JPS63241827A - Manufacture of superconducting wire - Google Patents
Manufacture of superconducting wireInfo
- Publication number
- JPS63241827A JPS63241827A JP62076821A JP7682187A JPS63241827A JP S63241827 A JPS63241827 A JP S63241827A JP 62076821 A JP62076821 A JP 62076821A JP 7682187 A JP7682187 A JP 7682187A JP S63241827 A JPS63241827 A JP S63241827A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- mixture
- copper
- superconducting
- heat
- 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 9
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 13
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 11
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 11
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 7
- 150000002367 halogens Chemical class 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 3
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 4
- 229910001882 dioxygen Inorganic materials 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- 229910052788 barium Inorganic materials 0.000 claims description 3
- 229910052684 Cerium Inorganic materials 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 229910002480 Cu-O Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 abstract description 16
- 229910052802 copper Inorganic materials 0.000 abstract description 11
- 239000011159 matrix material Substances 0.000 abstract description 3
- 229910001278 Sr alloy Inorganic materials 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract description 2
- 125000005843 halogen group Chemical group 0.000 abstract description 2
- 125000004430 oxygen atom Chemical group O* 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 238000005491 wire drawing Methods 0.000 abstract description 2
- 239000011800 void material Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 7
- 239000002887 superconductor Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000011978 dissolution method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel 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
- Metal Extraction Processes (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は核磁気共鳴装置用マグネットや粒子加速器用マ
グネット等の超電導機器に用いられる超電導線の製造方
法に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method for manufacturing a superconducting wire used in superconducting equipment such as a magnet for a nuclear magnetic resonance apparatus or a magnet for a particle accelerator.
「従来の技術」
近来、常電導状態から超電導状態へ遷移する臨界温度（
Ｔ ｃ）が液体窒素温度以上の高い値を示す酸化物系の
超電導材料が種々発見されつつある。"Conventional technology" Recently, the critical temperature (
Various oxide-based superconducting materials are being discovered that exhibit a high value of Tc) higher than the liquid nitrogen temperature.
そして従来、この種の超電導材料からなる超電導体の中
でも（Ｌ ａ、 Ｓ ｒ）Ｃｕｏ系の超電導体を製造す
るには、Ｌａ酸化物粉末とＳｒ酸化物粉末とＣｕＯ粉末
を所定の比率（例えば、Ｌａ：Ｓｒ＝ １．５：０．５
であって（Ｌａ、Ｓｒ）：Ｃｕ＝ ｌ ：１）となるよ
うに混合後、成形して錠剤状とした後に熱処理して超電
導体を得ていた。Conventionally, among superconductors made of this type of superconducting material, in order to manufacture (La, Sr)Cuo-based superconductors, La oxide powder, Sr oxide powder, and CuO powder are mixed at a predetermined ratio (for example, , La:Sr=1.5:0.5
After mixing so that (La, Sr):Cu=l:1), the mixture was molded into a tablet shape and heat-treated to obtain a superconductor.
「発明が解決しようとする問題点」
前記（Ｌ ａ、 Ｓ ｒ）Ｃｕｏ系の超電導体は極めて
脆いために押出加工や縮径加工を施１．て長尺の超電導
線を得ようとしても断線等のトラブルを生じ易い問題が
あり、°長尺の線材を得ることは困難であった。"Problems to be Solved by the Invention" The (L a, S r) Cuo-based superconductor is extremely brittle, so it cannot be subjected to extrusion processing or diameter reduction processing.1. Even if an attempt is made to obtain a long superconducting wire, troubles such as wire breakage tend to occur, making it difficult to obtain a long wire.
本発明は、前記問題に鑑みてなされたもので１、Ａ −
Ｂ −Ｃｕｏ系の極めて臨界温度の高い長尺の超電導線
を製造できる方法の提供を目的とする。The present invention has been made in view of the above-mentioned problems.1.A-
The object of the present invention is to provide a method for manufacturing a long B-Cuo-based superconducting wire having an extremely high critical temperature.
「問題点を解決するための手段」
本発明は、前記問題点を解決するために、Ａ −Ｂ −
Ｃｕ−０系
（ただし、ＡはＬ ａ、 Ｃｅ、 Ｙ等の周期律表ｍａ
族元素を示し、ＢはＳｒ、Ｂａ等のアルカリ土類金属元
素を示す）
の超電導線を製造する方法であって、
前記Ａ元素の化合物とＢ元素の化合物を所定の組成比と
なるように調整して混合し、この混合物を溶解して合金
を得、この合金を酸素ガスあるいはハロゲンガス雰囲気
中で熱処理した後に粉末化するとともに、この粉末に、
銅粉末あるいは酸化銅粉末の少なくとも一方を混合して
シース材に充填し、縮径加工を施した後に超電導体を生
成させる熱処理を施すものである。"Means for Solving the Problems" In order to solve the above problems, the present invention aims to solve the problems described above.
Cu-0 series (A is a periodic table ma such as La, Ce, Y, etc.)
group element, and B represents an alkaline earth metal element such as Sr or Ba), the method comprises: a compound of element A and a compound of element B so as to have a predetermined composition ratio; Adjust and mix, melt this mixture to obtain an alloy, heat treat this alloy in an oxygen gas or halogen gas atmosphere, and then turn it into powder.
At least one of copper powder or copper oxide powder is mixed and filled into a sheath material, and after diameter reduction processing is performed, heat treatment is performed to generate a superconductor.
「作用」
へ元素の化合物とＢ元素の化合物を溶解し、固溶体化し
て組成を均一化するとともに、この合金を酸素ガスある
いはハロゲンガスで熱処理する。``Action'' The compound of the element and the compound of the B element are dissolved and made into a solid solution to make the composition uniform, and the alloy is heat treated with oxygen gas or halogen gas.
続いてこの合金を粉砕して銅または銅合金粉末を添加し
、シース材に充填して縮径した後に熱処理することによ
りシース材内部にＡ −Ｂ −Ｃｕ−０系の超電導物質
を生成させる。Subsequently, this alloy is pulverized, copper or copper alloy powder is added thereto, and the sheath material is filled with the powder to reduce its diameter, followed by heat treatment to generate an A-B-Cu-0 based superconducting substance inside the sheath material.
「実施例」
本発明方法を実施して（Ｌ ａ、 Ｓ ｒ）Ｃｕｏ系の
超電導線を製造するには、Ｌａ酸化物とＳｒ酸化物を例
えば、Ｌａ：５ｒ＝１．５：０．５の比率で混合して混
合物を得る。"Example" In order to manufacture a (La, Sr) Cuo-based superconducting wire by carrying out the method of the present invention, La oxide and Sr oxide are mixed, for example, in a ratio of La:5r=1.5:0.5. to obtain a mixture.
次にこの混合物をアーク溶解により溶融させ、凝固させ
てＬａ−Ｓｒ合金を得るとともに、この合金を粉砕する
。前記合金にあってはＬａとＳｒが固溶するために、Ｌ
ａとＳｒ、が均一に分散した組織となり。従ってこの合
金を粉砕することによりＬａとＳｒが均一に混合した粉
末を得ることができる。Next, this mixture is melted by arc melting, solidified to obtain a La-Sr alloy, and this alloy is pulverized. In the above alloy, since La and Sr form a solid solution, L
It becomes a structure in which a and Sr are uniformly dispersed. Therefore, by pulverizing this alloy, a powder containing a uniform mixture of La and Sr can be obtained.
なお、前記混合物を溶解する手段は、誘導加熱溶解等の
溶解法であっても差し支えない。Note that the means for dissolving the mixture may be a dissolution method such as induction heating dissolution.
次いで前記粉砕物を酸素雰囲気中で９００〜１２００℃
に、１時間〜１００時間加熱する熱処理を行う。なおこ
の熱処理は塩素ガス等のハロゲンガス雰囲気中で行って
も良い。前記ガス雰囲気中で加熱することにより、混合
物の結晶格子内に存在する空格子点に酸素原子あるいは
ハロゲン原子を充填することができ、これによって空格
子点の少ない混合物を得ることができる。このように空
格子点の少ない混合物から後述するように超電導物質を
生成させた場合、超電導特性の優れた超電導物質を得る
ことができる。Then, the pulverized material was heated at 900 to 1200°C in an oxygen atmosphere.
Then, heat treatment is performed for 1 hour to 100 hours. Note that this heat treatment may be performed in a halogen gas atmosphere such as chlorine gas. By heating in the gas atmosphere, the vacancies present in the crystal lattice of the mixture can be filled with oxygen atoms or halogen atoms, thereby making it possible to obtain a mixture with fewer vacancies. When a superconducting material is produced from such a mixture with a small number of vacancies as described below, a superconducting material with excellent superconducting properties can be obtained.
この後に前記粉砕物に、Ｃｕ：（Ｌａ、５ｒ）＝ １
：１となるようにＣｕＯ粉末を混合するとともに、全体
をステンレス管等のシース材に充填し、その後にシース
材の外周に鋼管を複合して複合体を作製する。After this, Cu: (La, 5r) = 1 is added to the pulverized material.
CuO powder is mixed so as to have a ratio of 1:1, the whole is filled into a sheath material such as a stainless steel pipe, and then a steel pipe is combined around the outer periphery of the sheath material to produce a composite.
次いでこの複合体に押出加工と線引加工を施して所望の
直径の線材とした後に、熱処理（８００〜１１００℃に
１−１００時間程度加熱する処理）を施す。この熱処理
によって銅の粒子どうしが溶着するとともに、銅粒子の
周囲にＬａとＳｒが拡散して反応することにより（Ｌ
ａ、 Ｓ ｒ）’Ｃｕｏ系の超電導物質を生成させるこ
とができ、超電導線を得ることができる。この超電導線
にあっては、銅粒子の周囲に超電導物質が生成されてい
るので、マトリックスとなる銅粒子により高い強度を発
揮できろ構造となっている。Next, this composite is subjected to extrusion processing and wire drawing processing to obtain a wire rod of a desired diameter, and then subjected to heat treatment (heating treatment at 800 to 1100° C. for about 1 to 100 hours). This heat treatment causes the copper particles to weld together, and La and Sr diffuse and react around the copper particles (L
a, S r)' Cuo-based superconducting material can be produced, and a superconducting wire can be obtained. In this superconducting wire, a superconducting substance is generated around the copper particles, so the structure allows the copper particles serving as a matrix to exhibit high strength.
以上のように製造された超電導線は、長尺の線材であり
、４０〜５０にという高い臨界温度を示し、良好な超電
導特性を示した。更にこの超電導線はコイル化において
も同等問題ないものであった。なお、前記超電導線を必
要に応じて多数本集合し、安定化材の内部に埋設するこ
とによりマルチストランド化することも自由である。The superconducting wire manufactured as described above was a long wire rod, had a high critical temperature of 40 to 50°C, and exhibited good superconducting properties. Furthermore, this superconducting wire could be made into coils without any problems. Note that it is also possible to form a multi-strand structure by gathering a large number of the superconducting wires as necessary and burying them inside the stabilizing material.
なお、前記実施例では（Ｌ ａ、 Ｓ ｒ）Ｃｕｏ系の
超電導線の製造方法に適用した例について説明したが、
へ元素としてＬａの代わりにＹ、Ｓｃ、Ｃｅ、Ｐｒ、Ｎ
ｄ。In addition, in the above example, an example was explained in which the method was applied to a method for manufacturing a (L a, S r) Cuo-based superconducting wire.
Y, Sc, Ce, Pr, N instead of La as elements
d.
Ｐｍ、Ｅｕ、Ｃｄ、Ｔｂ、Ｄｙ、Ｈｏ、Ｅｒ、Ｔｍ、Ｙ
ｂ、Ｌｕなどの元素を用い、Ｂ元素としてＳｒの代わり
にＢｅ。Pm, Eu, Cd, Tb, Dy, Ho, Er, Tm, Y
Using elements such as B, Lu, etc., Be is used instead of Sr as the B element.
Ｍ ｇ、 Ｂ ａ、 Ｃ−ａ、 ｎ ａなどの元素を用
いても良いのは勿論である。Of course, elements such as Mg, Ba, Ca, and na may also be used.
「発明の効果」
以上説明したように本発明は、Ａ −Ｂ −Ｃｕ−０系
の超電導線を製造するに際し、へ元素の化合物とＢ元素
の化合物を溶解して固溶化することにより組成の均一な
合金を得、この合金を酸素ガス雰囲気あるいはハロゲン
ガス雰囲気中で熱処理した後に粉砕し、銅と酸化銅の少
なくとも一方を混合してシース材中に充填して熱処理す
るものであり、組成の均一な合金から形成した組成の均
一な粉末を用いるために、熱処理によってシース材の内
部側全体に効率良く超電導物質を生成さけることができ
、極めて臨界温度の高い酸化物系の超電導線を容易に製
造できる効果がある。また、銅粒子の周囲に分散したＡ
元素とＢ元素を反応させて銅粒子の周囲に超電導物質を
生成させるために、得られた超電導線は銅マトリツクス
内に超電導物質が生成された構造になり十分な機械強度
を有する。"Effects of the Invention" As explained above, the present invention enables the composition to be changed by dissolving a compound of element B and a compound of element B to form a solid solution when manufacturing an A-B-Cu-0 system superconducting wire. A homogeneous alloy is obtained, this alloy is heat-treated in an oxygen gas atmosphere or a halogen gas atmosphere, and then pulverized. At least one of copper and copper oxide is mixed and then filled into a sheath material and heat-treated. By using a powder with a uniform composition formed from a uniform alloy, it is possible to efficiently prevent the generation of superconducting substances throughout the interior of the sheath material through heat treatment, making it easy to produce oxide-based superconducting wires that have extremely high critical temperatures. It has the effect of being manufacturable. In addition, A dispersed around the copper particles
Since the element and the B element are reacted to generate a superconducting substance around the copper particles, the obtained superconducting wire has a structure in which the superconducting substance is generated within the copper matrix and has sufficient mechanical strength.
一方、Ａ −Ｂ −Ｃｕ−０系の超電導線は極めて高い
臨界温度を示し、従来の超電導線より格段に有利な冷却
条件で使用できるために、本発明方法で製造された超電
導線を用いることによって超電導機器の冷却設備を簡略
化することができ、設備コストを低減できる効果がある
。On the other hand, the superconducting wire of the A-B-Cu-0 system exhibits an extremely high critical temperature and can be used under much more advantageous cooling conditions than conventional superconducting wires. This has the effect of simplifying the cooling equipment for superconducting equipment and reducing equipment costs.
Claims (1)
、ＢはＳｒ、Ｂａ等のアルカリ土類金属元素を示す）の
超電導線を製造する方法であって、 前記Ａ元素の化合物とＢ元素の化合物を所定の組成比と
なるように調整して混合し、この混合物を溶解して合金
を得るとともに、この合金を酸素ガスあるいはハロゲン
ガス雰囲気中で熱処理した後に粉末化し、この粉末に、
銅粉末あるいは酸化銅粉末の少なくとも一方を混合して
シース材に充填し、縮径加工を施した後に超電導物質を
生成させる熱処理を施すことを特徴とする超電導線の製
造方法。[Claims] A-B-Cu-O system superconducting wire (A represents a group IIIa element such as La, Ce, Y, etc., and B represents an alkaline earth metal element such as Sr, Ba, etc.) A method for producing a compound comprising: adjusting and mixing a compound of element A and a compound of element B at a predetermined composition ratio, melting this mixture to obtain an alloy, and heating the alloy with oxygen gas or After heat treatment in a halogen gas atmosphere, the powder is made into a powder.
A method for manufacturing a superconducting wire, which comprises mixing at least one of copper powder or copper oxide powder, filling the sheath material with the mixture, performing diameter reduction processing, and then performing heat treatment to generate a superconducting substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62076821A JPS63241827A (en) | 1987-03-30 | 1987-03-30 | Manufacture of superconducting wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62076821A JPS63241827A (en) | 1987-03-30 | 1987-03-30 | Manufacture of superconducting wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63241827A true JPS63241827A (en) | 1988-10-07 |
Family
ID=13616336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62076821A Pending JPS63241827A (en) | 1987-03-30 | 1987-03-30 | Manufacture of superconducting wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63241827A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63279513A (en) * | 1987-05-11 | 1988-11-16 | Toshiba Corp | Superconductor wire rod and its manufacture |
| JPH02196007A (en) * | 1989-01-24 | 1990-08-02 | Matsushita Electric Ind Co Ltd | Production of superconductor |
-
1987
- 1987-03-30 JP JP62076821A patent/JPS63241827A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63279513A (en) * | 1987-05-11 | 1988-11-16 | Toshiba Corp | Superconductor wire rod and its manufacture |
| JPH02196007A (en) * | 1989-01-24 | 1990-08-02 | Matsushita Electric Ind Co Ltd | Production of superconductor |
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