JPH01153536A - Superconducting material and production thereof - Google Patents
Superconducting material and production thereofInfo
- Publication number
- JPH01153536A JPH01153536A JP62310111A JP31011187A JPH01153536A JP H01153536 A JPH01153536 A JP H01153536A JP 62310111 A JP62310111 A JP 62310111A JP 31011187 A JP31011187 A JP 31011187A JP H01153536 A JPH01153536 A JP H01153536A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- superconducting material
- group
- metals
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 47
- 239000002184 metal Substances 0.000 claims abstract description 47
- 150000002739 metals Chemical class 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 11
- 229910052703 rhodium Inorganic materials 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 229910052788 barium Inorganic materials 0.000 claims abstract description 8
- 229910052691 Erbium Inorganic materials 0.000 claims abstract description 7
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 7
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 7
- 229910052772 Samarium Inorganic materials 0.000 claims abstract description 7
- 229910052771 Terbium Inorganic materials 0.000 claims abstract description 7
- 229910052769 Ytterbium Inorganic materials 0.000 claims abstract description 7
- 229910052692 Dysprosium Inorganic materials 0.000 claims abstract description 6
- 229910052689 Holmium Inorganic materials 0.000 claims abstract description 6
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 6
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 6
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims abstract 2
- 239000000956 alloy Substances 0.000 claims description 15
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 7
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 abstract description 4
- 229910052727 yttrium Inorganic materials 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 16
- 239000001301 oxygen Substances 0.000 description 16
- 229910052760 oxygen Inorganic materials 0.000 description 16
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 15
- 239000010948 rhodium Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 6
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 5
- 239000005751 Copper oxide Substances 0.000 description 5
- 229910000431 copper oxide Inorganic materials 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- HBEQXAKJSGXAIQ-UHFFFAOYSA-N oxopalladium Chemical compound [Pd]=O HBEQXAKJSGXAIQ-UHFFFAOYSA-N 0.000 description 2
- 229910003445 palladium oxide Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical group [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 238000004453 electron probe microanalysis Methods 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 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
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002941 palladium compounds Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 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
- Inorganic Compounds Of Heavy Metals (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、安定性に富み、優れた大量生産性を有する超
電導材料及びその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a superconducting material that is highly stable and has excellent mass productivity, and a method for manufacturing the same.
（従来技術とその問題点）
水銀に超電導現象が観察されて以来、超電導の有用性は
十分認識されていたが、超電真材料に関する価値ある発
見がされず、近年まで超電導現象にはさほどの関心は払
われなかった。(Prior art and its problems) Ever since the superconducting phenomenon was observed in mercury, the usefulness of superconductivity has been fully recognized, but no valuable discoveries regarding superconducting materials have been made, and until recently, superconducting phenomena have remained largely unknown. No interest was paid.
しかしながら１９８６年に数種の金属酸化物つまりセラ
ミックスにおいて超電導現象が観察されて以来急速に超
電導現象に関する関心が高まり、かつ該現象に関する研
究開発が飛躍的に進展している。更に該セラミックスの
構成元素を検討することにより該セラミックスの超電導
温度が従来の液体ヘリウム温度から液体窒素温度まで上
昇し、更に最近では室温における超電導材料も発表され
ている。However, since superconductivity was observed in several types of metal oxides, ie, ceramics, in 1986, interest in superconductivity has rapidly increased, and research and development regarding this phenomenon has progressed dramatically. Furthermore, by studying the constituent elements of the ceramics, the superconducting temperature of the ceramics has been raised from the conventional liquid helium temperature to the liquid nitrogen temperature, and more recently, superconducting materials at room temperature have also been announced.
従来のＡ−Ｂ−Ｃｕ−０型超電導材料（ここでＡはＹＸ
ＬａＸＰｒ、Ｎｄ、Ｓｍ、Ｇｄ、Ｔｂ。Conventional A-B-Cu-0 type superconducting material (where A is YX
LaXPr, Nd, Sm, Gd, Tb.
Ｄｙ、Ｈｏ、Ｅｒ及びＹｂから成る群から選択される１
又は２種以上の金属であり、ＢはＢａ、Ｓｒ及びＣａか
ら成る群から選択される１又は２種以上の金属である）
は、水（大気中の蒸気）と化学反応を起こし不安定であ
る、該材料中の酸素量の制御（温度や酸素圧による）が
困難で大量生産に不適である、銅酸化物はアルミナやシ
リカなどのセラミックスと化合し易く該超電導材料と接
触する物質に制限がある、及び熱膨張による応力を緩和
することができず膨脂率のマツチングする物質の選定が
困難である、等の欠点を有している。1 selected from the group consisting of Dy, Ho, Er and Yb
or two or more metals, and B is one or two or more metals selected from the group consisting of Ba, Sr, and Ca)
Copper oxide is unstable due to a chemical reaction with water (steam in the atmosphere), and it is difficult to control the amount of oxygen in the material (through temperature and oxygen pressure), making it unsuitable for mass production. There are disadvantages such as there are restrictions on the substances that can easily combine with ceramics such as silica and come into contact with the superconducting material, and it is difficult to select a substance that matches the swelling ratio because it cannot alleviate the stress caused by thermal expansion. have.
これらの欠点は主として従来の超電導材料中の酸素が動
き易く該酸素がどの元素にも安定して結合していないこ
とに起因している。These drawbacks are mainly due to the fact that oxygen in conventional superconducting materials is mobile and is not stably bonded to any element.
（発明の目的）
本発明は、電気材料の飛躍的革新を可能とする超電導材
料の実用化に向ける上記欠点を解消し、特に安定で大量
生産性のある超電導材料を提供することを目的とする。(Objective of the Invention) The purpose of the present invention is to eliminate the above-mentioned drawbacks and to provide a superconducting material that is particularly stable and can be mass-produced. .
（問題点を解決するための手段）
本発明は、第１に一般式ＡＢ２ Ｃ３Ｏｘ （ここで
ＡはＹ、Ｌａ、Ｐｒ、Ｎｄ、Ｓｍ、Ｇｄ、Ｔｂ。(Means for Solving the Problems) The present invention is based on the general formula AB2 C3Ox (where A is Y, La, Pr, Nd, Sm, Gd, Tb).
Ｄｙ％ ＨＯ％ Ｅｒ及びＹｂから成る群から選択され
る１又は２種以上の金属であり、ＢはＢａ、Ｓｒ及びＣ
ａから成る群から選択される１又は２種以上の金属であ
り、ＣはＣｕ ％ Ｐ ｄ及びＲｈから成る群から選択
される１又は２種以上の金属でありＣｕ単独であるもの
を含まない）で表される組成を有する超電導材料であり
、第２に該超電導材料を製造する際に、各金属Ａ、Ｂ及
びＣの酸化物を粉砕し、該粉末を強く混合して高度に分
散させ加熱及び加圧して所定形状に成形することから成
る超電導材料の製造方法であり、第３に同じく上記超電
導材料を製造する際に、各金属Ａ、Ｂ及びＣから成る合
金を製造し、該合金を酸化することにより所定形状に成
形することから成る超電導材料の製造方法である。Dy% HO% One or more metals selected from the group consisting of Er and Yb, B is Ba, Sr and C
one or more metals selected from the group consisting of a, and C is one or more metals selected from the group consisting of Cu % P d and Rh, and does not include Cu alone ), and secondly, when manufacturing the superconducting material, oxides of each metal A, B, and C are ground, and the powders are strongly mixed to be highly dispersed. This is a method for manufacturing a superconducting material which consists of heating and pressurizing and forming it into a predetermined shape. Thirdly, when manufacturing the above-mentioned superconducting material, an alloy consisting of each metal A, B, and C is manufactured, and the alloy is This is a method of manufacturing a superconducting material, which comprises forming it into a predetermined shape by oxidizing it.
以下本発明の詳細な説明する。The present invention will be explained in detail below.
本発明の基本的な着想は、超電導材料中に不安定な酸素
を吸収して貯蔵し又外界へ排出することのできるパラジ
ウム及び／又はロジウムを含有させることにより、従来
の超電導材料において問題となっている該材料中の銅酸
化物中の酸素を安定化し、これにより安定で大量生産可
能な超電導材料を提供しようとする点にある。The basic idea of the present invention is to incorporate palladium and/or rhodium into the superconducting material, which can absorb unstable oxygen, store it, and release it to the outside world, thereby eliminating problems in conventional superconducting materials. The purpose of this invention is to stabilize the oxygen in the copper oxide in the material, thereby providing a stable superconducting material that can be mass-produced.
本発明の超電導材料は、一般式ＡＢＺ Ｃ３０８で表さ
れる複合酸化物の高分散組成物から成っている。金属Ａ
及びＢは、従来超電導材料構成元素として知られている
金属であり、Ａはイツトリウム（Ｙ）、ランタン（Ｌａ
）、プラセオジム（Ｐｒ）、ネオジム（Ｎｄ）、サマリ
ウム（Ｓｍ）、ガドリウム（Ｇｄ）、テルビウム（Ｔｂ
）、ジスプロシウム（Ｄｙ）、ホルミウム（Ｈｏ）、エ
ルビウム（Ｅｒ）及びイッテルビウム（Ｙｂ）から成る
希土類金属のうちの１種又は２種以上であり、Ｂはバリ
ウム（Ｂａ）、スカンジウム（Ｓｒ）及びカルシウム（
Ｃａ）のうちの１種又は２種以上である。The superconducting material of the present invention is made of a highly dispersed composite oxide composition represented by the general formula ABZ C308. Metal A
and B are metals conventionally known as constituent elements of superconducting materials, and A is yttrium (Y), lanthanum (La
), praseodymium (Pr), neodymium (Nd), samarium (Sm), gadolinium (Gd), terbium (Tb)
), dysprosium (Dy), holmium (Ho), erbium (Er), and ytterbium (Yb), and B is barium (Ba), scandium (Sr), and calcium. (
One or more types of Ca).
又本発明の特徴的な構成元素である前記金属Ｃは、銅（
Ｃｕ）、パラジウム（Ｐｄ）及びロジウム（Ｒｈ）から
成る群から選択される１又は２種以上の金属であり、上
述の通りパラジウム及び／又はロジウムにより銅酸化物
等の酸素を取り込み安定化させることを目的とするため
、該金属ＣはＣｕ単独であるものを含まない。Further, the metal C, which is a characteristic constituent element of the present invention, is copper (
One or more metals selected from the group consisting of Cu), palladium (Pd), and rhodium (Rh), and as mentioned above, palladium and/or rhodium captures oxygen such as copper oxide and stabilizes it. For this reason, the metal C does not include Cu alone.
これらの各金属は正確にＡ：Ｂ：Ｃ＝１：２：３の組成
比とすることにより超電導性が現れる。Each of these metals exhibits superconductivity when the composition ratio is accurately set to A:B:C=1:2:3.
該超電導材料を製造するためには、従来法つまり金属Ａ
の酸化物、金属Ｂの酸化物及び金属Ｃの酸化物をそれぞ
れ粉砕してこれらの粉末を十分混合して該混合物を適宜
成形し、かつ必要に応じて高温における焼結を行って所
定強度を有する超電導材料を製造する方法をそのまま適
用すればよいが、この他に金属Ａ、Ｂ及びＣの合金を製
造し、該合金を加熱して前記金属Ａの酸化物、前記金属
Ｂの酸化物及び前記金属Ｃの酸化物の混合物とするよう
にしてもよい。In order to produce the superconducting material, conventional methods, namely metal A
The oxide of metal B, the oxide of metal B, and the oxide of metal C are respectively ground, these powders are thoroughly mixed, and the mixture is appropriately shaped, and if necessary, sintered at high temperature to obtain a predetermined strength. Alternatively, an alloy of metals A, B, and C may be manufactured, and the alloy may be heated to form an oxide of metal A, an oxide of metal B, and an oxide of metal B. A mixture of oxides of the metal C may be used.
超電導材料は構成成分が十分に混合されていないと超電
導現象を示さず、粉砕した各酸化物を混合する従来法に
よると各酸化物を十分に分散させることは非常に困難で
あるか、非常に多くの処理時間を要している。しかし前
記合金法によると該合金製造時に既に各金属が十分に混
合分散されているため、該合金を酸化するだけで十分に
分散されたセラミックスである超電導材料を製造するこ
とができる。Superconducting materials do not exhibit superconductivity unless their constituent components are thoroughly mixed, and using the conventional method of mixing pulverized oxides, it is extremely difficult or extremely difficult to sufficiently disperse each oxide. It takes a lot of processing time. However, according to the alloy method, since each metal is already sufficiently mixed and dispersed during the production of the alloy, it is possible to produce a superconducting material, which is a sufficiently dispersed ceramic, simply by oxidizing the alloy.
本発明では銅酸化物、銅を使用しない場合には前記金属
ＡやＢの酸化物中の酸素が、前記超電導材料中のパラジ
ウム及び／又はロジウム又はその酸化物中に取り込まれ
不安定な酸素を消滅させることにより、材料中の酸素量
の制御を容易にして大量生産を可能にし、かつ該材料と
接触する物質の種類やマツチング性に関する制限を完全
になくすか、大きく緩和することができる。In the present invention, when copper oxide or copper is not used, oxygen in the oxides of metals A and B is incorporated into palladium and/or rhodium or their oxides in the superconducting material, and unstable oxygen is generated. By eliminating oxygen, it becomes easier to control the amount of oxygen in the material, enabling mass production, and it is possible to completely eliminate or greatly relax restrictions on the types of substances that come into contact with the material and on matching properties.
前記酸素の取り込みは、パラジウムの場合にはその卓越
したガス貯蔵能力により不安定な酸素を吸収して自身が
若干膨脂することにより行われる。In the case of palladium, the oxygen is taken in by absorbing unstable oxygen due to its excellent gas storage ability and causing the palladium itself to expand slightly.
この他に原子価を変化させることにより例えば酸化パラ
ジウム（ｎ）ＰｄＯ□を酸化パラジウム（ｒＶ）ＰｄＯ
４に変換することにより前記酸素をこれらのパラジウム
化合物中に取り込むことも寄与すると考えられる。又ロ
ジウムの場合は後者の原子価変換が大きく寄与するもの
と考えられ、これにより前記した本発明の特徴を具現す
ることができる。In addition, by changing the valence, for example, palladium oxide (n)PdO□ can be changed to palladium oxide (rV)PdO.
Incorporation of the oxygen into these palladium compounds by conversion to 4 is also believed to contribute. In the case of rhodium, the latter valence conversion is thought to make a large contribution, and thereby the above-described features of the present invention can be realized.
（実施例）
以下に本発明の実施例を記載するが、該実施例は本発明
を限定するものではない。(Example) Examples of the present invention will be described below, but the examples do not limit the present invention.
爽胤皿上
乳鉢中で乳棒を使用して微細に粉砕した金属Ａの酸化物
、金属Ｂの酸化物及び金属Ｃの酸化物を表１に示す割合
で、播潰機を使用して十分に混合粉砕した後、９５０℃
で１０時間、９気圧の酸素雰囲気中で加熱した後、徐冷
し直径５ｍｍ、長さ２ｃｍの棒状の超電導材料を製造し
た。なお、前記金属Ａ、金属Ｂ及び金属Ｃは全て原子比
で１：２：３となるようにした。The oxide of metal A, the oxide of metal B, and the oxide of metal C were finely ground using a pestle in a mortar on a soybean dish in the proportions shown in Table 1, and were thoroughly ground using a crusher. After mixing and pulverizing, 950℃
After heating in an oxygen atmosphere of 9 atm for 10 hours, the material was slowly cooled to produce a rod-shaped superconducting material with a diameter of 5 mm and a length of 2 cm. Note that the metal A, metal B, and metal C were all arranged in an atomic ratio of 1:2:3.
次いで得られた材料の抵抗値を四端子法にて測定したと
ころ、窒素沸点（７７Ｋ）において全て零であった。The resistance values of the obtained material were then measured using a four-terminal method, and all were found to be zero at the nitrogen boiling point (77K).
（以下余白）
直ｍ
表 １
金属Ａ、金属Ｂ及び金属Ｃを真空もしくは不活性雰囲気
中で加熱溶融して合金化し、表２に示す融点を有する合
金を得た。前記金属Ａ、金属Ｂ及び金属Ｃの酸化物は全
て原子比で１：２：３となるようにした。(The following is a blank space) Table 1 Metal A, metal B, and metal C were alloyed by heating and melting in a vacuum or an inert atmosphere to obtain alloys having melting points shown in Table 2. The oxides of metal A, metal B, and metal C were all arranged in an atomic ratio of 1:2:3.
その後これらの合金をそれぞれ９００℃、９気圧の酸素
雰囲気中で８時間〜９６時間酸化処理を行い、その断面
を電子プローブマイクロアナリシスで観察したところ、
各金属酸化物は微細な粒子として互いに良好に分散して
いた。These alloys were then oxidized for 8 to 96 hours at 900°C and 9 atmospheres of oxygen, and their cross sections were observed using electron probe microanalysis.
Each metal oxide was well dispersed in the form of fine particles.
この酸化された材料の抵抗値の測定を行ったところ、窒
素沸点（７７Ｋ）で全て零であった。When the resistance values of this oxidized material were measured, they were all zero at the nitrogen boiling point (77K).
（以下余白）
表 ２
（発明の効果）
本発明は、従来の超電導材料を構成する金属酸化物に貴
金属酸化物であるパラジウム及び／又はロジウムの酸化
物を分散させて成る超電導材料である。(The following is a blank space) Table 2 (Effects of the Invention) The present invention is a superconducting material made by dispersing oxides of palladium and/or rhodium, which are noble metal oxides, in metal oxides constituting conventional superconducting materials.
従って該組成物は、添加された複数原子価を取り得る貴
金属が自己の原子価を増加することによりあるいは該金
属酸化物の有するガス貯蔵性により、銅酸化物等が有す
る不安定な酸素を吸収して得られる超電導材料に固有の
不安定性を排除し、安定で大量生産性のある材料を提供
することができる。Therefore, the composition absorbs the unstable oxygen contained in the copper oxide etc. by increasing the valence of the added noble metal which can take on multiple valences or by the gas storage property of the metal oxide. It is possible to eliminate the instability inherent in superconducting materials obtained by oxidation, and to provide materials that are stable and can be mass-produced.
又本発明の超電導材料の製造方法として、前記超電導材
料を構成する各金属の合金を予め作製し、該合金を酸化
してセラミックスとすることにより、非常に高度に分散
された良好な超電導活性を示す材料を得ることができる
。又従来の超電導材料は任意形状に成形し難いという欠
点を有しているが、上記方法を使用すると合金の状態で
所定形状にしておくと、該合金を酸化することにより該
合金と同形状の超電導材料を得ることができるため、加
工性の面での超電導材料の有用性が格段に向上する。Further, as a method for manufacturing the superconducting material of the present invention, an alloy of each metal constituting the superconducting material is prepared in advance, and the alloy is oxidized to form a ceramic, thereby achieving very highly dispersed and good superconducting activity. The materials shown can be obtained. Furthermore, conventional superconducting materials have the disadvantage of being difficult to form into arbitrary shapes, but using the above method, if the alloy is formed into a predetermined shape, the alloy can be oxidized to form the same shape as the alloy. Since a superconducting material can be obtained, the usefulness of the superconducting material in terms of processability is greatly improved.
Claims (3)
ａ、Ｐｒ、Ｎｄ、Ｓｍ、Ｇｄ、Ｔｂ、Ｄｙ、Ｈｏ、Ｅｒ
及びＹｂから成る群から選択されるｌ又は２種以上の金
属であり、ＢはＢａ、Ｓｒ及びＣａから成る群から選択
される１又は２種以上の金属であり、ＣはＣｕ、Ｐｄ及
びＲｈから成る群から選択される１又は２種以上の金属
でありＣｕ単独であるものを含まない）で表される組成
を有する超電導材料。(1) General formula AB_2C_3O_x (where A is Y, L
a, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er
and Yb, B is one or more metals selected from the group consisting of Ba, Sr, and Ca, and C is Cu, Pd, and Rh. A superconducting material having a composition represented by one or more metals selected from the group consisting of (excluding Cu alone).
ａ、Ｐｒ、Ｎｄ、Ｓｍ、Ｇｄ、Ｔｂ、Ｄｙ、Ｈｏ、Ｅｒ
及びＹｂから成る群から選択される１又は２種以上の金
属であり、ＢはＢａ、Ｓｒ及びＣａから成る群から選択
される１又は２種以上の金属であり、ＣはＣｕ、Ｐｄ及
びＲｈから成る群から選択される１又は２種以上の金属
でありＣｕ単独であるものを含まない）で表される組成
を有する超電導材料の製造方法において、各金属Ａ、Ｂ
及びＣの酸化物を粉砕し、該粉末を強く混合して高度に
分散させ加熱及び加圧して所定形状に成形することから
成ることを特徴とする方法。(2) General formula AB_2C_3O_x (where A is Y, L
a, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er
and Yb, B is one or more metals selected from the group consisting of Ba, Sr, and Ca, and C is Cu, Pd, and Rh. In the method for producing a superconducting material having a composition represented by one or more metals selected from the group consisting of (excluding Cu alone), each metal A, B
A method characterized in that it consists of pulverizing an oxide of and C, strongly mixing the powder to highly disperse it, and molding it into a predetermined shape by heating and pressurizing.
ａ、Ｐｒ、Ｎｄ、Ｓｍ、Ｇｄ、Ｔｂ、Ｄｙ、Ｈｏ、Ｅｒ
及びＹｂから成る群から選択される１又は２種以上の金
属であり、ＢはＢａ、Ｓｒ及びＣａから成る群から選択
される１又は２種以上の金属であり、ＣはＣｕ、Ｐｄ及
びＲｈから成る群から選択される１又は２種以上の金属
でありＣｕ単独であるものを含まない）で表される組成
を有する超電導材料の製造方法において、各金属Ａ、Ｂ
及びＣから成る合金を製造し、該合金を酸化することに
より所定形状に成形することから成ることを特徴とする
方法。(3) General formula AB_2C_3O_x (where A is Y, L
a, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er
and Yb, B is one or more metals selected from the group consisting of Ba, Sr, and Ca, and C is Cu, Pd, and Rh. In the method for producing a superconducting material having a composition represented by one or more metals selected from the group consisting of (excluding Cu alone), each metal A, B
and C, and forming the alloy into a predetermined shape by oxidizing it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62310111A JPH01153536A (en) | 1987-12-08 | 1987-12-08 | Superconducting material and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62310111A JPH01153536A (en) | 1987-12-08 | 1987-12-08 | Superconducting material and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01153536A true JPH01153536A (en) | 1989-06-15 |
Family
ID=18001309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62310111A Pending JPH01153536A (en) | 1987-12-08 | 1987-12-08 | Superconducting material and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01153536A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991006128A1 (en) * | 1989-10-16 | 1991-05-02 | American Superconductor Corporation | Process for making electrical connections to high temperature superconductors using a metallic precursor and the product made thereby |
-
1987
- 1987-12-08 JP JP62310111A patent/JPH01153536A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991006128A1 (en) * | 1989-10-16 | 1991-05-02 | American Superconductor Corporation | Process for making electrical connections to high temperature superconductors using a metallic precursor and the product made thereby |
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