JPH01282803A - Manufacture of ceramic group superconducting magnet - Google Patents
Manufacture of ceramic group superconducting magnetInfo
- Publication number
- JPH01282803A JPH01282803A JP63112115A JP11211588A JPH01282803A JP H01282803 A JPH01282803 A JP H01282803A JP 63112115 A JP63112115 A JP 63112115A JP 11211588 A JP11211588 A JP 11211588A JP H01282803 A JPH01282803 A JP H01282803A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- wire rod
- copper
- powder
- ceramic
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000002887 superconductor Substances 0.000 claims abstract description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000011810 insulating material Substances 0.000 claims abstract description 5
- 239000011812 mixed powder Substances 0.000 claims abstract description 4
- 230000001590 oxidative effect Effects 0.000 claims abstract description 3
- 229920005989 resin Polymers 0.000 claims abstract description 3
- 239000011347 resin Substances 0.000 claims abstract description 3
- 239000004063 acid-resistant material Substances 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 2
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000000886 hydrostatic extrusion Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910002482 Cu–Ni Inorganic materials 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910020012 Nb—Ti Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- -1 Y2 03 Chemical class 0.000 description 1
- 238000005280 amorphization Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910000657 niobium-tin Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005491 wire drawing Methods 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］
本発明は超電導マグネットの製造方法に係り、特にセラ
ミックス系の超電導マグネットの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a superconducting magnet, and particularly to a method for manufacturing a ceramic superconducting magnet.
［従来の技術］
近年、特に−昨年の秋以降、セラミックス系超電導体の
開発が世界中で活発に進められている。[Prior Art] In recent years, especially since last fall, the development of ceramic superconductors has been actively progressing all over the world.
この超電導体は、従来の最高の臨界温度を示すＮｂ３Ｇ
ｅの２３Ｋを大巾に越えるもので、Ｂａ−Ｌａ−Ｃｕ−
０系セラミツクス（臨界温度３５Ｋ ） 、Ｌａ−８ｒ
−Ｃｕ−０系セラミツクス（超電導開始温度３７に以上
）、Ｌａ−Ｃａ−Ｃｕ−０系セラミツクス、Ｙ−Ｂａ−
Ｃｕ−０系セラミツクス（ゼロ抵抗温度９３Ｋ）等のほ
か、２３３にあるいは室温以上の臨界温度を示すセラミ
ックスも報告されている。This superconductor is Nb3G, which has the highest conventional critical temperature.
It greatly exceeds 23K of e, and is Ba-La-Cu-
0 series ceramics (critical temperature 35K), La-8r
-Cu-0 ceramics (superconductivity starting temperature 37 or higher), La-Ca-Cu-0 ceramics, Y-Ba-
In addition to Cu-0 ceramics (zero resistance temperature of 93 K), ceramics exhibiting a critical temperature of 233 or higher than room temperature have also been reported.
このようにセラミックス系超電導材料は臨界温度が液体
窒素温度以上や室温で用いることができる可能性があり
、この場合、高価な液体ヘリウムを使用しなくても済む
ため、経済的に極めて有利となるほか、超電導発電機等
に使用されると構造がシンプルで熱機関の効率も向上す
る等の利点を有する。In this way, it is possible that ceramic-based superconducting materials can be used with a critical temperature higher than liquid nitrogen temperature or at room temperature, and in this case, there is no need to use expensive liquid helium, which would be extremely advantageous economically. In addition, when used in superconducting generators, etc., it has the advantage of having a simple structure and improving the efficiency of heat engines.
しかしながら、セラミックスは硬くて、かつ脆いため、
現在実用化されているＮｂ−Ｔｉ系やＮｂ３Ｓｎ系の超
電導線のように線材に加工することが困難であり、この
点を克服することがセラミックス系の超電導マグネット
の実用化への第１歩となる。However, since ceramics are hard and brittle,
It is difficult to process into wire rods like the Nb-Ti and Nb3Sn-based superconducting wires that are currently in practical use, and overcoming this point is the first step toward practical application of ceramic-based superconducting magnets. Become.
現在線材の製造方法として、アモルファスのテープある
いは線材を酸素雰囲気下で加熱処理する方法、銅系合金
管内にセラミックスを充填し、熱処理および圧延加工等
を施して線材やテープ状に成形する方法、等が提案され
ている。Current methods for manufacturing wire rods include a method of heat treating amorphous tape or wire rod in an oxygen atmosphere, a method of filling a copper alloy tube with ceramics, and forming it into a wire rod or tape shape by heat treatment and rolling, etc. is proposed.
しかしながら、前者の方法では、極めて急速な冷却を必
要とするため、細線や薄膜のテープしか得られず、また
長尺の線材を連続的に製造することが困難であり、さら
に後者の方法ではセラミックス超電導体生成の熱処理を
コイル成形後に施すことができず、したがってその特性
も低下せざるを得ないという難点を有しており、マグネ
ットの製造が困難であった。However, since the former method requires extremely rapid cooling, only thin wires or thin film tapes can be obtained, and it is difficult to continuously manufacture long wire rods. It is difficult to manufacture magnets because the heat treatment for forming the superconductor cannot be performed after the coil is formed, and its properties must therefore deteriorate.
［発明が解決しようとする課題］
本発明は、以上の難点を解決するためになされたもので
、アモルファス化のための急速冷却を必要とせず、かつ
、セラミックス超電導体生成の熱処理をコイル成形後に
施すことができ、これにより長さ方向に亘って良好な特
性を有するセラミックス系超電導線からなるマグネット
を製造する方法を提供することをその目的とする。[Problems to be Solved by the Invention] The present invention has been made to solve the above-mentioned difficulties, and it does not require rapid cooling for amorphization, and the heat treatment for producing a ceramic superconductor can be performed after coil forming. It is an object of the present invention to provide a method for manufacturing a magnet made of a ceramic superconducting wire that can be applied to a ceramic superconducting wire and thereby has good characteristics over its length.
［課題を解決するための手段］
本発明のセラミックス系超電導マグネットの製造方法は
、
（イ）セラミックス超電導体の粉末あるいは熱処理によ
りセラミックス超電導体を生成する構成材料よりなる混
合粉末を銅あるいは銅合金管内に充填する工程と、
（ロ）次いで減面加工を施し線材に成形する工程と、
（ハ）この外周に多孔性の絶縁材を被覆する工程と、
（ニ）このようにして得られた線材を耐酸性の材料から
なる巻枠上に巻回してコイルを形成する工程と、
（ホ）前記コイルを酸液中に浸漬して前記鋼あるいは銅
合金を化学的に溶解除去する工程と、（へ）このコイル
を酸化性雰囲気中で加熱処理した後、硬化性樹脂を含浸
する工程とからなることを特徴とする。[Means for Solving the Problems] The method for manufacturing a ceramic superconducting magnet of the present invention includes: (a) Powder of a ceramic superconductor or a mixed powder of constituent materials that produce a ceramic superconductor by heat treatment is placed in a copper or copper alloy tube. (b) Next, the step of subjecting the wire rod to area reduction processing and forming it into a wire rod; (c) The step of covering the outer periphery with a porous insulating material; (d) The wire rod obtained in this way (e) immersing the coil in an acid solution to chemically dissolve and remove the steel or copper alloy; f) The coil is heat-treated in an oxidizing atmosphere and then impregnated with a curable resin.
本発明におけるセラミックス超電導体としては、たとえ
ばＹＢａ２ Ｃｕ３０ｘ （ｘ ＜ １４ ：ペロブス
カイト）や、これにフッ素等を添加したものを挙げるこ
とができ、これは７００〜１０００℃で焼成後、機械的
に破砕して粉末状にして用いることができる。あるいは
超電導体を構成する酸素以外の成分の粉末またはその酸
化物や炭酸塩等の混合粉末、たとえばＹ２ ０３ 、Ｂ
ａＣＪやＣｕＯの粉末を混合して用いることができる。Examples of the ceramic superconductor in the present invention include YBa2Cu30x (x < 14: perovskite) and those to which fluorine etc. are added, which are mechanically crushed after firing at 700 to 1000°C. It can be used in powder form. Or a powder of components other than oxygen constituting the superconductor, or a mixed powder of its oxides and carbonates, such as Y2 03 , B
A mixture of powders of aCJ and CuO can be used.
また減面加工としては、予め静水圧加圧成型後、静水圧
押出加工を施すことが好ましく、次いでスウエージング
加工、伸線加工や圧延加工が施される。Further, as for area reduction processing, it is preferable to perform isostatic pressure extrusion processing after isostatic pressure molding in advance, and then swaging processing, wire drawing processing, and rolling processing.
上記の多孔性の絶縁材としては、石英ヤーンの袋編みが
好適する。As the above-mentioned porous insulating material, bag-knitted quartz yarn is suitable.
［作用］
本発明においては、コイル形成後の酸液中への浸漬によ
り銅（合金）管の一部または全部が除去され圧縮成形さ
れた粉末が露出するため、最終形状のコイルの状態で超
電導セラミックスの連続体を生成することができ、これ
により長さ方向に亘り特性の良好な線材により形成され
たマグネットを製造することができる。[Function] In the present invention, part or all of the copper (alloy) tube is removed by immersion in an acid solution after the coil is formed, and the compression molded powder is exposed. A continuous body of ceramics can be produced, thereby making it possible to manufacture a magnet made of a wire with good properties over its length.
また減面加工として静水圧押出加工を施した場合には、
粉末を均一かつ高度に圧縮した状態で押出加工すること
ができ、全長の亘り均一な変形が可能となる。In addition, when hydrostatic extrusion processing is applied as area reduction processing,
The powder can be extruded in a uniform and highly compressed state, allowing for uniform deformation over the entire length.
［実施例コ
まずＹ２ ０３ 、ＢａＣＯ３およびＣｕＯの粉末を所
定量配合して、これを７００〜９００℃の温度で焼成し
Ｙ−Ｂａ−Ｃｕ−０系のセラミックス超電導体を作製し
た。[Example] First, predetermined amounts of powders of Y2 03 , BaCO3 and CuO were blended and fired at a temperature of 700 to 900°C to produce a Y-Ba-Cu-0 ceramic superconductor.
これを機械的に破砕して５μｍφ以下の粉体状としＸ線
回折による分析を行った結果、
ＹＢａ２ Ｃｕ３０ｘ （Ｘ’：ｉ ７ ）が生成され
ていることが確認された。This was mechanically crushed into a powder having a diameter of 5 μm or less and analyzed by X-ray diffraction. As a result, it was confirmed that YBa2Cu30x (X':i 7 ) was produced.
次に、上記の粉体をゴムチューブ内に充填して、ｘｏｏ
ｏｏｋｇ／ｃｊの圧力で３分間静水圧加圧処理を施した
。このようにして得られた成形体の寸法は２４ＩＩＩＩ
φＸ長さ１５０■である。Next, fill the above powder into a rubber tube and xoo
Hydrostatic pressure treatment was performed for 3 minutes at a pressure of ookg/cj. The dimensions of the molded body thus obtained are 24III
φX length is 150mm.
この成形体を外径３５＋ａｍφ、内径２５ａ１１０φの
Ｃｕ−Ｎｉ合金管に収容して、その両端を密封し押出ビ
ットを作製した。このビレットに２段階の静水圧押出加
工を施して外径１１１ａ＋ａ＋φのロッドを作製した後
、スウエージング加工により、外径３１１Ｉｌφの線材
とし、次いで圧延加工を施して幅３Ｉ−１厚さ１■のテ
ープを製造した。このテープの外側に石英ヤーンを袋編
みし、次いでステンレス巻枠上に巻回した後、酸液中に
浸漬してＣｕ−Ｎ１合金を溶解除去し、さらに水洗乾燥
後、２ｋｇｆ／ ｄの酸素気流中で８００℃に加熱し、
次いでエポキシ樹脂を含浸してマグネットを製造した。This molded body was housed in a Cu-Ni alloy tube with an outer diameter of 35+amφ and an inner diameter of 25mm and 110φ, and both ends of the tube were sealed to produce an extrusion bit. This billet was subjected to two-step hydrostatic extrusion processing to produce a rod with an outer diameter of 111a+a+φ, and then swaged into a wire rod with an outer diameter of 311Ilφ, and then rolled to a wire rod with a width of 3I-1 and a thickness of 1. manufactured the tape. A quartz yarn is bag-knitted on the outside of this tape, then wound on a stainless steel frame, and then immersed in an acid solution to dissolve and remove the Cu-N1 alloy, washed with water, dried, and then exposed to an oxygen stream of 2 kgf/d. Heat to 800℃ in
The magnet was then impregnated with epoxy resin to produce a magnet.
［発明の効果コ[Effects of invention
Claims (2)
理によりセラミックス超電導体を生成する構成材料より
なる混合粉末を銅あるいは銅合金管内に充填する工程と
、 （ロ）次いで減面加工を施し線材に成形する工程と、 （ハ）この外周に多孔性の絶縁材を被覆する工程と、 （ニ）このようにして得られた線材を耐酸性の材料から
なる巻枠上に巻回してコイルを形成する工程と、 （ホ）前記コイルを酸液中に浸漬して前記銅あるいは銅
合金を化学的に溶解除去する工程と、（ヘ）このコイル
を酸化性雰囲気中で加熱処理した後、硬化性樹脂を含浸
する工程とからなることを特徴とするセラミックス系超
電導マグネットの製造方法。(1) (a) Filling a copper or copper alloy tube with powder of a ceramic superconductor or a mixed powder of constituent materials that produce a ceramic superconductor through heat treatment, and (b) Next, subjecting it to area reduction processing and forming it into a wire rod. (c) covering the outer periphery with a porous insulating material; (d) winding the wire obtained in this way onto a winding frame made of acid-resistant material to form a coil. (e) immersing the coil in an acid solution to chemically dissolve and remove the copper or copper alloy; and (f) heat-treating the coil in an oxidizing atmosphere and then applying a hardening resin. 1. A method for manufacturing a ceramic superconducting magnet, comprising the step of impregnating with.
請求項１記載のセラミックス系超電導マグネットの製造
方法。(2) The method for manufacturing a ceramic superconducting magnet according to claim 1, wherein the porous insulating material has a bag-knitted structure of quartz yarn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63112115A JPH01282803A (en) | 1988-05-09 | 1988-05-09 | Manufacture of ceramic group superconducting magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63112115A JPH01282803A (en) | 1988-05-09 | 1988-05-09 | Manufacture of ceramic group superconducting magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01282803A true JPH01282803A (en) | 1989-11-14 |
Family
ID=14578546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63112115A Pending JPH01282803A (en) | 1988-05-09 | 1988-05-09 | Manufacture of ceramic group superconducting magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01282803A (en) |
-
1988
- 1988-05-09 JP JP63112115A patent/JPH01282803A/en active Pending
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