JPH01241781A - Connection configuration of oxide-superconductor and connection method thereof - Google Patents
Connection configuration of oxide-superconductor and connection method thereofInfo
- Publication number
- JPH01241781A JPH01241781A JP6764388A JP6764388A JPH01241781A JP H01241781 A JPH01241781 A JP H01241781A JP 6764388 A JP6764388 A JP 6764388A JP 6764388 A JP6764388 A JP 6764388A JP H01241781 A JPH01241781 A JP H01241781A
- Authority
- JP
- Japan
- Prior art keywords
- oxide superconductor
- oxide
- metal
- intermediate layer
- superconductor
- 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
- 239000002887 superconductor Substances 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 63
- 239000002184 metal Substances 0.000 claims abstract description 63
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000001301 oxygen Substances 0.000 claims abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000000919 ceramic Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000007769 metal material Substances 0.000 abstract description 14
- 229910052702 rhenium Inorganic materials 0.000 abstract description 3
- 229910000978 Pb alloy Inorganic materials 0.000 abstract description 2
- 229910000756 V alloy Inorganic materials 0.000 abstract description 2
- 229910052741 iridium Inorganic materials 0.000 abstract description 2
- 229910052762 osmium Inorganic materials 0.000 abstract description 2
- 229910052716 thallium Inorganic materials 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- 229910052693 Europium Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910052691 Erbium Inorganic materials 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910052769 Ytterbium Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229910052706 scandium Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 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
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
この発明は、磁気浮上列車、核融合炉、単結晶引上装置
、磁気分離装置、医療装置、磁気推進船等に用いられる
超電導マグネットコイルや電力輸送用等に用いられる超
電導線、ジョセフソン素子などの超電導素子、超電導配
線、磁気シールド材などに用いられる酸化物超電導体の
接合構造に関する。[Detailed Description of the Invention] "Industrial Application Field" This invention is applicable to superconducting magnet coils used in magnetic levitation trains, nuclear fusion reactors, single crystal pulling devices, magnetic separation devices, medical devices, magnetic propulsion ships, etc. The present invention relates to bonding structures of oxide superconductors used in superconducting wires used for power transport, superconducting elements such as Josephson elements, superconducting wiring, magnetic shielding materials, etc.
「従来の技術」
最近に至り、常電導状態から超電導状態へ遷移する臨界
温度（Ｔ ｃ）が液体窒素温度を超える値を示す酸化物
超電導体が種々発見されている。この種の酸化物超電導
体は、一般式Ａ −Ｉ３−Ｃｕ−０（ただし、ＡはＹ、
Ｓｃ、Ｌａ、Ｙｂ、Ｅｒ、Ｅｕ、Ｈｏ、Ｄｙ等の周期律
表ｍａ族元素の１種以上を示し、ＢはＭｇ。"Prior Art" Recently, various oxide superconductors have been discovered whose critical temperature (Tc) for transitioning from a normal conductive state to a superconducting state exceeds the liquid nitrogen temperature. This type of oxide superconductor has the general formula A -I3-Cu-0 (where A is Y,
Indicates one or more elements of group ma of the periodic table, such as Sc, La, Yb, Er, Eu, Ho, Dy, etc., and B is Mg.
Ｃａ、Ｓｒ、Ｂａ等の周期律表Ｉｌａ族元素のＩＦＩｔ
以上を示す。）で示される酸化物などであり、液体ヘリ
ウムで冷却することが必要であった従来の合金系あるい
は金属間化合物系の超電導体と比較して格段に有利な冷
却条件で使用できることから、実用上極めて有望な超電
導材料として研究がなされている。IFIt of group Ila elements of the periodic table such as Ca, Sr, Ba, etc.
The above is shown. ), and can be used under much more advantageous cooling conditions than conventional alloy-based or intermetallic compound-based superconductors, which require cooling with liquid helium. It is being studied as an extremely promising superconducting material.
［発明が解決しようとする課ｇＪ
しかしながら、上記のような酸化物超電導体は金属と高
強度に接続するのが困難な問題があった。[Issues to be Solved by the InventiongJ However, the above-mentioned oxide superconductor has a problem in that it is difficult to connect it to metal with high strength.
この原因としては、上記のような酸化物超電導体をはじ
めとして、一般にセラミックスと金属とを接合させる際
には、セラミックスと金属とが金属結合や化学的結合に
よって接合しているのではなく、単にセラミックス表面
の凹凸に金属が入り込んで単純な機械的接合により接合
されているからである。The reason for this is that when bonding ceramics and metals, including the oxide superconductors mentioned above, the ceramics and metals are not simply bonded by metallic or chemical bonds. This is because the metal penetrates into the unevenness of the ceramic surface and is bonded by simple mechanical bonding.
そして、セラミックスと金属との接合強度を向上させる
ために、セラミックスの表面にＡｕ、Ｐｔなどの非酸化
性金属を蒸着して中間層を形成し、この中間層上に金属
を接合させることにより、中間層と金属とを金属結合に
より強固に接合するとともに、セラミックスと中間層間
の接触面積を大きくしてセラミックスと金属との接合強
度を向上させる方法も考えられている。しかし、このよ
うな接合方法を用いても、セラミックスと中間層間の結
合は、上述のような単純な機械的接合となっているため
に、接合強度が十分得られない問題がある。また、この
セラミックスが酸化物超電導体である場合、この酸化物
超電導体と中間層間に大きな接触抵抗を生じてしまう問
題がある。In order to improve the bonding strength between ceramic and metal, non-oxidizing metals such as Au and Pt are deposited on the surface of the ceramic to form an intermediate layer, and the metal is bonded onto this intermediate layer. A method has also been considered in which the intermediate layer and the metal are firmly joined by metal bonding, and the contact area between the ceramic and the intermediate layer is increased to improve the bonding strength between the ceramic and the metal. However, even if such a bonding method is used, the bond between the ceramic and the intermediate layer is a simple mechanical bond as described above, so there is a problem that sufficient bonding strength cannot be obtained. Further, when the ceramic is an oxide superconductor, there is a problem in that a large contact resistance is generated between the oxide superconductor and the intermediate layer.
本発明は上記事情に鑑みてなされたもので、金属あるい
はセラミックスからなる接続体と酸化物超電導体との接
続において、高い接合強度が得られ、かつ接触抵抗を小
さくすることのできる接続構造および接続方法の提供を
目的としている。The present invention has been made in view of the above circumstances, and is a connection structure and connection that can obtain high bonding strength and reduce contact resistance in connection between a connecting body made of metal or ceramics and an oxide superconductor. The purpose is to provide a method.
「課題を解決するための手段」
上記目的達成のために、本発明の酸化物超電導体の接続
構造においては、酸化物超電導体と金属あるいはセラミ
ックスからなる接続体との接続構造であって、接続体と
酸化物超電導体との間に、酸化物超電導体と酸素を媒介
とする共有結合を起こす金属材料からなる中間層を介在
させたらのである。"Means for Solving the Problems" In order to achieve the above object, the connection structure of an oxide superconductor of the present invention is a connection structure of an oxide superconductor and a connection body made of metal or ceramics, An intermediate layer made of a metal material that forms a covalent bond with the oxide superconductor via oxygen is interposed between the body and the oxide superconductor.
また、酸化物超電導体と接続体との接続方法としては、
酸化物超電導体と接続体との間に、酸化物超電導体と酸
素を媒介とする共有結合を起こす金属材料からなる中間
層を介在させた後、熱処理を行うことが好ましい。In addition, as a connection method between the oxide superconductor and the connecting body,
It is preferable to interpose between the oxide superconductor and the connector an intermediate layer made of a metal material that forms a covalent bond with the oxide superconductor through oxygen, and then heat treatment is performed.
「作用」
上記のように摺成された酸化物超電導体の接続構造にお
いては、中間層の金属と酸化物超電導体中の金属元素と
が、Ｍ ｉ −０−Ｍ ｉｉ （ただしＭｉは酸化物超
電導体中の金属元素を示し、Ｍ ｉｉは中間層の金属を
示す。）の共有結合が起こりやすく、このため中間層と
酸化物超電導体を強固に接合させることができる。"Function" In the connection structure of the oxide superconductor formed as described above, the metal of the intermediate layer and the metal element in the oxide superconductor have a relationship between M i -0-M ii (where Mi is an oxide M ii indicates a metal element in the superconductor, and M ii indicates a metal in the intermediate layer.) Covalent bonds are likely to occur, and therefore the intermediate layer and the oxide superconductor can be firmly bonded.
そして、上記の中間層と酸化物超電導体間の共有結合を
促進させるために、酸化物超電導体と接続体との間に中
間層を介在させた後、熱処理を行うことが好ましい。In order to promote covalent bonding between the intermediate layer and the oxide superconductor, heat treatment is preferably performed after interposing the intermediate layer between the oxide superconductor and the connecting body.
「実施例」
実施例について図面を参照して説明する。第１図は本発
明による酸化物超電′導体の接続構造の一例を示す図で
あって、この接続構造では、酸化物超電導体！と金属電
極２め間に中間ＨＪ３を介在させ、酸化物超電導体１お
よび金属電極２の各々を中間５３と接合することにより
、酸化物超電導体ｌと金属電極２とを機械的、電気的に
接合してなるものである。"Example" An example will be described with reference to the drawings. FIG. 1 is a diagram showing an example of a connection structure for oxide superconductors according to the present invention. In this connection structure, oxide superconductors! By interposing the intermediate HJ3 between the oxide superconductor 1 and the metal electrode 2 and joining each of the oxide superconductor 1 and the metal electrode 2 to the intermediate 53, the oxide superconductor 1 and the metal electrode 2 are mechanically and electrically connected. It is made by joining.
上記酸化物超電導体Ｉは、Ａ −Ｂ −Ｃｕ−０（ただ
し、ＡはＹ、Ｓｃ、Ｌａ、Ｙｂ、Ｅｒ、Ｅｕ、Ｉ−ｇｏ
、Ｄｙ等の周期律表Ｈａ族元素の１種以上またはＩ３ｉ
等の周期律表ｖｂ族元素の１種以上またはＴＩ等の周期
律表ｍｂ族元素の１種以上を示し、ＢはＭｇ、Ｃａ、Ｓ
ｒ、Ｂａ等の周期律表■ａ族元素の１種以上を示す。）
で示される酸化物超電導体、例えばＹ ＩＢ ａｒｃ
ＬＩ３０ ？−Ｘ。The above oxide superconductor I is A-B-Cu-0 (where A is Y, Sc, La, Yb, Er, Eu, I-go
, one or more elements of the Ha group of the periodic table such as Dy, or I3i
represents one or more elements of group VB of the periodic table such as
Indicates one or more elements of group ■a of the periodic table, such as r, Ba, etc. )
An oxide superconductor represented by, for example, Y IB arc
LI30? -X.
ｉ３ｉ、 Ｓｒ ｕ Ｃａ ｖ Ｃｕ Ｙ ＯＸ（た
だし、０．５≦ ｕｌｏ、２≦ｖ、１≦ｙである。）、
Ｔ １ｔＩ３ ａｔＣａｔｃ ｕｓＯｘなどが好適に使
用される。なお、この酸化物超電導体！の形状は、特に
限定されることなく、薄板状、厚板状、バルク状、線状
、パイプ状、テープ状、柱状などの種々の形状のものを
用いることができる。i3i, Sru Ca v Cu Y OX (0.5≦ulo, 2≦v, 1≦y),
T 1tI3 atCatc usOx and the like are preferably used. Furthermore, this oxide superconductor! The shape is not particularly limited, and various shapes such as a thin plate, a thick plate, a bulk, a line, a pipe, a tape, and a column can be used.
上記金属電極２の材料としては、銅、銀、アルミニウム
などの良導電性金属材料が好適に用いられる。As the material for the metal electrode 2, a highly conductive metal material such as copper, silver, or aluminum is preferably used.
上記中間層３の材料としては、酸化物超電導体１と酸素
を媒介とする共有結合を起こす金属材料が使用され、例
えばＢａ−Ｐｂ合金、Ｒｅ、 Ｅｕ、 Ｒｃ＋。As the material for the intermediate layer 3, a metal material that forms a covalent bond with the oxide superconductor 1 via oxygen is used, such as Ba-Pb alloy, Re, Eu, Rc+.
Ｏｓ、Ｉｒ、ＴＩ、Ｓ ｒ−Ｖ合金などの１種以上が好
適に使用される。また、この中間層３の厚さは適宜設定
されるが、数μｍ〜数百μｍ程度の厚さとするのが望ま
しい。One or more of Os, Ir, TI, Sr-V alloys, etc. are preferably used. Further, the thickness of this intermediate layer 3 is set appropriately, but it is desirable to set the thickness to about several μm to several hundred μm.
上述の接続構造を形成するには、まず酸化物超電導体ｌ
上に中間層３を形成する。中間層３の形成方法としては
、中間層３の金属材料を、スパッタリング法、真空蒸着
法、プラズマＰＶＤ法などの薄膜形成方法を用いて酸化
物超電導体！上に薄膜形成する方法や、上記金属材料を
加熱溶融した溶湯中に酸化物超電導体ｌを通過させ、そ
の表面に金属材料を付着させる方法や、薄膜状の金属材
料を酸化物超電導体１上にクラツデイングする方法など
種々の方法を用いることができる。次に、この中間層３
上に、銅や銀などの金属を接合して金属電極２を形成す
る。中間層３上に金属電極層２を形成する方法としては
、上述と同様のスパッタリング法などの薄膜形成方法を
用いて薄膜形成する方法や、薄板状の金１ｉＬＪ極２を
、ハンダなどの金属接着剤を用いて接合させる方法など
が好適に用いられる。To form the above-mentioned connection structure, first, an oxide superconductor l
An intermediate layer 3 is formed thereon. The intermediate layer 3 is formed by using a thin film forming method such as sputtering, vacuum evaporation, or plasma PVD to form the metal material of the intermediate layer 3 into an oxide superconductor! There is a method of forming a thin film on the oxide superconductor 1, a method of passing the oxide superconductor 1 through a molten metal made by heating and melting the above metal material, and attaching the metal material to the surface of the oxide superconductor 1, and a method of forming a thin film of the metal material on the oxide superconductor 1. Various methods can be used, such as a method of cladding. Next, this middle layer 3
A metal electrode 2 is formed by bonding a metal such as copper or silver thereon. The metal electrode layer 2 can be formed on the intermediate layer 3 by forming a thin film using a thin film forming method such as the sputtering method similar to that described above, or by bonding a thin plate of gold 1iLJ electrode 2 with metal such as solder. A method of bonding using an agent is preferably used.
このように構成された酸化物超電導体！と金属電極２の
接続構造にあっては、酸化物超電導体１と金属電極２の
間に、酸化物超電導体ｌと酸素を媒介とする共有結合を
起こす金属材料からなる中間層３を介在させたので、中
間層３の金属と酸化物超電導体！中の金属元素とを、Ｍ
ｉ −０−Ｍ ｉｉ （ただしＭｉは酸化物超電導体
！中の金属元素を示し、Ｍｉｉは中間Ｅ３の金属を示す
）のように共有結合させることによって、中間！Ｊ３と
酸化物超電導体１を強固に接合することができ、酸化物
超電導体ｌと金属電極２とを高い接合強度でかつ接触抵
抗の小さい状聾で接続することができる。An oxide superconductor configured like this! In the connection structure between the oxide superconductor 1 and the metal electrode 2, an intermediate layer 3 made of a metal material that forms a covalent bond with the oxide superconductor 1 through oxygen is interposed between the oxide superconductor 1 and the metal electrode 2. Therefore, the metal and oxide superconductor of intermediate layer 3! The metal element inside, M
i -0-M ii (where Mi indicates the metal element in the oxide superconductor!, and Mii indicates the metal in the intermediate E3), by covalently bonding the intermediate! J3 and the oxide superconductor 1 can be firmly bonded, and the oxide superconductor l and the metal electrode 2 can be connected with high bonding strength and with low contact resistance.
ところで、上述のように、酸化物超電導体１と金属電極
２との間に中間層３を形成して酸化物超電導体！と金属
電極２の接続を行う場合、金属電極２と中間層３とは、
両者を金属結合させて容易に強固な接合を行うことがで
きる。一方、中間層３と酸化物超電導体！との間に、上
述したＭ ｉ −０−Ｍ ｉｉ （ただしＭｉは酸化物
超電導体ｌ中の金属元素を示し、Ｍｌｌは中間Ｂ３の金
属を示す）のような共有結合を起こさせて両者を接合さ
せるためには、第１図に示すように酸化物超電導体ｌ上
に、中間Ｆａ３と金属電極２を積層形成した後に、真空
中あるいは窒素ガス、アルゴンガスなどの不活性雰囲気
中で熱処理を施すことが望ましい。この熱処理条件は、
中間層３の金属材料や中間層３および金属電極２の厚さ
などによって適宜設定されるが、通常１００〜２００℃
の温度で数十分〜数時間程度とするのが好ましい。この
熱処理によって、中間層３の金属は、酸化物超電導体ｌ
の酸素と結合して中間層３の金属と酸化物超電導体１の
金属元素間に起こるＭ ｉ −０−Ｍ ｉｉ （ただし
Ｍｉは酸化物超電導体ｌ中の金属元素を示し、Ｍｉｉは
中間層３の金属を示す）のような共有結合が促進され中
間５３と酸化物超電導体ｌとが強固に接合される。By the way, as mentioned above, the intermediate layer 3 is formed between the oxide superconductor 1 and the metal electrode 2 to form an oxide superconductor! When connecting the metal electrode 2 to the metal electrode 2, the metal electrode 2 and the intermediate layer 3 are
A strong bond can be easily achieved by metal bonding the two. On the other hand, intermediate layer 3 and oxide superconductor! A covalent bond such as M i -0-M ii (where Mi indicates the metal element in the oxide superconductor l, and Mll indicates the metal in the intermediate B3) is caused between the two. In order to bond, as shown in Figure 1, after layering intermediate Fa3 and metal electrode 2 on oxide superconductor l, heat treatment is performed in vacuum or in an inert atmosphere such as nitrogen gas or argon gas. It is desirable to apply This heat treatment condition is
It is set appropriately depending on the metal material of the intermediate layer 3, the thickness of the intermediate layer 3 and the metal electrode 2, etc., but is usually 100 to 200°C.
Preferably, the temperature is about several tens of minutes to several hours. By this heat treatment, the metal of the intermediate layer 3 becomes the oxide superconductor l.
M i -0-M ii occurs between the metal of the intermediate layer 3 and the metal element of the oxide superconductor 1 by combining with the oxygen of Covalent bonds such as those shown in Fig. 3) are promoted, and the intermediate 53 and the oxide superconductor l are firmly bonded.
したがって、酸化物超電導体Ｉ上に、中間層３と金属電
極２を積層形成した後に、不活性雰囲気中で熱処理を施
すことにより、中間層３の金属と酸化物超電導体ｌの金
属元素間に起こる共有結合を促進させることができ、酸
化物超電導体１と中間層３とを強固に接合することがで
きる。Therefore, after the intermediate layer 3 and the metal electrode 2 are laminated on the oxide superconductor I, heat treatment is performed in an inert atmosphere to create a bond between the metal of the intermediate layer 3 and the metal element of the oxide superconductor I. The covalent bond that occurs can be promoted, and the oxide superconductor 1 and the intermediate layer 3 can be firmly bonded.
なお、酸化物超電導体１と接続する接続体は、上記金属
電極２に限定されることなく、他の金属導体、あるいは
酸化物超電導体をはじめとするセラミックス材料であっ
ても、上記金属電極２と同様に酸化物超電導体！と良好
に接続することができる。Note that the connecting body to be connected to the oxide superconductor 1 is not limited to the metal electrode 2, but may be another metal conductor or a ceramic material including an oxide superconductor. As well as oxide superconductors! It can be well connected with.
（実験例）
厚さ！■の板状のＹ −Ｂ ａ−Ｃｕ−０系超電導体の
表面に、Ｂ ａ−Ｐ ｂ合金、ＲｅおよびＥｕの各金属
材料を、各々厚さ２０μｍとなるように成膜して中間層
を形成した。次いで各々の中間層上に銅線をハンダ付け
して接合した後、これらを窒素雰囲気中において、１５
０℃で２０分間の熱処理を行った。そして、上記の接合
操作により酸化物超電導体と銅線との接合を柊えた各試
料を実施例１〜３とし、以下の実験を行った。(Experiment example) Thickness! On the surface of the plate-shaped Y-B a-Cu-0 superconductor of (2), metal materials of B a-P b alloy, Re, and Eu were deposited to a thickness of 20 μm each to form an intermediate layer. was formed. Next, after soldering and bonding copper wires onto each intermediate layer, these were heated for 15 minutes in a nitrogen atmosphere.
Heat treatment was performed at 0° C. for 20 minutes. Then, the following experiments were conducted using each sample in which the bond between the oxide superconductor and the copper wire was removed by the above-described bonding operation as Examples 1 to 3.
上記の各試料を用い、液体窒素温度１こお１する酸化物
超電導体と銅線間の接触抵抗を１ｉｌ１１定した。また
、酸化物超電導体と銅線間の密着強度（褒１離弘１度）
を測定した。Using each of the above samples, the contact resistance between the oxide superconductor and the copper wire was determined to be 1il11 at a liquid nitrogen temperature of 1k. In addition, the adhesion strength between the oxide superconductor and copper wire (1 degree)
was measured.
なお、上記実施例との比較のため１こ、上８己実施例と
同様の酸化物超電導体上１こ、ＡｕおよびＰｔを厚さ２
０μｍとなるように成膜して中間層を形成し、更にこれ
らの中間層上（こ銅線を）１ンダ付：すして接合し、上
記と同様の熱処理を施した試料（比較例１および２）を
作成し、上δ己と同様の実験を行った。In addition, for comparison with the above example, one layer was placed on the same oxide superconductor as in the example, and Au and Pt were coated to a thickness of 2.
Samples (Comparative Example 1 and 2) was created and the same experiment as above was conducted.
上記実施例および比較例の実験結果を表１１こ示す。Table 11 shows the experimental results of the above examples and comparative examples.
以下余白
表 １
表！に示す通り、本発明による接続では、高い密着強度
が得られ、かつ接触抵抗を小さくできろことが確認され
た。Margin table below 1 table! As shown in FIG. 2, it was confirmed that the connection according to the present invention can provide high adhesion strength and reduce contact resistance.
「発明の効果」
本発明は、以上説明したように構成されているので、以
下に記載する効果を奏する。"Effects of the Invention" Since the present invention is configured as described above, it produces the effects described below.
酸化物超電導体と接続体の接続構造にあっては、酸化物
超電導体と接続体の間に酸化物超電導体と酸素を媒介と
した共有結合を起こす金属材料からなる中間層を介在さ
せたので、中間層の金属と酸化物超電導体中の金属元素
とをＭ ｉ −０−Ｍ ｉｉ （ただしＭｉは酸化物超
電導体中の金属元素を示し、Ｍｉｉは中間層の金属を示
す）のように共有結合させることによって、中間層と酸
化物超電導体を強固に接合することができ、酸化物超電
導体と接続体とを高い接合強度でかつ接触抵抗の小さい
状態で接続することができる。In the connection structure between the oxide superconductor and the connector, an intermediate layer made of a metal material that forms a covalent bond with the oxide superconductor through oxygen is interposed between the oxide superconductor and the connector. , the metal in the intermediate layer and the metal element in the oxide superconductor are expressed as M i -0-M ii (where Mi represents the metal element in the oxide superconductor and Mii represents the metal in the intermediate layer). By covalent bonding, the intermediate layer and the oxide superconductor can be firmly bonded, and the oxide superconductor and the connecting body can be connected with high bonding strength and low contact resistance.
また、酸化物超電導体と接続体の間に中間層を介在させ
た後、熱処理を施すことにより、中間層の金属と酸化物
超電導体の金属元素間に起こる共有結合を促進させるこ
とができ、酸化物超電導体と中間層とを強固に接合する
ことができる。In addition, by interposing an intermediate layer between the oxide superconductor and the connecting body and then performing heat treatment, it is possible to promote covalent bonding between the metal of the intermediate layer and the metal element of the oxide superconductor. The oxide superconductor and the intermediate layer can be firmly bonded.
また、酸化物超電導体を電気機能素子として用いた場合
、リード線を酸化物超電導体にワイヤーボンディングす
るときに接触抵抗が小さいので、接続部のジュール発熱
を少なくすることができ、このジュール発熱によるクエ
ンチを起き難くすることができる。In addition, when an oxide superconductor is used as an electrical functional element, the contact resistance is small when wire bonding the lead wire to the oxide superconductor, so Joule heat generation at the connection part can be reduced. It can make quenching more difficult.
第１図は本発明の酸化物超電導体の接続構造の１例を示
す断面図である。
！・・・酸化物超電導体、２・・・金属電極（接続体）
、３・・・中間層。FIG. 1 is a sectional view showing an example of a connection structure of an oxide superconductor according to the present invention. ! ...Oxide superconductor, 2...Metal electrode (connector)
, 3... middle class.
Claims (2)
なる接続体との接続構造であって、酸化物超電導体と接
続体との間に、酸化物超電導体と酸素を媒介とする共有
結合を起こす金属材料からなる中間層を介在させたこと
を特徴とする酸化物超電導体の接続構造。(1) A connection structure between an oxide superconductor and a connecting body made of metal or ceramics, in which a metal causes a covalent bond between the oxide superconductor and the connecting body through oxygen. A connection structure of oxide superconductors characterized by interposing an intermediate layer made of a material.
なる接続体との接続方法であって、酸化物超電導体と接
続体との間に、酸化物超電導体と酸素を媒介とする共有
結合を起こす金属材料からなる中間層を介在させた後、
熱処理を行うことを特徴とする酸化物超電導体の接続方
法。(2) A method of connecting an oxide superconductor and a connecting body made of metal or ceramics, in which a metal causes a covalent bond between the oxide superconductor and the connecting body through oxygen. After interposing an intermediate layer of material,
A method for connecting oxide superconductors, characterized by performing heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6764388A JPH01241781A (en) | 1988-03-22 | 1988-03-22 | Connection configuration of oxide-superconductor and connection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6764388A JPH01241781A (en) | 1988-03-22 | 1988-03-22 | Connection configuration of oxide-superconductor and connection method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01241781A true JPH01241781A (en) | 1989-09-26 |
Family
ID=13350894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6764388A Pending JPH01241781A (en) | 1988-03-22 | 1988-03-22 | Connection configuration of oxide-superconductor and connection method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01241781A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7679328B2 (en) * | 2005-10-26 | 2010-03-16 | Denso Corporation | Apparatus for detecting charged state of secondary battery |
| CN104917025A (en) * | 2015-07-08 | 2015-09-16 | 北京依米康科技发展有限公司 | Method for conductive connection of cables |
-
1988
- 1988-03-22 JP JP6764388A patent/JPH01241781A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7679328B2 (en) * | 2005-10-26 | 2010-03-16 | Denso Corporation | Apparatus for detecting charged state of secondary battery |
| CN104917025A (en) * | 2015-07-08 | 2015-09-16 | 北京依米康科技发展有限公司 | Method for conductive connection of cables |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5079223A (en) | Method of bonding metals to ceramics | |
| JP3126977B2 (en) | Reinforced direct bond copper structure | |
| US5134040A (en) | Melt formed superconducting joint between superconducting tapes | |
| US7319195B2 (en) | Composite conductor, superconductive apparatus system, and composite conductor manufacturing method | |
| US4651191A (en) | Semiconductor device and fabrication method thereof | |
| US3985281A (en) | Method of producing an electrical conductor | |
| US5321003A (en) | Connection between high temperature superconductors and superconductor precursors | |
| US5010053A (en) | Method of bonding metals to ceramics | |
| EP0469894B1 (en) | Method of forming a joint between superconducting tapes | |
| JP2001319750A (en) | Connecting method of oxide superconductor | |
| JPH01241781A (en) | Connection configuration of oxide-superconductor and connection method thereof | |
| US20210408700A1 (en) | Method for making electrical contact with a superconductive strip conductor | |
| JPH06224591A (en) | Superconducting magnetic shielding material | |
| JPH0997637A (en) | Joint part of oxide superconductor and metal terminal, and its forming method | |
| US5843584A (en) | Superconductive article and method of making | |
| JPH0543341A (en) | Method for joining oxide superconducting bulk to metal | |
| JPH065342A (en) | Superconducting wire connecting method | |
| JP4171253B2 (en) | Low resistance composite conductor and method of manufacturing the same | |
| JPH0645141A (en) | Electrode of oxide superconductor current lead | |
| JP2770247B2 (en) | Method for producing superconducting composite with electrode | |
| JPH05279140A (en) | Method for joining oxide superconductor | |
| JPH03274805A (en) | Superconducting high frequency cavity | |
| JPH0760836B2 (en) | Brazing material | |
| JPH0782927B2 (en) | Insulation anchor for low temperature equipment | |
| JPS63294615A (en) | Compound superconduction stabilizing thin plate and its manufacture |