JPS63262808A - Joining structure of superconductor - Google Patents
Joining structure of superconductorInfo
- Publication number
- JPS63262808A JPS63262808A JP9788487A JP9788487A JPS63262808A JP S63262808 A JPS63262808 A JP S63262808A JP 9788487 A JP9788487 A JP 9788487A JP 9788487 A JP9788487 A JP 9788487A JP S63262808 A JPS63262808 A JP S63262808A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- superconductor
- base tube
- superconducting
- substrate
- 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 title claims abstract description 35
- 238000005304 joining Methods 0.000 title abstract description 4
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 9
- 238000005253 cladding Methods 0.000 claims description 21
- 239000000470 constituent Substances 0.000 claims description 9
- 239000010410 layer Substances 0.000 abstract description 37
- 239000002356 single layer Substances 0.000 abstract description 36
- 238000010030 laminating Methods 0.000 abstract 1
- 239000010409 thin film Substances 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 17
- 229910052802 copper Inorganic materials 0.000 description 17
- 239000010949 copper Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 12
- 239000000203 mixture Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 238000010304 firing Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 4
- 150000001342 alkaline earth metals Chemical class 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000220259 Raphanus Species 0.000 description 1
- 235000006140 Raphanus sativus var sativus Nutrition 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000657 niobium-tin Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- AFNRRBXCCXDRPS-UHFFFAOYSA-N tin(ii) sulfide Chemical compound [Sn]=S AFNRRBXCCXDRPS-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
この発明は、基体上に酸化物系超電導体からなる超電導
層を形成する超電導体の接合構造に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a superconductor bonding structure in which a superconducting layer made of an oxide-based superconductor is formed on a substrate.
「従来の技術」
従来より、超電導マグネットコイル等の８３電導体の接
合構造として、例えばＮ ｂ −’Ｉ” ＋合金などの
合金系超電導材料からなる細線を常電導体からなる基体
上に巻き付けた構造や、あるいはＮｂ３Ｓｎなどの化合
物系超電導材を基体上に半田付けした後、この化合物系
超電導材を機械的に切削してコイル状に加工する構造が
知られている。``Prior art'' Traditionally, as a bonding structure for 83 electrical conductors such as superconducting magnet coils, thin wires made of alloy-based superconducting materials such as Nb-'I''+ alloys are wound around a base made of a normal conductor. A structure is known in which a compound-based superconducting material such as Nb3Sn is soldered onto a substrate, and then this compound-based superconducting material is mechanically cut to form a coil shape.
ところで近時、臨界温度が５０°に以上のＬａ−Ｂａ−
Ｃｕ−０系、Ｙ −Ｂ ａ−Ｃｕ−０系などの一般に化
学式ＡｘＢｙＣｕｚＯｓ（Ａ：Ｓｃ、Ｙ、Ｌａ＝−の周
期律表第１１１Ａ族金属元素、Ｂ ：Ｂａ、Ｓ ｒ、Ｂ
ｅ・・・のアルカリ土類金属）で表されるペロブスガイ
ト型の酸化物系超電導体が次々と見い出されつつある。By the way, recently, La-Ba-
Generally, Cu-0 series, Y-Ba-Cu-0 series, etc. have the chemical formula AxByCuzOs (A: Sc, Y, La = - metal element of group 111A of the periodic table, B: Ba, S r, B
Perovskite-type oxide superconductors represented by alkaline earth metals such as e... are being discovered one after another.
これら酸化物系超電導体は、上記の合金系あるいは化合
物系超電導体に比べて臨界温度が高く、液体窒素温度以
上で超電導材料とされるなどの優れた特性を有すること
から、超電導マグネットコイルなどへの適用、実用化が
期待されている。These oxide-based superconductors have superior properties such as a higher critical temperature than the alloy-based or compound-based superconductors mentioned above, and can be used as superconducting materials at temperatures above liquid nitrogen temperature, so they are used in superconducting magnet coils, etc. is expected to be applied and put into practical use.
「発明が解決しようとする問題点」
しかしながら、上記の酸化物系超電導体では、該酸化物
系超電導体が酸化物であることから銅などの金属からな
る常電導体との接合が悪いなどの問題がある。"Problems to be Solved by the Invention" However, since the oxide superconductor is an oxide, there are problems such as poor bonding with a normal conductor made of metal such as copper. There's a problem.
「問題点を解決するための手段」
そこでこの発明の超電導体の接合構造では、常電導体か
らなる基体と酸化物系超電導体からなる超電導層との間
に、上記基体の構成元素と上記酸化物系超電導体の構成
元素からなるクレーディング層を形成し、このクレーデ
ィング層中における上記基体の構成元素濃度を基体側で
高く、超電導層側で低くしたことにより上記問題点を解
決した。"Means for Solving the Problem" Therefore, in the superconductor bonding structure of the present invention, the constituent elements of the base and the oxidized The above problem was solved by forming a cladding layer consisting of the constituent elements of a physical superconductor, and making the concentration of the constituent elements of the base in the cladding layer higher on the base side and lower on the superconducting layer side.
「実施例」
第１図はこの発明の超電導体の接合構造を超電導体マグ
ネットコイルに適用した場合の一実施例を示す図であっ
て、図中符号ｌは超電導マグネットコイルである。この
超電導マグネットコイルｌは、円管状の基管２と、この
基管２の上に形成された螺旋状の超電導回路３と、これ
ら基管２および超電導回路３の間に形成されたクレーデ
ィング層４とからなっている。Embodiment FIG. 1 is a diagram showing an embodiment in which the superconductor joining structure of the present invention is applied to a superconductor magnet coil, and reference numeral 1 in the figure indicates the superconductor magnet coil. This superconducting magnet coil l includes a circular base tube 2, a spiral superconducting circuit 3 formed on the base tube 2, and a cladding layer formed between the base tube 2 and the superconducting circuit 3. It consists of 4.
基管２は常電導体からなるものであり、常電導体として
は銅が好適に用いられる。超電導回路３は、基管２の外
周面上に後述するクレーディング層４を介して形成され
た酸化物系超電導体からなるものである。ここで、酸化
物系超電導体としては化学式Ａ ＸＢ ｙＣＵＺＯ３で
表されるペロブスガイト型のらのが用いられる。このベ
ロブスガイト型のものは、周期律表第１Ｉ［Ａ族金属元
素（上記化学式中Ａ）の酸化物粉末とアルカリ土類金属
（上記化学式中Ｂ）の炭酸塩粉末と酸化銅粉末とが適宜
な比率で配合され、焼成されて形成された乙のであり、
これらの粉末の混合比は、求める酸化物系超電導体によ
って異なるが、例えば上記化学式中（こおいて（Ｋ＋ｙ
＝ １ 、ｚ＝ １ ）、（Ｘ十ｙ＝ ２ 、ｚ＝
１）、（ｘ＋ｙ＝２．ｚ＝１．２５ ）、を満足する
ような配合とされる。The base pipe 2 is made of a normal conductor, and copper is suitably used as the normal conductor. The superconducting circuit 3 is made of an oxide superconductor formed on the outer peripheral surface of the base tube 2 via a cladding layer 4, which will be described later. Here, as the oxide-based superconductor, a perovskite-type radish represented by the chemical formula A XB yCUZO3 is used. This belobusgate-type material is produced by using an oxide powder of a group I metal element (A in the above chemical formula) of the periodic table, a carbonate powder of an alkaline earth metal (B in the above chemical formula), and a copper oxide powder as appropriate. It is formed by mixing the proportions and firing,
The mixing ratio of these powders varies depending on the desired oxide superconductor, but for example, in the above chemical formula (where (K+y
= 1, z= 1), (X y= 2, z=
1), (x+y=2.z=1.25).
クレーディング層４は、基管２の外周面と超電導回路３
との間に形成された螺旋状のもので、第２図に示すよう
に複数の薄厚の単層４ａ、４ｂ・・が積層されてなるも
のである。単層４ａ、４ｂ・・は、上記超電導回路３と
なる酸化物系超電導体を構成する元素（すなわちスカン
ジウム（Ｓｃ）、イツトリウム（Ｙ）、ランタン（Ｌａ
）などのランタニドを包含する周期律表第１Ｉ［Ａ族金
属元素とバリウム（Ｂａ）。The cladding layer 4 is formed between the outer peripheral surface of the base tube 2 and the superconducting circuit 3.
As shown in FIG. 2, a plurality of thin single layers 4a, 4b, etc. are laminated. The single layers 4a, 4b, .
) of the periodic table including lanthanides such as Group I metal elements and barium (Ba).
ストロンチウム（Ｓｒ）、カルシウム（Ｃａ）、ベリリ
ウム（Ｂｅ）などのアルカリ土類金属と銅と酸素）に基
管２を構成する元素、すなわち本実施例では銅元素を加
えた組成を有するもので、それぞれこの銅元素の濃度が
異なって形成されたものである。It has a composition of alkaline earth metals such as strontium (Sr), calcium (Ca), and beryllium (Be), copper, and oxygen), plus the elements constituting the base tube 2, that is, copper element in this example, Each layer is formed with a different concentration of this copper element.
基管２に接する単層４ａは、銅元素の占める割合が大き
く、上述の酸化物系超電導体を構成する元素と銅元素と
の重量比が１；４ 程度とされる。また、単層４ａの上
に形成された単層４ｂはその重量比が２・３程度、この
上に形成された単層４ｃは３：２ 程度、そして単層４
ｃの上に形成された超電導回路３に接する単層４ｄは酸
化物系超電導体を構成する元素からなる材料の割合が大
きく、その重量比が４二１ 程度とされる。このような
単層４ａ、４−ｂ・・の配列により、クレーディング層
４はその銅元素の濃度を基管２側で高く、また超電導回
路３側で低くした濃度勾配を有したものとされる。The single layer 4a in contact with the base tube 2 has a large proportion of the copper element, and the weight ratio of the elements constituting the above-mentioned oxide-based superconductor to the copper element is about 1:4. Furthermore, the weight ratio of the single layer 4b formed on the single layer 4a is about 2.3, the weight ratio of the single layer 4c formed thereon is about 3:2, and the weight ratio of the single layer 4b formed on the single layer 4a is about 3:2.
The single layer 4d formed on the superconducting circuit 3 and in contact with the superconducting circuit 3 has a large proportion of material made of elements constituting the oxide superconductor, and the weight ratio thereof is about 421. Due to the arrangement of the single layers 4a, 4-b, etc., the cladding layer 4 has a concentration gradient in which the concentration of the copper element is high on the base tube 2 side and low on the superconducting circuit 3 side. Ru.
このような構造の超電導マグネットコイル１を作製する
には、第３図に示すようにまず基管２外周面上に焼成、
スパッタリング、真空蒸着などの手段によって単層４ａ
に対応する円筒状の単層体５ａを形成し、さらに単層体
５ｂｑ ５ｃ、５ｄを順次形成する。ここで、単層体
５ａを形成する場合に例えば焼成で行うには、上記単層
４ａを構成する材料の粉末、すなわち周期律表第ｍＡ族
金属元素の酸化物粉末とアルカリ土類金属の炭酸塩粉末
と酸化銅粉末と金属銅の粉末などを、焼成されて成形さ
れた際に化学式Ａ ＸＢ ｙＣｕｚｏ ｓで表される酸
化物系超電導体と銅との重量比が１；４ となるように
配合し、これに水、バインダー等を適宜加えてペースト
状とし、このペースト状のものを基管２上に固着して加
熱焼成する。この場合、単層体５＋１は基管２を構成す
る銅元素の割合が上述したように高く、よって基管２に
近い性状を有するため、基管２に強固に接合されろ。ま
た、単層体５ｂ、５ｃ、５ｄを形成するにも、同様にし
て各単層体に対応する単層に応じて配合されかつペース
ト状に調整されたものを順次積層し焼成する。この場合
にも、それぞれの単層体５ｂ、５ｃ、５ｄはその下層と
なる単層体に近い組成を有することから、これら下層の
単層体に強固に接合される。また、焼成する場合、焼成
は各単層体毎に行ってもよく、また予めそれぞれの単層
体に対応したペースト状の材料を順次積層して一度に焼
成を行ってもよい−
次いで、最外周側に形成された単層体５ｄの上に、超電
導回路３に対応する酸化物系超電導体の材料のペースト
状に調整したものを固着し、焼成１、て円筒状の超電導
体６とする。この場合にも、超電導体６はその下層の単
層体５ｄに近い組成を有することから、該単層体５ｄに
強固に接合される。また、焼成する場合、上記単層体と
なるペースト状の材料と同時に焼成して単層体と同時に
超電導体６を形成してもよい。To manufacture the superconducting magnet coil 1 having such a structure, first, as shown in FIG.
A single layer 4a is formed by sputtering, vacuum deposition, etc.
A cylindrical single-layer body 5a corresponding to the above is formed, and further single-layer bodies 5bq, 5c, and 5d are sequentially formed. Here, when forming the single layer body 5a, for example, by firing, the powder of the materials constituting the single layer 4a, that is, the oxide powder of the mA group metal element of the periodic table and the carbonate of an alkaline earth metal. Salt powder, copper oxide powder, metallic copper powder, etc. are fired and shaped so that the weight ratio of the oxide superconductor represented by the chemical formula A x B y Cuzos and copper is 1:4. The mixture is mixed with water, a binder, etc. as appropriate to form a paste, and this paste is fixed on the base tube 2 and heated and fired. In this case, the monolayer body 5+1 has a high proportion of the copper element constituting the base tube 2 as described above, and therefore has properties similar to those of the base tube 2, so it should be firmly joined to the base tube 2. Further, to form the monolayer bodies 5b, 5c, and 5d, similarly, materials mixed according to the monolayer corresponding to each monolayer body and adjusted to a paste-like state are sequentially laminated and fired. In this case as well, since each of the single layer bodies 5b, 5c, and 5d has a composition close to that of the single layer body below it, it is firmly bonded to the single layer body below it. In addition, when firing, firing may be performed for each single layer, or paste materials corresponding to each single layer may be sequentially laminated in advance and fired at once. A paste-like material of an oxide-based superconductor corresponding to the superconducting circuit 3 is fixed onto the single-layer body 5d formed on the outer circumferential side, and is fired to form a cylindrical superconductor 6. . In this case as well, since the superconductor 6 has a composition close to that of the single-layer body 5d underlying it, it is firmly bonded to the single-layer body 5d. In addition, when firing, the superconductor 6 may be formed at the same time as the paste material forming the single layer by firing at the same time as the paste material forming the single layer.
その後、この超電導６および上記単層体５ａ。After that, this superconductor 6 and the monolayer body 5a.
５ｂ、５ｃ、５ｄに切削加工等の周知の機賊的手段、あ
るいはエツチング等の周知の化学的手段などを施してそ
の一部を除去し、第１図に示すように螺旋状の超電導回
路３を形成しかつこの超電導回路３と基管２との間に単
層４ａ、４ｂ、４ｃ、４ｄからなるクレーディング層４
を形成し、これにより超電導マグネットコイル１を得る
。5b, 5c, and 5d are subjected to well-known mechanical means such as cutting, or well-known chemical means such as etching to remove a part of them, and form a spiral superconducting circuit 3 as shown in FIG. A cladding layer 4 consisting of single layers 4a, 4b, 4c, and 4d is formed between the superconducting circuit 3 and the base tube 2.
is formed, thereby obtaining a superconducting magnet coil 1.
このような構造の超電導マグネットコイル１にあっては
、基管２と超電導回路３との間にクレーディング層４を
形成したので、このクレーディング層４が基管２側では
該基管２にまた超電導回路３側では該超電導回路に近い
組成を有していることから、例えば膨張係数などの特性
が基管２と超電導回路３との間で急激に変化することな
くクレーディング層４によってこれらの特性の差が段階
的に変化し、したがって上記膨張係数なとの特性の差に
起因するヒートンヨックなどの不都合か防止される。ま
た、超電導回路３と基管２との接合を直接でなくそれぞ
れに組成の近いクレーディング層４を介して間接的に行
うため、性状の異なる超電導回路３と基管２との接合が
容易に行える。In the superconducting magnet coil 1 having such a structure, since the cladding layer 4 is formed between the base tube 2 and the superconducting circuit 3, this cladding layer 4 is attached to the base tube 2 on the base tube 2 side. In addition, since the superconducting circuit 3 side has a composition similar to that of the superconducting circuit, the properties such as the expansion coefficient do not change rapidly between the base pipe 2 and the superconducting circuit 3, and the cladding layer 4 The difference in properties between the two changes stepwise, and therefore, disadvantages such as heat-on-yoke caused by the difference in properties such as the expansion coefficient are prevented. In addition, since the superconducting circuit 3 and the base tube 2 are not directly joined, but indirectly through the cladding layer 4, which has a similar composition to each other, it is easy to join the superconducting circuit 3 and the base tube 2, which have different properties. I can do it.
なお、上記実施例においては、クレーディング層４を複
数の単層により形成したが、銅元素の濃度勾配を有した
単一の層により形成してもよく、その場合にこの単一の
層を形成するには、例えば酸化物系超電導体からなる管
体を形成し、次にこの管体の内部孔に円柱状の銅を挿入
し、次いでこれら管体および銅を適宜な手段により加熱
溶融して銅を管体中に拡散せしめ、その後円柱状の銅を
除いて銅の濃度勾配を有する管状の単一層を得る。In the above embodiment, the cladding layer 4 is formed of a plurality of single layers, but it may also be formed of a single layer having a concentration gradient of the copper element. To form a superconductor, for example, a tube made of an oxide superconductor is formed, a cylindrical copper is inserted into the internal hole of the tube, and then the tube and the copper are heated and melted by an appropriate means. The copper is diffused into the tube, after which the cylindrical copper is removed to obtain a tubular monolayer with a copper concentration gradient.
また、上記実施例では円管状の超電導マグネットコイル
を示したが、他に例えば第４図に示すように円板状の基
体７の上に螺旋状の超電導回路８を形成１１、これら基
体７と超電導回路８との間にクレーディング層９を形成
した超電導マグネットコイルでもよい、
゛ さらに、本発明を第５図に示すような超電導線１０
に適用してもよい。この超電導線ｌＯは、銅、アルミニ
ウム、硫化スズなどの常電導体からなる基線１１上にク
レーディング層１２を介して酸化物系超電導体からなる
超電導層１３を形成（、たものである。ここで、クレー
ディング層１２は、超電導層Ｉ３を構成する元素に基線
１１を構成する元素を加えた組成を有するもので、基線
１１を構成する元素の濃度が基線ｌｌ側で高く、超電導
層１３側で低くなるように構成されたものである。Further, although the above embodiment shows a superconducting magnet coil having a circular tube shape, in addition, for example, as shown in FIG. A superconducting magnet coil having a cladding layer 9 formed between it and a superconducting circuit 8 may also be used. Furthermore, the present invention can be applied to a superconducting wire 10 as shown in FIG.
May be applied to This superconducting wire 1O has a superconducting layer 13 made of an oxide-based superconductor formed on a base line 11 made of a normal conductor such as copper, aluminum, or tin sulfide via a cladding layer 12. The cladding layer 12 has a composition in which the elements constituting the base line 11 are added to the elements constituting the superconducting layer I3, and the concentration of the elements constituting the base line 11 is high on the side of the base line 11, and the concentration of the elements constituting the base line 11 is high on the side of the superconducting layer 13. It is designed so that it is low.
「発明の効果」
以上説明したように、この発明の超電導体の接合構造は
、常電導体からなる基体と酸化物系超電導体からなる超
電導層との間に、上記基体の構成元素と上記酸化物系超
電導体の構成元素からなるクレーディング層を形成し、
このクレーディング層中における上記基体の構成元素濃
度を基体側で高く、超電導層側で低くしたものであるか
ら、例えば膨張係数などの特性が基体と超電導層との間
で急激に変化することなくクレーディング層によってこ
れらの特性の差が徐々に変化し、したがって上記膨張係
数などの特性の差に起因するヒートンヨックなどを防止
することができ、よって温度変化による熱歪み等の不都
合を防止することができる。"Effects of the Invention" As explained above, in the superconductor bonding structure of the present invention, the constituent elements of the base and the oxidized Forming a cladding layer consisting of the constituent elements of a physical superconductor,
Since the concentration of the constituent elements of the substrate in this cladding layer is high on the substrate side and low on the superconducting layer side, properties such as the coefficient of expansion do not change suddenly between the substrate and the superconducting layer. The difference in these properties gradually changes depending on the cladding layer, and therefore it is possible to prevent heat-on yoke caused by the difference in properties such as the above-mentioned expansion coefficient, thereby preventing disadvantages such as thermal distortion due to temperature changes. Can be done.
ま１こ、超電導層と基体との接合を直接でなくそれぞれ
に組成の近いクレーディング層を介して間接的に行うた
め、性状の異なる超電導層と基体との接合を容易に行う
ことができる。First, since the superconducting layer and the substrate are bonded not directly but indirectly through cladding layers having similar compositions, it is possible to easily bond the superconducting layer and the substrate, which have different properties.
第１図ないし第３図はこの発明の超′電導体の接合構造
を超電導マグネットコイルに適用した場合の一実施例を
示す図であって、第１図は超電導マグネットコイルを示
す部分断面図、第２図は要部拡大断面図、第３図はこの
超電導マグネットコイルの製造方法を説明するための要
部拡大断面図、第４図はこの発明を超電導マグネットコ
イルに適用し１こ場合の他の実施例を示す図であって、
超電導マグネットコイルの該略構成図、第５図はこの発
明を超電導線に適用した場合の一実施例を示す図であっ
て、超電導線の概略構成図である。
１・・・・・・超電導マグネットコイル、２・・・・・
・基管、３．８・・・・・・超電導回路、
４．９．１２・・・・クレーディング層、７・・・・・
・基体、１０・・・・・・超電導線、１１・・・・・・
基線、１３・・・・・・超電導層。1 to 3 are diagrams showing an embodiment in which the superconductor joining structure of the present invention is applied to a superconducting magnet coil, and FIG. 1 is a partial sectional view showing the superconducting magnet coil; FIG. 2 is an enlarged cross-sectional view of the main part, FIG. 3 is an enlarged cross-sectional view of the main part for explaining the manufacturing method of this superconducting magnet coil, and FIG. It is a figure showing an example of
FIG. 5 is a schematic configuration diagram of a superconducting magnet coil, and is a diagram showing an embodiment of the present invention applied to a superconducting wire, and is a schematic configuration diagram of a superconducting wire. 1...Superconducting magnet coil, 2...
・Base tube, 3.8...Superconducting circuit, 4.9.12...Clading layer, 7...
・Substrate, 10...Superconducting wire, 11...
Base line, 13... superconducting layer.
Claims (1)
超電導層を形成する超電導体の接合構造であって、 上記基体と超電導層との間に、上記基体の構成元素と上
記酸化物系超電導体の構成元素からなるクレーディング
層を形成し、このクレーディング層中における上記基体
の構成元素濃度を基体側で高く、超電導層側で低くした
ことを特徴とする超電導体の接合構造。[Scope of Claims] A superconductor bonding structure in which a superconducting layer made of an oxide-based superconductor is formed on a substrate made of a normal conductor, wherein constituent elements of the substrate are disposed between the substrate and the superconducting layer. and a cladding layer consisting of the constituent elements of the oxide superconductor, and the concentration of the constituent elements of the base in the cladding layer is high on the base side and low on the superconducting layer side. joint structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9788487A JPH0719688B2 (en) | 1987-04-21 | 1987-04-21 | Superconductor junction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9788487A JPH0719688B2 (en) | 1987-04-21 | 1987-04-21 | Superconductor junction structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63262808A true JPS63262808A (en) | 1988-10-31 |
| JPH0719688B2 JPH0719688B2 (en) | 1995-03-06 |
Family
ID=14204176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9788487A Expired - Lifetime JPH0719688B2 (en) | 1987-04-21 | 1987-04-21 | Superconductor junction structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0719688B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03242387A (en) * | 1989-12-11 | 1991-10-29 | Ngk Insulators Ltd | Bismuth-based superconducting layer-metal composite body |
| JPH04220966A (en) * | 1990-12-21 | 1992-08-11 | Nippon Telegr & Teleph Corp <Ntt> | Connecting wire and method and device for manufacturing the same |
| US5168259A (en) * | 1989-09-19 | 1992-12-01 | Semiconductor Energy Laboratory Co., Ltd. | Superconducting coil |
-
1987
- 1987-04-21 JP JP9788487A patent/JPH0719688B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5168259A (en) * | 1989-09-19 | 1992-12-01 | Semiconductor Energy Laboratory Co., Ltd. | Superconducting coil |
| JPH03242387A (en) * | 1989-12-11 | 1991-10-29 | Ngk Insulators Ltd | Bismuth-based superconducting layer-metal composite body |
| JPH04220966A (en) * | 1990-12-21 | 1992-08-11 | Nippon Telegr & Teleph Corp <Ntt> | Connecting wire and method and device for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0719688B2 (en) | 1995-03-06 |
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