JPH02156608A - Superconducting magnet and manufacture thereof - Google Patents
Superconducting magnet and manufacture thereofInfo
- Publication number
- JPH02156608A JPH02156608A JP31136388A JP31136388A JPH02156608A JP H02156608 A JPH02156608 A JP H02156608A JP 31136388 A JP31136388 A JP 31136388A JP 31136388 A JP31136388 A JP 31136388A JP H02156608 A JPH02156608 A JP H02156608A
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- glass
- wire
- winding
- magnet
- 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
- 238000004804 winding Methods 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003822 epoxy resin Substances 0.000 abstract description 8
- 229920000647 polyepoxide Polymers 0.000 abstract description 8
- 239000002887 superconductor Substances 0.000 abstract description 8
- 239000000377 silicon dioxide Substances 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 3
- 239000003365 glass fiber Substances 0.000 abstract description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract description 2
- 229910052709 silver Inorganic materials 0.000 abstract description 2
- 239000004332 silver Substances 0.000 abstract description 2
- 239000011521 glass Substances 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- 239000010410 layer Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910017053 inorganic salt Inorganic materials 0.000 description 3
- 239000012266 salt solution Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- 229910000505 Al2TiO5 Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- -1 polysiloxane Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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〕
本発明は無機高融点材料で電気絶縁された超電導マグネ
ットと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 magnet electrically insulated with an inorganic high melting point material and a method for manufacturing the same.
従来、巻回されてなる超電導マグネットを構成する超電
導線は、巻線部における電気的短絡を防ぐために、表面
が有機または無機の電気絶縁材料で覆われている。特に
、化合物超電導体あるいは酸化物超電導体のように、線
材を巻回した後に所望の熱処理を施して超電導特性を得
る場合には、超電導線に予め耐熱性のガラス糸で編組ま
たは巻絶縁処理を施し、次いで、このガラス絶縁超電導
線を巻枠に巻付け、所望の熱処理を施し、目的に応し゛
ζエポキシ樹脂などを含浸させて超電導マグネットを製
作している。Conventionally, the surface of a superconducting wire constituting a wound superconducting magnet is covered with an organic or inorganic electrically insulating material in order to prevent electrical short circuits in the winding portion. In particular, when winding a wire and then subjecting it to a desired heat treatment to obtain superconducting properties, such as in the case of compound superconductors or oxide superconductors, the superconducting wire is pre-braided or wrapped with heat-resistant glass thread or insulated. Then, this glass-insulated superconducting wire is wound around a winding frame, subjected to desired heat treatment, and impregnated with ζ epoxy resin or the like depending on the purpose to produce a superconducting magnet.
しかしながら、上述のような従来の超電導マグネットに
は次のような問題点があった。すなわち、イ）超電導線
に施すガラス絶縁材は、７００℃以上の熱処理を経ると
超電導線から剥離し、以後の絶縁性や樹脂含浸作業性等
を悪化させる。このため従来巻線部の熱処理温度は７０
０ ’Ｃ以下に制限され、よって十分高い超電導特性を
有するマグネット力（得られなかった。However, the conventional superconducting magnet as described above has the following problems. That is, (a) the glass insulating material applied to the superconducting wire peels off from the superconducting wire when subjected to heat treatment at 700° C. or higher, deteriorating the subsequent insulation properties, resin impregnation workability, etc. For this reason, the conventional heat treatment temperature for the winding part was 70°C.
The magnetic force was limited to 0'C or less, and therefore had sufficiently high superconducting properties (could not be obtained).
口）パルス用また交流用超電導マグネットにおいては、
巻線部に剛性が要求されるが、巻線部の空隙部にエポキ
シ樹脂を含浸させたのみでは十分な剛性が得られなかっ
た。口）For pulse and AC superconducting magnets,
Although rigidity is required for the winding portion, sufficient rigidity could not be obtained by simply impregnating the voids in the winding portion with epoxy resin.
本発明は以上のような点にかんがみてなされたもので、
その目的とするところは、超電導線の巻線部に高温の熱
処理を施すことが可能なため、十分な超電導特性を有し
、かつ、パルスまたは交流用途に適合する超電導マグネ
ットとその製造方法を提供することにある。The present invention has been made in view of the above points.
The purpose of this is to provide a superconducting magnet and its manufacturing method that has sufficient superconducting properties and is suitable for pulse or alternating current applications because it is possible to perform high-temperature heat treatment on the windings of superconducting wire. It's about doing.
すなわち、本発明の超電導マグネットはガラス絶縁され
た超電導線からなる巻線部を有する超電導マグネットに
おいて、前記巻線部の巻回されたガラス絶縁された超電
導線間に無機高融点材料が介在されていることを特徴と
するものであり、前記超電導マグネットの製造方法とし
ては、ガラス絶縁された超電導線にゾル・ゲル反応によ
り無機高融点材料をコーティングし、次に、この超電導
線を巻枠に巻回して巻線部を構成し、次に所望の熱処理
を施すことを特徴とする超電導マグネットの製造方法、
およびガラス絶縁された超電導線を、ターン間および／
または巻回層間に無機高融点材料成形物を介在させなが
ら巻枠に巻回することを特徴とする超電導マグネットの
製造方法が提供される。That is, the superconducting magnet of the present invention has a winding portion made of glass-insulated superconducting wire, and an inorganic high-melting point material is interposed between the wound glass-insulated superconducting wires of the winding portion. The method for manufacturing the superconducting magnet includes coating a glass-insulated superconducting wire with an inorganic high melting point material by a sol-gel reaction, and then winding the superconducting wire around a winding frame. A method for producing a superconducting magnet, which comprises rotating the wire to form a winding portion, and then subjecting it to a desired heat treatment.
and glass-insulated superconducting wire between turns and/or
Alternatively, there is provided a method for manufacturing a superconducting magnet, characterized in that the superconducting magnet is wound around a winding frame with an inorganic high melting point material molded article interposed between the winding layers.
本発明にていう超電導線とはＮｂｚＳｎなどの化合物超
電導体およびＹ−Ｂａ−Ｃｕ−０系、Ｂ１−３ｒ−Ｃｕ
−０系等の酸化物超電導体からなる線条材を指すもので
あり、また無機高融点材料としては、Ａ２□Ｏｓ、Ｓｉ
Ｏ□、ＴｉＯ□、Ａ１．０．／Ｓ ｉｏｚ 、Ｚｒ０ｚ
、Ｋ、ＴｉａＯ＋３などを指し、コーテイング材とし
ては１−以下の如き繊細状ものが望ましく、介在物とし
て用いる場合には、ロープ、テープや布などに成形加工
したものを用いることが望ましい。The superconducting wire in the present invention refers to compound superconductors such as NbzSn, Y-Ba-Cu-0 series, B1-3r-Cu
It refers to a wire material made of an oxide superconductor such as -0 series, and examples of inorganic high melting point materials include A2Os, Si
O□, TiO□, A1.0. /S ioz, Zr0z
, K, TiaO+3, etc. As a coating material, a delicate one such as 1- or less is desirable. When used as an inclusion, it is desirable to use a material formed into a rope, tape, cloth, or the like.
熱処理温度はガラス絶縁糸の軟化点は７００〜８００℃
であるが、被覆された超電導線表面の金属酸化物と加熱
により反応すると、その軟化点は６５０〜７００に低下
する。一方、十分な超電導特性を得るためには、酸化物
超電導体では８００〜９５０℃、Ｎｂ５ＳｎやＮｂ２Ａ
１などのＡ−１５型化合物超電導体では７００〜９５０
’Ｃの熱処理を施す必要がある。As for the heat treatment temperature, the softening point of glass insulation thread is 700-800℃
However, when it reacts with the metal oxide on the surface of the coated superconducting wire by heating, its softening point decreases to 650-700. On the other hand, in order to obtain sufficient superconducting properties, oxide superconductors must be heated at 800 to 950°C, such as Nb5Sn or Nb2A.
700 to 950 for A-15 type compound superconductors such as 1
'C heat treatment is required.
本発明では、／１．０．、Ｓｉｎ、などの無機高融点材
料を巻回された超電導線間に介在させたことにより、巻
回後の巻線部は高温での熱処理が可能なため良特性の超
電導マグネットが製造できる。In the present invention, /1.0. By interposing an inorganic high melting point material such as , Sin, etc. between the wound superconducting wires, the winding portion after winding can be heat-treated at a high temperature, so that a superconducting magnet with good characteristics can be manufactured.
また、ガラス絶縁超電導線の巻線部の空隙部は無機高融
点材料と含浸されたエポキシ樹脂で埋められるため、巻
線部の剛性が向上し、パルスおよび交流用超電導マグネ
ットに十分に適合する機械的特性を有する。In addition, the void in the winding section of the glass-insulated superconducting wire is filled with an inorganic high-melting point material and impregnated epoxy resin, which improves the rigidity of the winding section and makes the machine fully compatible with pulsed and alternating current superconducting magnets. It has certain characteristics.
以下、実施例により本発明を説明する。The present invention will be explained below with reference to Examples.
〔実施例１〕
第１図は本発明にかかる超電導マグネットの断面図であ
り、巻枠（１）にガラス絶縁超電導線を巻回して巻線部
（２）を構成している。第２図は巻線部（２）の部分拡
大断面図である。本実施例に用いたガラス絶縁超電導線
（３）は、銀パイプにイツトリウム系酸化物超電導体を
圧入し、圧延加工により直径１圓にした複合線であり、
この超電導線（３）にＥガラス繊維による編組を厚さ６
０μ被覆してガラス絶縁層（４）とした、このガラス絶
縁超電導線（３）をマシーナブルセラミックス（主成分
：チタン酸アルミニウム）製の巻枠に巻付ける際、ター
ン間に無機高融点材料（５）として直径１．１閣のシリ
カ繊維ローブを、また、各層間に厚さ０．４鵜のシリカ
シートを巻き込んだ、このようにして構成された超電導
マグネットを大気中９００℃で２時間加熱した後、エポ
キシ樹脂（６）を真空含浸した。一方、比較例として、
従来のように上記のガラス絶縁された超電導線を、無機
高融点材料を巻き込むことなしに、密巻きした後、同一
の熱処理を施し、エポキシ樹脂を含浸した。これらの超
電導マグネットについて、得られた実験結果を第１表に
示す。[Example 1] FIG. 1 is a cross-sectional view of a superconducting magnet according to the present invention, in which a glass-insulated superconducting wire is wound around a winding frame (1) to constitute a winding portion (2). FIG. 2 is a partially enlarged sectional view of the winding portion (2). The glass insulated superconducting wire (3) used in this example is a composite wire in which a yttrium-based oxide superconductor is press-fitted into a silver pipe and rolled into a diameter of 1 circle.
This superconducting wire (3) is braided with E glass fiber to a thickness of 6
When this glass insulated superconducting wire (3) coated with 0μ to form a glass insulating layer (4) is wound around a winding frame made of machinable ceramics (main component: aluminum titanate), an inorganic high melting point material ( 5) The superconducting magnet thus constructed, which included a silica fiber lobe with a diameter of 1.1 mm and a silica sheet with a thickness of 0.4 mm between each layer, was heated in the atmosphere at 900°C for 2 hours. After that, epoxy resin (6) was vacuum impregnated. On the other hand, as a comparative example,
The above-mentioned glass-insulated superconducting wire was tightly wound without involving an inorganic high-melting point material as in the conventional method, and then subjected to the same heat treatment and impregnated with epoxy resin. Table 1 shows the experimental results obtained for these superconducting magnets.
ここで、！、達成率とは、短尺試料の！、に対するマグ
ネットテスト時のＩ、の比率である０以上の結果より、
本実施例によれば、熱処理後も十分な層間絶縁性が保た
れ、かつ、高いＩｃ達成率が得られる。here,! , the achievement rate is for short samples! From the result of 0 or more, which is the ratio of I during the magnet test to ,
According to this example, sufficient interlayer insulation is maintained even after heat treatment, and a high Ic achievement rate can be obtained.
〔実施例２］
第３図は、本発明にかかる他の実施例の巻線部の部分拡
大断面図である。本実施例に用いた超電導線０りは、ニ
オブマトリックス中に直径約０．１ ｔｎａのＡｆ−Ｃ
ｕ合金フィラメントを約５７０，０００本埋め込み、そ
の外側を面積率で２０％の銅シースで被覆した外径ＩＭ
の複合線であり、その外側を６０μ厚さのガラス繊維の
絶縁層（４）で被覆しである。このガラス絶縁線材を予
め用意した無機塩液中を通過させて、大気中で９５０″
Ｃに加熱し、最外層として無機高融点材料０ωを被覆し
た。この線材をステンレス製巻枠に密巻きした後、Ｎｂ
、Ａ＃を形成させるために、アルゴン雰囲気中で７００
゛Ｃで７２時間加熱し、冷却後、エポキシ樹脂０ωを真
空含浸した。ここで用いた無機塩液は、Ａ２（ＯＨ）、
（ＣＨ，Ｃ００）、’ ｎＨ，ｏ、ポリエチレンオキシ
ドおよび２０％の水溶性ポリシロキサンの混合液であっ
た。[Embodiment 2] FIG. 3 is a partially enlarged sectional view of a winding portion of another embodiment according to the present invention. The superconducting wire used in this example is an Af-C with a diameter of about 0.1 tna in a niobium matrix.
Approximately 570,000 u-alloy filaments are embedded and the outside is covered with a copper sheath with an area ratio of 20%.
It is a composite wire, and the outside thereof is covered with an insulating layer (4) of glass fiber having a thickness of 60μ. This glass insulated wire was passed through an inorganic salt solution prepared in advance, and
C and coated with an inorganic high melting point material 0Ω as the outermost layer. After tightly winding this wire around a stainless steel reel, Nb
, 700 in an argon atmosphere to form A#.
After heating for 72 hours at °C and cooling, vacuum impregnation with 0Ω epoxy resin was carried out. The inorganic salt solution used here was A2(OH),
(CH,C00),'nH,o, was a mixture of polyethylene oxide and 20% water-soluble polysiloxane.
一方、比較例として、無機塩液処理を施さない線材を用
いて同様のマグネット製作した。これらの超電導マグネ
ットについて、得られた実験結果を第２表に示す。On the other hand, as a comparative example, a similar magnet was manufactured using a wire that was not treated with an inorganic salt solution. Table 2 shows the experimental results obtained for these superconducting magnets.
なお、ヤング率は切出したサンプルについて測定したも
のである。Note that Young's modulus was measured on a cut sample.
以上の結果より、本実施例によれば、熱処理後も十分な
層間絶縁性が保たれるとともに、ヤング率も高く、■、
達成率も高い。From the above results, according to this example, sufficient interlayer insulation is maintained even after heat treatment, Young's modulus is high,
The achievement rate is also high.
以上説明したように本発明の超電導マグネットは、巻回
されたガラス絶縁超電導線間に無機高融点材料を介在さ
せているため、巻線部を所望の条件で熱処理することが
でき、その結果、十分高い超電導特性を有する超電導マ
グネットが得られるとともに、得られた超電導マグネッ
トはヤング率が向上し、パルスまたは交流用途に適合す
る超電導マグネットが得られるという優れた効果がある
。As explained above, in the superconducting magnet of the present invention, since the inorganic high-melting point material is interposed between the wound glass-insulated superconducting wires, the winding portion can be heat-treated under desired conditions, and as a result, A superconducting magnet having sufficiently high superconducting properties can be obtained, and the obtained superconducting magnet has an improved Young's modulus, and has the excellent effect that a superconducting magnet suitable for pulse or alternating current applications can be obtained.
第１図は本発明にがかる一実施例の超電導マグネットの
断面図、第２図は同実施例の巻線部の部分拡大断面図、
第３図は他の実施例の巻線部の部分拡大断面図である。
ｌ・・・巻枠、 ２・・・巻線部、 ３．１３・・・超
電導線、 ４．１４・・・ガラス絶縁層、 ５．１５・
・・無機高融点材料、 ６，１６・・・エポキシ樹脂。FIG. 1 is a sectional view of a superconducting magnet according to an embodiment of the present invention, and FIG. 2 is a partially enlarged sectional view of a winding portion of the same embodiment.
FIG. 3 is a partially enlarged sectional view of the winding portion of another embodiment. l... Winding frame, 2... Winding portion, 3.13... Superconducting wire, 4.14... Glass insulating layer, 5.15.
...Inorganic high melting point material, 6,16...Epoxy resin.
Claims (3)
る超電導マグネットにおいて、前記巻線部の巻回された
ガラス絶縁された超電導線間に無機高融点材料が介在さ
れていることを特徴とする超電導マグネット。(1) A superconducting magnet having a winding portion made of a glass-insulated superconducting wire, characterized in that an inorganic high-melting point material is interposed between the wound glass-insulated superconducting wires of the winding portion. superconducting magnet.
り無機高融点材料をコーティングし、次に、この超電導
線を巻枠に巻回して巻線部を構成し、次に所望の熱処理
を施すことを特徴とする超電導マグネットの製造方法。(2) Glass-insulated superconducting wire is coated with an inorganic high-melting point material through a sol-gel reaction, then this superconducting wire is wound around a winding frame to form a winding section, and then the desired heat treatment is performed. A method for manufacturing a superconducting magnet characterized by the following.
または巻回層間に無機高融点材料成形物を介在させなが
ら巻枠に巻回することを特徴とする超電導マグネットの
製造方法。(3) Glass-insulated superconducting wire between turns and/or
Alternatively, a method for producing a superconducting magnet, which comprises winding the magnet around a winding frame while interposing a molded article of an inorganic high-melting point material between the winding layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31136388A JPH02156608A (en) | 1988-12-09 | 1988-12-09 | Superconducting magnet and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31136388A JPH02156608A (en) | 1988-12-09 | 1988-12-09 | Superconducting magnet and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02156608A true JPH02156608A (en) | 1990-06-15 |
Family
ID=18016265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31136388A Pending JPH02156608A (en) | 1988-12-09 | 1988-12-09 | Superconducting magnet and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02156608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2017018144A1 (en) * | 2015-07-30 | 2018-03-01 | 株式会社日立製作所 | Superconducting coil and manufacturing method thereof |
-
1988
- 1988-12-09 JP JP31136388A patent/JPH02156608A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2017018144A1 (en) * | 2015-07-30 | 2018-03-01 | 株式会社日立製作所 | Superconducting coil and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6344287B1 (en) | High temperature compatible insulation for superconductors and method of applying insulation to superconductors | |
| US3983521A (en) | Flexible superconducting composite compound wires | |
| US4195199A (en) | Superconducting composite conductor and method of manufacturing same | |
| JP5219454B2 (en) | Method for manufacturing a superconductor | |
| JPH09129438A (en) | Oxide superconductive coil and manufacture thereof | |
| JPH02156608A (en) | Superconducting magnet and manufacture thereof | |
| JP2002531922A (en) | Manufacturing method of superconducting tape | |
| JP2004536435A (en) | Method for producing a sheath with electrical insulation and mechanical properties in a conductor | |
| Devred | Insulation systems for Nb/sub 3/Sn accelerator magnet coils manufactured by the wind & react technique | |
| KR20070120497A (en) | Process for producing superconducting wire rod | |
| JPH03261006A (en) | Manufacture of superconductive wire | |
| JPH0125166B2 (en) | ||
| JPS63284720A (en) | Superconducting wire | |
| US6387525B1 (en) | Self insulating substrate tape | |
| JP2592842B2 (en) | Method for manufacturing compound superconducting wire | |
| JPH02216713A (en) | Superconductive wire | |
| JPH0341702A (en) | Superconducting coil | |
| JP3257703B2 (en) | Pulse or AC current lead and method for connecting A15 type compound superconducting stranded wire to said current lead | |
| JPS60154580A (en) | Thermal type superconductive switch | |
| JPS6024569B2 (en) | Compound superconducting coil and its manufacturing method | |
| JPS59218706A (en) | Manufacture of superconductive coil | |
| JPH11260628A (en) | Superconducting coil of high critical temperature and manufacture of the same | |
| JPH04116906A (en) | Ceramic superconductive coil | |
| JPS61214506A (en) | Superconductive coil | |
| JPH0344909A (en) | Manufacture of superconducting coil |