JPS63284720A - Superconducting wire - Google Patents
Superconducting wireInfo
- Publication number
- JPS63284720A JPS63284720A JP62117519A JP11751987A JPS63284720A JP S63284720 A JPS63284720 A JP S63284720A JP 62117519 A JP62117519 A JP 62117519A JP 11751987 A JP11751987 A JP 11751987A JP S63284720 A JPS63284720 A JP S63284720A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- insulating layer
- core
- core body
- superconducting
- 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.)
- Granted
Links
- 239000002887 superconductor Substances 0.000 claims abstract description 26
- 239000000919 ceramic Substances 0.000 claims abstract description 20
- 239000004020 conductor Substances 0.000 claims abstract description 6
- 229910052737 gold Inorganic materials 0.000 claims abstract description 5
- 229910052709 silver Inorganic materials 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 47
- 229910000510 noble metal Inorganic materials 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 4
- 239000002344 surface layer Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052751 metal Inorganic materials 0.000 abstract description 13
- 239000002184 metal Substances 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 abstract description 4
- 229910052697 platinum Inorganic materials 0.000 abstract description 3
- 239000011162 core material Substances 0.000 description 31
- 238000000034 method Methods 0.000 description 9
- 238000005491 wire drawing Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 125000004430 oxygen atom Chemical group O* 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium 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
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011225 non-oxide ceramic Substances 0.000 description 1
- 229910052575 non-oxide ceramic Inorganic materials 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 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
- 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、例えば核磁気共鳴装置用マグネット、粒子加
速器用マグネット等の超電導応用機器などに使用可能な
超電導線に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a superconducting wire that can be used in superconducting application equipment such as magnets for nuclear magnetic resonance apparatuses and magnets for particle accelerators.
「従来の技術］
近時、常電導状態から超電導状態に遷移する臨界温度（
Ｔｃ）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 at which the normal conductive state transitions to the superconducting state (
Various oxide-based superconducting materials are being discovered that exhibit Tc) values higher than the liquid nitrogen temperature.
そして、この種の超電導材料を用いた超電導線としては
、金属被覆層（シース）となる銅製等のパイプ内に前記
超電導材料の粉末を充填し、これに押出加工や圧延加工
等の伸線加工を施して縮径したのち、加熱処理を行−な
ったものが既に試作されている。In order to produce a superconducting wire using this type of superconducting material, powder of the superconducting material is filled into a pipe made of copper or the like that serves as a metal coating layer (sheath), and then subjected to wire drawing processing such as extrusion processing or rolling processing. Prototypes have already been produced in which the diameter has been reduced by applying heat treatment.
「発明が解決しようとする問題点」
ところで、上記のような超電導線を多数本束ねて多心撚
線状とした場合には、線材同士の結合電流を遮断するた
めに、各線材の表面に絶縁被覆を設けることが必要であ
る。この種の絶縁被覆としては、合成樹脂やワニス等を
使用することが考えられるが、これらの物質は耐冷却性
が劣るうえ、熱膨張率が超電導体と著しく異なるために
、液体窒素中で冷却した際には絶縁被覆が脆化し、温度
の変動により破損しやすいという欠点があった。``Problems to be Solved by the Invention'' By the way, when a large number of superconducting wires as described above are bundled into a multi-stranded wire, in order to cut off the coupling current between the wires, the surface of each wire is It is necessary to provide an insulating coating. Synthetic resin, varnish, etc. may be used as this type of insulating coating, but these materials have poor cooling resistance and have a significantly different coefficient of thermal expansion than superconductors, so they cannot be cooled in liquid nitrogen. When this happens, the insulation coating becomes brittle and is easily damaged by temperature fluctuations.
さら１こ、前記構造の超電導線では、超電導材料の加工
性が悪いために伸線加工の際に張力に負けて断線等のト
ラブルを生じやすく、長い線材の製造が困難だった。し
かも、製造された超電導線を実際に使用する場合には、
線材端部の金属シースを剥がして超電導体層を剥き出し
にし、これを機器の端子等に接続する必要があるが、こ
の超電導体層は極めて脆いために接続部で破損しやすく
、取り扱いに不便であるという欠点があった。Furthermore, in the superconducting wire having the above structure, since the superconducting material has poor workability, troubles such as breaking due to tension during wire drawing tend to occur, making it difficult to manufacture long wires. Moreover, when actually using the manufactured superconducting wire,
It is necessary to peel off the metal sheath at the end of the wire to expose the superconductor layer and connect it to equipment terminals, etc. However, this superconductor layer is extremely fragile and easily breaks at the connection, making it inconvenient to handle. There was a drawback.
「問題点を解決するための手段」
本発明は上記の問題を解決するためになされたもので、
少なくともその表層部が常電導材料からなる芯体と、そ
の上に形成された酸化物系超電導体層と、その外方に形
成されたセラミックス絶縁層と、さらに必要によりその
外方に形成された被′ 復層とを具備してなることを
特徴とする。"Means for Solving the Problems" The present invention was made to solve the above problems.
A core body of which at least the surface layer is made of a normal conductive material, an oxide superconductor layer formed on the core body, a ceramic insulating layer formed on the outer side of the core body, and a ceramic insulating layer formed on the outer side of the core body as necessary. It is characterized by comprising a covering layer and a reinforcing layer.
なお、前記芯体の表面はＡ ｇ、 Ａ ｕ、Ｐ を等の
貴金属により構成されていることが望ましい。Note that the surface of the core body is preferably made of noble metals such as Ag, Au, and P.
「実施例」
以下、図面を参照して本発明の実施例を詳細に説明する
。"Embodiments" Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は一実施例の超電導線の断面を示すものであり、
符号ｌは常電導材料からなる断面円形の芯体、２は芯体
ｌ上に形成された酸化物系超電導体層、３は超電導体層
２上に形成されたセラミックス絶縁層、４はこれら全体
を被覆する前記芯体Ｉと同様の材質からなるシース（被
覆層）であり、これらは全て同心円状に形成されている
。FIG. 1 shows a cross section of a superconducting wire according to an example.
Symbol l is a core body with a circular cross section made of a normal conductive material, 2 is an oxide-based superconductor layer formed on the core body l, 3 is a ceramic insulating layer formed on the superconductor layer 2, and 4 is the entirety of these. This is a sheath (covering layer) made of the same material as the core body I, which covers the core body I, and these are all formed in concentric circles.
前記芯体ｌの材質としては、Ｃｕ、 Ｃｕ合金、ＡＩ。The material of the core 1 is Cu, Cu alloy, or AI.
Ａ１合金、Ａｇ、Ａｕ、Ｐｔなどの金属が挙げられ、特
に貴金属以外の材質を用いる場合には、その表面にスパ
ッタ法、めっき法等を用いて貴金属薄膜を形成しておく
ことが望ましい。Examples include metals such as A1 alloy, Ag, Au, and Pt. In particular, when a material other than noble metal is used, it is desirable to form a noble metal thin film on the surface by sputtering, plating, or the like.
前記酸化物系超電導体層２は、Ａ−Ｂ−Ｃｕ−０系など
の超電導材料により形成されている。但し、上記ＡはＳ
ｃ 、Ｙ、Ｌａ 、Ｃｅ 、Ｐｒ 、Ｎｄ 、Ｐｍ 、
Ｓｍ。The oxide superconductor layer 2 is made of a superconducting material such as AB-Cu-0. However, the above A is S
c, Y, La, Ce, Pr, Nd, Pm,
Sm.
Ｅｕ 、Ｇｄ 、Ｔｂ 、Ｄｙ 、Ｈｏ 、Ｅｒ 、Ｔ
ｌｌ１．Ｙｂ 、Ｌｕ等のｍａ族元素から選択される一
種以上の元素を表し、Ｂは、Ｂｅ 、Ｓｒ 、Ｍｇ 、
Ｂａ 、Ｃａ等のアルカリ土類金属元素から選択される
一種以上の元素を表すものとする。Eu, Gd, Tb, Dy, Ho, Er, T
ll1. Represents one or more elements selected from ma group elements such as Yb, Lu, etc., and B represents Be, Sr, Mg,
It represents one or more elements selected from alkaline earth metal elements such as Ba and Ca.
一方、セラミックス絶縁層３はＡ ｌ＊ｏ ｓ、 Ｓ
ｉｏ １２Ｍ ｇｏ ”２Ａ １ｔＯｓ’５ｓ ｉＯｘ
、Ｍ ｇＯ、Ｃｒｔｏ ｓ、 Ｚ ｒｏ を等の酸化物
系セラミックス、あるいはＳｉＣ，５ｉａＮ４．ＢＮ、
ＡＩＮ等の非酸化物系セラミックスの粉末を加圧加熱成
形することにより形成されたものである。なお、ここで
使用するセラミックスが非酸化物系の場合には、酸化物
系超電導体層２の表面に、各種スパッタ法、めっき法等
を用いてＡｇ。On the other hand, the ceramic insulating layer 3 is A l * o s, S
io 12M go ”2A 1tOs'5s iOx
, MgO, Crtos, Zro, etc., or SiC, 5iaN4. BN,
It is formed by pressurizing and heating powder of non-oxide ceramics such as AIN. In addition, when the ceramic used here is a non-oxide type, Ag is deposited on the surface of the oxide type superconductor layer 2 using various sputtering methods, plating methods, etc.
Ａｕ、Ｐｔなどの貴金属薄膜を形成することが望ましい
。It is desirable to form a noble metal thin film such as Au or Pt.
このような超電導線を製造するには、まず、芯体ｌとな
る金属棒の周囲に超電導体材料を付着させる。その手段
としては、前記金属棒を超電導材料粉末を溶媒と混練し
たスラリー中に通したのち、必要に応じて加熱処理を施
し、金属棒の外周面に超電導材料を層状に付着させる方
法、あるいは金属棒上にスパッタ法、蒸着法、ＣＶＤ法
、ＭＯＣＶＤ法、ＭＢＢ法等の薄膜形成技術を用いて超
電導材料の薄膜を形成する方法などが採られる。To manufacture such a superconducting wire, first, a superconducting material is attached around a metal rod serving as a core l. The method is to pass the metal rod through a slurry made by kneading superconducting material powder with a solvent, and then heat treatment as necessary to adhere the superconducting material in a layer on the outer peripheral surface of the metal rod. A method of forming a thin film of a superconducting material on a rod using a thin film forming technique such as a sputtering method, a vapor deposition method, a CVD method, an MOCVD method, or an MBB method is adopted.
次いで、この超電導材料を付着させた金属棒をシース４
となる金属パイプ内に挿入し、これらの間隙にセラミッ
クス絶縁層３を構成するためのセラミックス粉末組成物
を充填する。そして、このパイプに押出加工あるいは圧
延加工等の伸線加工を施して所定の直径まで縮径させた
後、さらに高周波加熱器等により所定の加臓処理を施し
、超電導体層２およびセラミックス絶縁層３を焼成して
超電導線を得る。Next, the metal rod to which this superconducting material is attached is inserted into the sheath 4.
The ceramic powder composition for forming the ceramic insulating layer 3 is inserted into a metal pipe, and the gap between the two is filled with a ceramic powder composition for forming the ceramic insulating layer 3. Then, this pipe is subjected to wire drawing processing such as extrusion processing or rolling processing to reduce the diameter to a predetermined diameter, and then is further subjected to a predetermined charring treatment using a high-frequency heater, etc., to form a superconductor layer 2 and a ceramic insulating layer. 3 to obtain a superconducting wire.
このような構成からなる超電導線にあっては、セラミッ
クス絶縁層３の耐冷却性が優れているうえ、絶縁層３と
超電導体層２の熱膨張率が互いに似通っているため、液
体窒素によって冷却した場合にも、絶縁層３の脆化およ
び温度変動に起因する破損が生じることがない。In a superconducting wire with such a configuration, the ceramic insulating layer 3 has excellent cooling resistance, and the insulating layer 3 and the superconducting layer 2 have similar coefficients of thermal expansion, so they can be cooled with liquid nitrogen. Even in this case, embrittlement of the insulating layer 3 and damage caused by temperature fluctuations do not occur.
また、この超電導線では、その中心に芯体ｌを設けてい
るため、前記伸線加工の際に断線等のトラブルが生じに
くく、従来よりも長尺の線材を容易に製造することがで
きる。しかも、芯体ｌおよびシース４は常電導材ででき
ているため、万が一超電導体層２の超電導状態が破れた
場合には、これら芯体ｌおよびシース４に電流を分流す
ることができ、トラブルを防ぐことができる。In addition, since this superconducting wire has a core l provided at its center, troubles such as wire breakage are less likely to occur during the wire drawing process, and longer wires can be manufactured more easily than before. Moreover, since the core l and sheath 4 are made of a normal conductive material, in the event that the superconducting state of the superconductor layer 2 is broken, the current can be shunted to the core l and sheath 4, causing trouble. can be prevented.
また、この超電導線では、超電導体層２の内部に芯体ｌ
が通っているので、線材端部のシース４およびセラミッ
クス絶縁層３を剥がして超電導体層２を剥き出しにした
場合にも、超電導体層２の脆さを補って接続部における
破損を防ぐことができ、取り扱いが容易であるという利
点も有する。In addition, in this superconducting wire, a core l is provided inside the superconducting layer 2.
passes through the wire, so even if the sheath 4 and ceramic insulating layer 3 at the end of the wire are peeled off to expose the superconductor layer 2, the brittleness of the superconductor layer 2 can be compensated for and damage at the connection can be prevented. It also has the advantage of being easy to handle.
さらに、この例では芯体ｌの表面が貴金属によって構成
されているうえ、セラミックス絶縁層３が非酸化物系で
ある場合には超電導体層２の表面にも貴金属薄膜が形成
されているので、超電導線を焼成する際に、超電導体層
２に含まれる酸素原子が芯体ｌの内部へ、あるいはセラ
ミックス絶縁層３の内部へ拡散することがなく、酸素原
子の不足による超電導体層２の特性低下を防ぐことが可
能である。Furthermore, in this example, the surface of the core l is made of a noble metal, and if the ceramic insulating layer 3 is non-oxide-based, a noble metal thin film is also formed on the surface of the superconductor layer 2. When firing the superconducting wire, the oxygen atoms contained in the superconductor layer 2 do not diffuse into the core l or the ceramic insulating layer 3, and the characteristics of the superconductor layer 2 due to the lack of oxygen atoms are reduced. It is possible to prevent the decline.
なお、以上の例では、芯体ｌを円柱状の金属棒から成形
したが、代わりに中空の管体を用いることも可能である
。その場合には、伸線あるいは加熱を行なう際に中空部
を通して適当な冷媒を通すことができ、過熱に起因する
線材の潰れ等を防ぐことができるうえ、超電導線を使用
する際には、この中空部に液体窒素等の冷媒を通して均
一に線材を冷却できるという利点も得られる。In addition, in the above example, the core body l was formed from a cylindrical metal rod, but it is also possible to use a hollow tube body instead. In this case, an appropriate coolant can be passed through the hollow part during wire drawing or heating, and it is possible to prevent the wire from collapsing due to overheating. Another advantage is that the wire can be uniformly cooled by passing a refrigerant such as liquid nitrogen through the hollow part.
また、第２図に示すように、芯体ｌを炭素繊維強化炭素
複合材料や繊維強化金属などの複合材料のように極めて
抗張力の大きな芯材ＩＡと、その外周を覆う金属層ＩＢ
とから構成することも可能であり、この場合には、芯材
ＩＡにより超電導線の抗張力をさらに高めることが可能
である。In addition, as shown in Fig. 2, the core l is made of a core material IA having extremely high tensile strength, such as a composite material such as a carbon fiber-reinforced carbon composite material or a fiber-reinforced metal, and a metal layer IB covering the outer periphery of the core material IA.
In this case, the tensile strength of the superconducting wire can be further increased by the core material IA.
また、本発明は前記のような単芯の超電導線に限られず
、この上うな単芯の超電導線を多数本束ねて撚線状に成
形加工した、いわゆる極細多芯型の超電導線にも適用す
ることができる。Furthermore, the present invention is not limited to the above-mentioned single-core superconducting wires, but can also be applied to so-called ultrafine multi-core superconducting wires, which are formed by bundling a large number of single-core superconducting wires and forming them into a stranded wire. can do.
さらに、前記の例は断面円形の超電導線であったが、本
発明は断面が四角形状等の異形状あるいは条体状の電線
としても実施可能である。Furthermore, although the above-mentioned example is a superconducting wire with a circular cross section, the present invention can also be implemented with an electric wire having an irregular shape such as a square cross section, or a wire having a strip shape.
「発明の効果」
本発明の超電導線によれば、次のような優れた効果が得
られる。"Effects of the Invention" According to the superconducting wire of the present invention, the following excellent effects can be obtained.
■セラミックス絶縁層の耐冷却性が優れているうえ、絶
縁層と超電導体層それぞれの熱膨張率が近い値であるた
め、液体窒素によって冷却した場合にも、絶縁層が脆化
して温度変動により破損するなどということがない。■The ceramic insulating layer has excellent cooling resistance, and the thermal expansion coefficients of the insulating layer and superconductor layer are close to each other, so even when cooled with liquid nitrogen, the insulating layer becomes brittle due to temperature fluctuations. There is no such thing as damage.
■中心に芯体を設けているため、前記伸線加工の際に断
線等のトラブルが生じにくく、長尺の線材を容易に製造
することができる。(2) Since the core is provided at the center, troubles such as wire breakage are less likely to occur during the wire drawing process, and long wire rods can be easily manufactured.
■被覆層を剥がしたあと超電導体層内部に芯体が通って
いるので、超電導体層の脆さを補って破損などを防ぐこ
とができ、取り扱いが容易である。- Since the core passes inside the superconductor layer after the coating layer is peeled off, it compensates for the fragility of the superconductor layer and prevents breakage, making it easy to handle.
■芯体の表面を貴金属によって構成した場合には、超電
導線を焼成する際に、超電導体層に含まれる酸素原子が
芯体の内部へ拡散することがなく、酸素原子不足による
超電導体層の特性低下を防ぐことが可能である。■If the surface of the core is made of noble metal, the oxygen atoms contained in the superconductor layer will not diffuse into the core when the superconducting wire is fired, and the superconductor layer will not be damaged due to lack of oxygen atoms. It is possible to prevent characteristic deterioration.
第１図は本発明の一実施例の超電導線の断面図、第２図
は本発明の他の実施例の断面図である。
１・・・芯体、２・・・酸化物系超電導体層、３・・・
セラミックス絶縁層、
４・・・シース（被覆層）、
ＩＡ・・・芯材、 ＩＢ・・・金属層。
出廓人藤倉電線株式会社FIG. 1 is a cross-sectional view of a superconducting wire according to one embodiment of the present invention, and FIG. 2 is a cross-sectional view of another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Core body, 2... Oxide-based superconductor layer, 3...
Ceramic insulation layer, 4... Sheath (coating layer), IA... Core material, IB... Metal layer. Shujin Fujikura Electric Wire Co., Ltd.
Claims (2)
と、その上に形成された酸化物系超電導体層と、その外
方に形成されたセラミックス絶縁層と、さらに必要によ
りその外方に形成された被覆層とを具備してなることを
特徴とする超電導線。(1) A core whose surface layer at least is made of a normal conductive material, an oxide-based superconductor layer formed thereon, a ceramic insulating layer formed on the outside of the core, and, if necessary, a core made of a normal conductive material. A superconducting wire comprising a coating layer formed thereon.
により構成されていることを特徴とする特許請求の範囲
第１項記載の超電導線。(2) The superconducting wire according to claim 1, wherein the surface of the core is made of a noble metal such as Ag, Au, or Pt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62117519A JP2592839B2 (en) | 1987-05-14 | 1987-05-14 | Superconducting wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62117519A JP2592839B2 (en) | 1987-05-14 | 1987-05-14 | Superconducting wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63284720A true JPS63284720A (en) | 1988-11-22 |
| JP2592839B2 JP2592839B2 (en) | 1997-03-19 |
Family
ID=14713779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62117519A Expired - Fee Related JP2592839B2 (en) | 1987-05-14 | 1987-05-14 | Superconducting wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2592839B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63292517A (en) * | 1987-05-26 | 1988-11-29 | Sumitomo Electric Ind Ltd | Compound ceramic superconductor |
| JPS6410512A (en) * | 1987-07-01 | 1989-01-13 | Matsushita Electric Ind Co Ltd | Superconductor structure |
| JPS6433817A (en) * | 1987-07-29 | 1989-02-03 | Matsushita Electric Ind Co Ltd | Superconductor |
| US5010053A (en) * | 1988-12-19 | 1991-04-23 | Arch Development Corporation | Method of bonding metals to ceramics |
| US5075285A (en) * | 1987-09-17 | 1991-12-24 | Kernforschungszentrum Karlsruhe Gmbh | Silver alloy sheathing material for ceramic superconducting wires |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63250015A (en) * | 1987-04-04 | 1988-10-17 | Sumitomo Electric Ind Ltd | Wire rod for superconductive magnet |
-
1987
- 1987-05-14 JP JP62117519A patent/JP2592839B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63250015A (en) * | 1987-04-04 | 1988-10-17 | Sumitomo Electric Ind Ltd | Wire rod for superconductive magnet |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63292517A (en) * | 1987-05-26 | 1988-11-29 | Sumitomo Electric Ind Ltd | Compound ceramic superconductor |
| JPS6410512A (en) * | 1987-07-01 | 1989-01-13 | Matsushita Electric Ind Co Ltd | Superconductor structure |
| JPH07106895B2 (en) * | 1987-07-01 | 1995-11-15 | 松下電器産業株式会社 | Superconductor structure |
| JPS6433817A (en) * | 1987-07-29 | 1989-02-03 | Matsushita Electric Ind Co Ltd | Superconductor |
| US5075285A (en) * | 1987-09-17 | 1991-12-24 | Kernforschungszentrum Karlsruhe Gmbh | Silver alloy sheathing material for ceramic superconducting wires |
| US5010053A (en) * | 1988-12-19 | 1991-04-23 | Arch Development Corporation | Method of bonding metals to ceramics |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2592839B2 (en) | 1997-03-19 |
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