中空の金属管に入れる工程、これを線引きする工程お
よび原料粉末の焼結工程を有する超伝導線製造方法。[Claims] 1. A superconducting wire characterized in that a metal material is disposed in close contact with the outside of a ceramic superconducting material. 2. A method for producing a superconducting wire, which includes the steps of placing raw material powder for forming a ceramic superconducting material into a hollow metal tube, drawing the same into a wire, and sintering the raw material powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62080922A JPS63248009A (en) | 1987-04-03 | 1987-04-03 | Superconductive wire and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62080922A JPS63248009A (en) | 1987-04-03 | 1987-04-03 | Superconductive wire and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63248009A true JPS63248009A (en) | 1988-10-14 |
Family
ID=13731914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62080922A Pending JPS63248009A (en) | 1987-04-03 | 1987-04-03 | Superconductive wire and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63248009A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01140520A (en) * | 1987-02-05 | 1989-06-01 | Sumitomo Electric Ind Ltd | Manufacture of composite oxide ceramic superconductive wire |
-
1987
- 1987-04-03 JP JP62080922A patent/JPS63248009A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01140520A (en) * | 1987-02-05 | 1989-06-01 | Sumitomo Electric Ind Ltd | Manufacture of composite oxide ceramic superconductive wire |
| JPH09185916A (en) * | 1987-02-05 | 1997-07-15 | Sumitomo Electric Ind Ltd | Manufacture of composite oxide ceramic superconducting wire |
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