JPH01167914A - Superconducting complex cable - Google Patents
Superconducting complex cableInfo
- Publication number
- JPH01167914A JPH01167914A JP62327747A JP32774787A JPH01167914A JP H01167914 A JPH01167914 A JP H01167914A JP 62327747 A JP62327747 A JP 62327747A JP 32774787 A JP32774787 A JP 32774787A JP H01167914 A JPH01167914 A JP H01167914A
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- oxygen
- cable
- ceramic
- silver
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 20
- 239000001301 oxygen Substances 0.000 claims abstract description 20
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 229910052709 silver Inorganic materials 0.000 claims abstract description 9
- 239000004332 silver Substances 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 3
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 3
- 229910052802 copper Inorganic materials 0.000 claims abstract description 3
- 239000010949 copper Substances 0.000 claims abstract description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 3
- 239000002131 composite material Substances 0.000 claims description 30
- 239000000919 ceramic Substances 0.000 abstract description 23
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract 1
- 239000010944 silver (metal) Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 2
- 229910000856 hastalloy Inorganic materials 0.000 description 2
- 229910001026 inconel Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000008961 swelling Effects 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〕
この発明は、Ｙを含む希土類元素（以下、これら元素を
Ｒで示す）、アルカリ土類金属（以下、Ａで示す）、銅
（Ｃυ）および酸素（０）からなるペロブスカイト構造
を有する化合物（以下、この化合物を超電導セラミック
スという）を充填してなる超電導ワイヤを、複数本束ね
てなる超電導複合ケーブルに関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to rare earth elements including Y (hereinafter these elements will be referred to as R), alkaline earth metals (hereinafter referred to as A), and copper (Cυ). The present invention relates to a superconducting composite cable formed by bundling a plurality of superconducting wires filled with a compound having a perovskite structure consisting of and oxygen (0) (hereinafter, this compound is referred to as superconducting ceramics).
超電導の大電流を流すためには、複数本の超電導セラミ
ックス充填ワイヤを束ねた超電導ケーブルが使用される
が、上記超電導ケーブルは、一般に次の方法により製造
されている。In order to flow a large superconducting current, a superconducting cable made by bundling a plurality of superconducting ceramic-filled wires is used, and the above-mentioned superconducting cable is generally manufactured by the following method.
（ａ） 原料粉末として、いずれも平均粒径：１〇−
以下のＲ２Ｏ３粉末、Ａの炭酸塩粉末、ＣｕＯ粉末を用
意し、これら原料粉末を所定の配合組成に配合し、混合
して大気中または酸素雰囲気中で温度二８５０〜９５０
℃にて焼成し、ペロブスカイト構造を有する超電導セラ
ミックスを作製し、これを平均粒径：１０−以下に粉砕
する。(a) As raw material powder, average particle size: 10-
Prepare the following R2O3 powder, A carbonate powder, and CuO powder, blend these raw material powders to a predetermined composition, mix them, and heat them to a temperature of 2850 to 950 in air or oxygen atmosphere.
C. to produce a superconducting ceramic having a perovskite structure, which is then ground to an average particle size of 10- or less.
（ｂ） 上記粉砕した粉末を銀（Ａｇ）製管内に充填
し、両端を密封し、この充填Ａｇ管材にスェージング加
工や溝ロール加工、あるいはダイス加工等の伸線加工を
施し、直径：５＋ｎ＋ｅ以下の充填ワイヤとし、第６図
に示される超電導ワイヤを作製する。(b) The pulverized powder is filled into a silver (Ag) pipe, both ends are sealed, and the filled Ag pipe material is subjected to wire drawing processing such as swaging, groove roll processing, or die processing, and the diameter is 5+n+e or less. A superconducting wire shown in FIG. 6 is manufactured using the filling wire as shown in FIG.
（Ｃ） 上記超電導ワイヤを束ねて、Ａｇ製チューブ
により被覆しケーブルとする。上記ケーブルを必要に応
じてダイス加工し、ついで超電導ワイヤに充填されてい
る超電導セラミックス粉末を焼結するために、大気中ま
たは酸素雰囲気中、温度＝９００〜９５０°Ｃにて熱処
理し、超電導ケーブル製品としていた。(C) The superconducting wires are bundled and covered with an Ag tube to form a cable. The above cable is diced as necessary, and then heat treated at a temperature of 900 to 950°C in air or oxygen atmosphere to sinter the superconducting ceramic powder filled in the superconducting wire. It was a product.
上記従来の技術（ｃ）の超電導セラミックス粉末を焼結
するに際しては、Ａｇの融点（９６０，８℃）に近い温
度＝９００〜９５０℃で行なわれるために、Ａｇの強度
が弱くなり、熱処理中の超電導ケーブルは曲がりやすく
、不注意な曲げは、充填されている超電導セラミックス
の不連続部分を生成する結果となり、取扱いが困難で、
細い超電導ケーブルは上記熱処理中に断線することもあ
った。When sintering the superconducting ceramic powder of conventional technique (c) above, the temperature is close to the melting point of Ag (960.8°C) = 900 to 950°C, so the strength of Ag becomes weaker and during heat treatment. Superconducting cables are easy to bend, and careless bending can result in discontinuities in the filled superconducting ceramics, making them difficult to handle.
Thin superconducting cables sometimes broke during the heat treatment.
上記超電導ワイヤを被覆する材料として、Ａｇ以外の金
属、例えばインコネル、ハステロイ等のＮｉ合金、ステ
ンレス鋼など高温強度が優れた材料の使用も考えられる
が、上記高温強度の優れた材料は酸素の拡散浸透および
排出を行なうことができないため、上記高温強度の優れ
た材料により複数本の超電導ワイヤを被覆して超電導ケ
ーブルを作製すると、充填されている超電導セラミック
スから放出される酸素により超電導ケーブル被覆に膨ら
みが生じ、さらに、上記超電導セラミックス粉末を焼結
した後の降温時に酸素を吸収することができない。As a material for covering the superconducting wire, it is possible to use metals other than Ag, such as Inconel, Ni alloys such as Hastelloy, and materials with excellent high temperature strength such as stainless steel. Therefore, when a superconducting cable is made by covering multiple superconducting wires with the material with excellent high-temperature strength, the superconducting cable coating bulges due to the oxygen released from the filled superconducting ceramics. occurs, and furthermore, the superconducting ceramic powder cannot absorb oxygen when the temperature is lowered after sintering.
したがって、現在のところ超電導ケーブルの最外層被覆
材としてＡｇ以外は考えられないが、超電導ケーブルの
製造には高価なＡｇを大量に使用しなければならず、高
温強度が十分でないために熱処理の取扱いが難しく、さ
らに室温強度も十分でないという問題点があった。Therefore, at present, it is difficult to think of anything other than Ag as the outermost covering material for superconducting cables, but manufacturing superconducting cables requires the use of large quantities of expensive Ag, and its high-temperature strength is not sufficient, making it difficult to handle heat treatment. However, there were other problems in that it was difficult to achieve this, and the strength at room temperature was also insufficient.
そこで、本発明者等は、Ａｇの使用を減らし、しかも高
温および室温強度のすぐれた超電導ケーブルを製造すべ
く研究を行なった結果、Ａｇ部分とＡｇ以外の金属部分
からなりかつ上記Ａｇ部分は内面から外面にわたって存
在するように構成された複合チューブを用意し、上記複
合チューブで複数本の超電導ワイヤを被覆してなる超電
導複合ケーブルは、高温および室温強度にすぐれ、超電
導セラミックスから放出される酸素は上記複合チューブ
のＡｇ部分から外部に拡散放出されるので複合チューブ
に膨みを生じせしめることがなく、また上記複合ケーブ
ルに充填されている超電導セラミックスを焼結したのち
に、酸素は上記複合チューブのＡｇ部分を通して超電導
セラミックスに拡散吸収することができるという知見を
得たのである。Therefore, the present inventors conducted research to reduce the use of Ag and to manufacture a superconducting cable with excellent high-temperature and room-temperature strength.As a result, the present inventors found that the cable consists of an Ag part and a metal part other than Ag, and the above-mentioned Ag part is on the inner surface. A superconducting composite cable made by preparing a composite tube that extends over the outer surface of the superconducting wire and covering a plurality of superconducting wires with the composite tube has excellent high-temperature and room-temperature strength, and the oxygen released from the superconducting ceramics is Oxygen is diffused and released from the Ag part of the composite tube to the outside, so that the composite tube does not swell. Furthermore, after the superconducting ceramics filled in the composite cable is sintered, oxygen is released from the composite tube. They found that it is possible to diffuse and absorb into superconducting ceramics through the Ag part.
この発明は、かかる知見にもとづいてなされたものであ
って、
超電導セラミックスを充填してなる複数本のＡｇ被覆超
電導ワイヤと、
銀部分と銀以外の金属部分からなり、上記銀部分は内面
から外面にわたって存在している複合チューブからなり
、
上記複数本の銀被覆超電導ワイヤを上記複合チューブに
より被覆してなる超電導複合ケーブルに特徴を有するも
のである。This invention was made based on this knowledge, and consists of a plurality of Ag-coated superconducting wires filled with superconducting ceramics, a silver part and a metal part other than silver, and the silver part is arranged from the inner surface to the outer surface. The present invention is characterized by a superconducting composite cable consisting of a composite tube existing over the entire area, and comprising the plurality of silver-coated superconducting wires covered by the composite tube.
上記超電導複合ケーブルの一部分の切断概略図が第１〜
５図に示されている。第１〜５図において、１はＡｇ以
外の金属部分、２はＡｇ部分、３は超電導セラミックス
、４はＡｇであり、第６図は超電導セラミックス３とＡ
ｇ４とからなる超電導ワイヤの一部切断概略図である。A schematic cutaway diagram of a portion of the above superconducting composite cable is shown in the first to
This is shown in Figure 5. In Figures 1 to 5, 1 is a metal part other than Ag, 2 is an Ag part, 3 is a superconducting ceramic, 4 is Ag, and Figure 6 shows the superconducting ceramic 3 and A
FIG. 3 is a partially cutaway schematic diagram of a superconducting wire made of g4.
上記Ａｇ以外の金属部分１は、高温強度を有する金属、
例えばインコネル、ハステロイ等のＮｉ基合金、５ＵＳ
３０４等のオーステナイト系ステンレス鋼などが好まし
い。The metal portion 1 other than Ag is a metal having high temperature strength,
For example, Ni-based alloys such as Inconel and Hastelloy, 5US
Austenitic stainless steel such as 304 is preferred.
上記Ａｇ部分２は、複合チューブの内面から外面にわた
って存在しており、超電導セラミックス３から放出され
た酸素を拡散放出することができるとともに外部から酸
素を拡散吸収することもできる。したがって、上記Ａｇ
部分２が複合チューブにあるおかげで、超電導セラミッ
クス３から放出された酸素による複合チューブの膨らみ
発生を防止することができ、大気中または酸素雰囲気中
での熱処理により、酸素を外部から拡散浸透せしめて超
電導セラミックス３へ酸素を補給することができるので
ある。The Ag portion 2 exists from the inner surface to the outer surface of the composite tube, and can diffuse and release oxygen released from the superconducting ceramic 3, and can also diffuse and absorb oxygen from the outside. Therefore, the above Ag
Because the portion 2 is in the composite tube, it is possible to prevent the composite tube from swelling due to oxygen released from the superconducting ceramic 3, and by heat treatment in the air or oxygen atmosphere, oxygen can be diffused and penetrated from the outside. Oxygen can be supplied to the superconducting ceramics 3.
上述のように、上記複合チューブは、Ａｇ以外の金属部
分１とＡｇ部分２とから構成されているが、上記Ａｇ部
分２の形状は、′ＩＢ１図のように長円であってもよく
、第２図の如く長方形であってもよく、さらに第３図の
如く真円であってもよいが、第４図および第５図の如く
平行帯またはら腕帯であってもよく、上記形状に限定さ
れるものではない。As mentioned above, the composite tube is composed of the metal part 1 other than Ag and the Ag part 2, but the shape of the Ag part 2 may be an ellipse as shown in Figure 'IB1, It may be rectangular as shown in Fig. 2, it may be a perfect circle as shown in Fig. 3, it may be a parallel band or diagonal band as shown in Figs. It is not limited to.
さらに、上記第１〜５図の超電導複合ケーブルの断面は
円形であるが、断面形状は円形に限定されることなく、
四角形、六角形等の多角形、長円形その他Ｈｇの断面形
状をとることができる。Furthermore, although the cross section of the superconducting composite cable shown in FIGS. 1 to 5 above is circular, the cross-sectional shape is not limited to circular.
It can take a polygonal shape such as a quadrangle or a hexagon, an oval shape, or any other Hg cross-sectional shape.
つぎに、この発明を実施例にもとづいて具体的に説明す
る。Next, the present invention will be specifically explained based on examples.
原料粉末として、いずれも平均粒径：６ρのＹＯ粉末、
Ｂ ａ ＣＯａ粉末、およびＣｕＯ粉粉
末３用意し、これら粉末をＹ Ｏ： １５．１３％
、Ｂ ａ ＣＯ： ５２．８９％、Ｃｕ Ｏ： ３
１．９８％（以上重量％）の割合で混合し、この混合粉
末を、大気中、温度＝９１０℃、１０時間保持の条件で
焼成し、平均粒径；２．５μｓに粉砕して、ＹＢａ２Ｃ
ｕ３０γの組成を有するペロブスカイト構造の超電導セ
ラミックス粉末を作製した。As raw material powder, YO powder with average particle size: 6ρ,
Prepare B a COa powder and CuO powder 3, and mix these powders with Y O: 15.13%
, B a CO: 52.89%, Cu O: 3
YBa2C
A superconducting ceramic powder with a perovskite structure having a composition of u30γ was produced.
上記超電導セラミックス粉末を、内径：５ｍｍＸ肉厚：
１關×長さ： ２００ｍｍの寸法のＡｇ製ケースに充
填し、真空封着した後、冷間にてロータリースェージン
グ加工と溝ロール加工を施し、最終的に溝ロール加工を
施して線径： ２．０ｍｒａ×長さ８１．７００ｍｍ
の超電導ワイヤを４０本作製した。The above superconducting ceramic powder was heated to an inner diameter of 5 mm x wall thickness:
1 length x length: After filling into an Ag case with dimensions of 200 mm and vacuum sealing, cold rotary swaging and groove roll processing are performed, and finally groove roll processing is applied to wire diameter: 2.0mra x length 81.700mm
Forty superconducting wires were fabricated.
一方、Ａｇ部分とＳ Ｕ Ｓ ３０４オーステナイトス
テンレス鋼からなる内径：１０ｍｍＸ肉厚： １．５
ｍｍＸ長さ： １０００ｍｍの寸法の複合チューブを用
意し、上記４０本の超電導ワイヤのうち２０本を上記チ
ューブに充填し、上記超電導ワイヤ充填複合チューブに
ダイス加工を施して、直径ニアｍｍの超電導複合ケーブ
ルを作製した。上記超電導複合ケーブルを、酸素雰囲気
中、温度＝９２０°Ｃ，１５時間保持の条件にて熱処理
を行ない、上記超電導複合ケーブルの特性を測定した結
果、
臨界温度Ｔｃ１２’に
臨界電流密度Ｊ ｅ ： ４３００Ａ／ｃ／であった。On the other hand, it is made of Ag part and SUS 304 austenitic stainless steel, inner diameter: 10 mm x wall thickness: 1.5
mm x length: Prepare a composite tube with dimensions of 1000 mm, fill the tube with 20 of the 40 superconducting wires, and dice the superconducting wire-filled composite tube to form a superconducting composite with a diameter of near mm. I made a cable. The superconducting composite cable was heat-treated in an oxygen atmosphere at a temperature of 920°C for 15 hours, and the characteristics of the superconducting composite cable were measured. As a result, the critical temperature Tc12' and the critical current density J e : 4300A It was /c/.
一方、比較のために、残りの２０本の超電導ワイヤを、
内径：１０ｍｍＸ肉厚： １．５ｍｍＸ長さ： １０
００龍の寸法の純Ａｇ製チューブに充填し、ダイス加工
を施して、直径ニアｍｍの超電導ケーブルを作製し、上
記超電導複合ケーブルと同一の条件で熱処理を行い、そ
の特性を測定した結果、
臨界温度Ｔｃ・９２″に
臨界電流密度Ｊ ｃ ： ４３１０Ａ／ｃＪであった。On the other hand, for comparison, the remaining 20 superconducting wires are
Inner diameter: 10mm x Wall thickness: 1.5mm x Length: 10
A superconducting cable with a diameter of about 0.0 mm was prepared by filling a pure Ag tube with dimensions of 0.00 mm and performing die processing, and heat-treated it under the same conditions as the superconducting composite cable described above. As a result of measuring its characteristics, criticality was determined. The critical current density J c was 4310 A/cJ at a temperature Tc·92″.
この発明の超電導複合ケーブルと従来の超電導ケーブル
を比較しても、超電導特性についての差はほとんどなく
、この発明の超電導複合ケーブルは、従来の超電導ケー
ブルよりも高価なＡｇの使用量を少なくすることかでき
、使用材料が高温強度にすぐれているために最終熱処理
工程における断線等のトラブルもなく歩留りよく製造す
ることができ、さらに室温強度もすぐれていることから
上記超電導複合ケーブルの敷設時における取扱いも特別
な注意をする必要がなく、敷設後の保守点検も簡単なも
のとなるというすぐれた効果を奏するものである。Comparing the superconducting composite cable of this invention and conventional superconducting cables, there is almost no difference in superconducting properties.The superconducting composite cable of this invention uses less expensive Ag than conventional superconducting cables. Because the materials used have excellent high-temperature strength, they can be manufactured with high yields without problems such as wire breakage during the final heat treatment process, and also have excellent room-temperature strength, which makes it easy to handle when installing the superconducting composite cable. This has the excellent effect that no special precautions are required and maintenance and inspection after installation is simple.
第１図〜第５図は、この発明の超電導複合ケーブルの一
部切断概略図、
第６図は、Ａｇ被覆超電導ワイヤの一部切断概略図であ
る。
１・・・Ａｇ以外の金属部分
２・・・Ａｇ部分
３・・・超電導セラミックス
４・・・Ａｇ1 to 5 are partially cutaway schematic diagrams of a superconducting composite cable of the present invention, and FIG. 6 is a partially cutaway schematic diagram of an Ag-coated superconducting wire. 1...Metal part other than Ag 2...Ag part 3...Superconducting ceramics 4...Ag
Claims (1)
からなるペロブスカイト構造を有する化合物を充填して
なる複数本の銀被覆超電導ワイヤと、 銀部分と銀以外の金属部分からなり、上記銀部分は内面
から外面にわたって存在している複合チューブからなり
、 上記複数本の銀被覆超電導ワイヤを上記複合チューブに
より被覆してなることを特徴とする超電導複合ケーブル
。[Scope of Claims] A plurality of silver-coated superconducting wires filled with a compound having a perovskite structure consisting of a rare earth element including Y, an alkaline earth metal, copper, and oxygen, and a silver portion and a metal portion other than silver. The superconducting composite cable is characterized in that the silver portion is made of a composite tube extending from the inner surface to the outer surface, and the plurality of silver-coated superconducting wires are covered with the composite tube.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62327747A JPH01167914A (en) | 1987-12-24 | 1987-12-24 | Superconducting complex cable |
| US07/408,502 US4983576A (en) | 1987-12-24 | 1988-12-24 | Superconducting composite wire and cable, processor for fabricating them |
| KR1019890701581A KR900701018A (en) | 1987-12-24 | 1988-12-24 | Superconducting Composite Wires and Cables and Their Manufacturing Method |
| DE3853914T DE3853914T2 (en) | 1987-12-24 | 1988-12-24 | SUPRA-CONDUCTIVE COMPOSITE WIRE AND SUPRAL-CONDUCTIVE COMPOSITE CABLE AND THEIR PRODUCTION METHOD. |
| PCT/JP1988/001329 WO1989006040A1 (en) | 1987-12-24 | 1988-12-24 | Superconductive composite wire and cable and method of producing them |
| EP89900912A EP0346499B1 (en) | 1987-12-24 | 1988-12-24 | Superconductive composite wire and cable and method of producing them |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62327747A JPH01167914A (en) | 1987-12-24 | 1987-12-24 | Superconducting complex cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01167914A true JPH01167914A (en) | 1989-07-03 |
Family
ID=18202529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62327747A Pending JPH01167914A (en) | 1987-12-24 | 1987-12-24 | Superconducting complex cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01167914A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2672713A1 (en) * | 1991-02-13 | 1992-08-14 | Inst Nat Polytech Grenoble | FEEDING COMPONENT OF THE CREDIT CARD TYPE. |
| JP2000353440A (en) * | 1999-05-06 | 2000-12-19 | Alcatel | Superconductive strand with high critical temperature and its manufacture |
-
1987
- 1987-12-24 JP JP62327747A patent/JPH01167914A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2672713A1 (en) * | 1991-02-13 | 1992-08-14 | Inst Nat Polytech Grenoble | FEEDING COMPONENT OF THE CREDIT CARD TYPE. |
| JP2000353440A (en) * | 1999-05-06 | 2000-12-19 | Alcatel | Superconductive strand with high critical temperature and its manufacture |
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