JPH01128410A - Manufacture of ceramics system superconductor coil - Google Patents
Manufacture of ceramics system superconductor coilInfo
- Publication number
- JPH01128410A JPH01128410A JP28665087A JP28665087A JPH01128410A JP H01128410 A JPH01128410 A JP H01128410A JP 28665087 A JP28665087 A JP 28665087A JP 28665087 A JP28665087 A JP 28665087A JP H01128410 A JPH01128410 A JP H01128410A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- paste
- ceramic
- heat
- material powder
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000002887 superconductor Substances 0.000 title claims description 11
- 239000000463 material Substances 0.000 claims abstract description 39
- 239000000843 powder Substances 0.000 claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 22
- 239000010949 copper Substances 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 229910052788 barium Inorganic materials 0.000 claims description 10
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052746 lanthanum Inorganic materials 0.000 claims description 8
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 8
- 229910052727 yttrium Inorganic materials 0.000 claims description 6
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 229910052706 scandium Inorganic materials 0.000 claims description 2
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 5
- 239000000203 mixture Substances 0.000 abstract description 10
- 238000005245 sintering Methods 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000011859 microparticle Substances 0.000 abstract 1
- 239000003973 paint Substances 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- -1 holsium Chemical compound 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 239000005751 Copper oxide Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910000431 copper oxide Inorganic materials 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process 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
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
- 150000003746 yttrium Chemical class 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、超電導体コイルの製造方法に関し、詳細には
希土類元素の酸化物を含有するセラミックス系超電導体
のコイルの新規な製造方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing a superconductor coil, and more particularly to a novel method for manufacturing a coil of a ceramic superconductor containing an oxide of a rare earth element. It is.
超電導現象は成る温度以下で電気抵抗が全く無くなる現
象をいうが、この超電導現象はそれが起こる温度（臨界
温度）が材料によってそれぞれ異なる。臨界温度が裔い
材料はど冷却が容易であるため、できるだけ臨界温度の
高い材料の開発が特に最近隆盛を極めている。また、高
い臨界温度だけでなく超電導状態で流せる上限の電流（
臨界電流）もセラミックス材料の実用化の重要なポイン
トとなる。これは実用化にはたとえば線材にしなければ
ならないが、セラミックス材料は単位断面積当りに流せ
る電流が小さいため、どれだけ高い臨界電流が得られる
かが実用化への大きな鍵を握っているからである。Superconducting is a phenomenon in which electrical resistance completely disappears below a certain temperature, but the temperature at which this superconducting phenomenon occurs (critical temperature) differs depending on the material. Since materials with a critical temperature can be easily cooled, the development of materials with as high a critical temperature as possible has been particularly popular recently. In addition to the high critical temperature, the upper limit of the current that can flow in a superconducting state (
critical current) is also an important point in the practical application of ceramic materials. This is because, for practical use, it must be made into a wire, for example, but since the current that can be passed per unit cross-sectional area of ceramic materials is small, the key to practical application is how high a critical current can be obtained. be.
ところで超電導現象を起こす材料としては、合金系、セ
ラミックス系が周知であり、最近はセラミックス系材料
の開発が特に進められており、臨界温度の高いセラミッ
クス系超電導材料の開発は日進月歩である。しかしなが
ら、その実用化に際してはＰａ電導材料を長尺の線材、
テープなどに加工する必要があるにもかかわらず、セラ
ミックス系超電導材料は硬（て脆いために金属材のよう
に線引きできない問題がある。セラミックス系超電導線
材をモータのコイルとして使用する場合には更に線材を
コイル巻きする必要があるが、このコイル巻き時に線材
が破断したり、あるいは破断しないまでも巻き応力を加
えることにより線材の超電導特性が低下する等の問題が
ある。By the way, alloy-based and ceramic-based materials are well known as materials that cause superconducting phenomena, and the development of ceramic-based materials has been particularly advanced recently, and the development of ceramic-based superconducting materials with high critical temperatures is progressing rapidly. However, when putting it into practical use, it is necessary to use Pa conductive material as a long wire rod.
Although it is necessary to process it into tapes, etc., ceramic superconducting materials have the problem of being hard and brittle and cannot be drawn like metal materials.When ceramic superconducting wires are used as motor coils, It is necessary to wind the wire into a coil, but there are problems such as the wire breaking during coil winding, or even if it does not break, the superconducting properties of the wire deteriorate due to the application of winding stress.
従って本発明の目的は、以上の点を鑑みて、セラミック
ス系超電導材料の粉末またはその原料粉末の混合物から
直接当該材料のコイルを製造する新規な方法を提供する
ことにある。Therefore, in view of the above points, an object of the present invention is to provide a new method for directly manufacturing a coil of ceramic superconducting material from a powder of the material or a mixture of its raw material powder.
前記目的は、耐熱性支持体の表面にセラミックス系超電
導材料の粉末またはその原＊４粉末のペーストを塗布し
て所望の形状のコイルを描画し、次いで焼結することを
特徴とするセラミックス系超電導体コイルの製造方法に
より達成される。The purpose is to apply a paste of powder of ceramic superconducting material or its original*4 powder to the surface of a heat-resistant support to draw a coil in a desired shape, and then sintering the ceramic superconducting material. This is achieved by a method for manufacturing body coils.
本発明の特徴は、セラミックス系超電導材料の粉末また
はその原料粉末のペーストを用いて耐熱性支持体の表面
に所望の形状のコイルを描画し、ついで焼結して上記表
面に超電導体コイルを形成するものである。、従って従
来問題の多かった線材のコイル巻き加工が不要であり、
コイル巻き加工に付随した種々の問題が全て解消するこ
とである。A feature of the present invention is that a coil of a desired shape is drawn on the surface of a heat-resistant support using ceramic superconducting material powder or a paste of its raw material powder, and then sintered to form a superconducting coil on the surface. It is something to do. ,Therefore, there is no need for coil winding of the wire, which was a problem in the past.
The purpose is to eliminate all the various problems associated with coil winding.
本発明においては、超電導体層の形成材料となるセラミ
ックス系超電導材料は特に制限がなく、その酸化物中に
特に重希土類元素（ランタン、イッテルビウム、ジスプ
ロシウム、ホルシウム、エルビウム、ツリウム、インド
リウム、ストロンチウムなど）を含有するセラミックス
系であることが好ましい。酸化物を含有するセラミック
ス系であることが好ましい。かかる材料としては、たと
えば材料の成分としてバリウム・イツトリウム・銅・酸
素、バリウム・ランタン・銅・酸素、ストロンチウム・
ランタン・銅・酸素、バリウム・スカンジウム・銅・酸
素、またはカルシウム・ランタン・銅・酸素を組成とす
るセラミックスなどがあり、好ましくはセラミックス材
料で主流になりつつあるインドリウム系であるバリウム
・イットリウム・銅・酸素の組成からなる材料である。In the present invention, there are no particular restrictions on the ceramic superconducting material used to form the superconductor layer, and its oxides include heavy rare earth elements (lanthanum, ytterbium, dysprosium, holsium, erbium, thulium, indium, strontium, etc.). ) is preferably a ceramic type containing. Preferably, it is a ceramic type material containing an oxide. Examples of such materials include barium, yttrium, copper, oxygen, barium, lanthanum, copper, oxygen, strontium,
Ceramics include lanthanum/copper/oxygen, barium/scandium/copper/oxygen, or calcium/lanthanum/copper/oxygen, and preferably barium/yttrium, which is an indium-based ceramic material that is becoming mainstream. It is a material with a composition of copper and oxygen.
さらにこのイツトリウム系超電導材料を使用する場合に
その好ましい配合比はＢａ： Ｙ ：Ｃｕ： Ｏ＝２
：１１：６〜７である。Furthermore, when using this yttrium-based superconducting material, the preferred blending ratio is Ba: Y : Cu: O = 2
:11:6-7.
本発明においては、かかる組成を有するセラミックスの
粉体が用いられる。当該粉末を製造する方法は、従来既
知の方法によればよく、特に制限はない。たとえば原料
粉末（たとえばバリウム・イツトリウム・銅・酸素系の
超電導材料の場合は炭酸バリウム、酸化イツトリウムお
よび酸化銅等）の混合→焼結→焼給体の再粉末化という
工程で行われる固体プロセスなどによって製造すればよ
い。In the present invention, ceramic powder having such a composition is used. The method for producing the powder may be any conventionally known method and is not particularly limited. For example, a solid-state process that involves mixing raw material powder (e.g., barium carbonate, yttrium oxide, copper oxide, etc. in the case of barium, yttrium, copper, and oxygen-based superconducting materials), sintering, and re-powdering the sintered body. It can be manufactured by.
本発明においては、炭酸バリウム、酸化イツトリウムお
よび酸化銅等の原料粉末の混合物をも使用することが出
来る。本発明においては、セラミックス系超電導材料の
粉末またはその原料粉末の混合物等を以下総称的に超電
導材ｌ１５】末と呼ぶ。In the present invention, a mixture of raw material powders such as barium carbonate, yttrium oxide, and copper oxide can also be used. In the present invention, powders of ceramic-based superconducting materials or mixtures of their raw material powders are hereinafter collectively referred to as superconducting materials.
本発明の方法においては、まず超電導材料粉末たとえば
粒径５μｍまたはそれ以下の可及的微粒子を適当な液体
媒体にたとえば５〜６０重量％の濃度で分散してなるペ
ーストを調製する。液体媒体としては、非水系のものが
好ましく、たとえばエタノール、プロパツール、プロピ
レングリコール、ポリビニルアルコールなどのアルコー
ル類、リグロイン、灯油、ポリブテンなどの炭化水素類
が例示できる。In the method of the present invention, first, a paste is prepared by dispersing superconducting material powder, for example, as fine particles as possible with a particle size of 5 μm or less, in a suitable liquid medium at a concentration of, for example, 5 to 60% by weight. The liquid medium is preferably non-aqueous, and examples thereof include alcohols such as ethanol, propatool, propylene glycol, and polyvinyl alcohol, and hydrocarbons such as ligroin, kerosene, and polybutene.
本発明においては、上記ペーストを用いて耐熱性支持体
の表面上に種々の方法により所望の形状のコイルを描画
することができる。たとえば耐熱性支持体の表面に一様
に前記ペーストを塗布し、必要に応じて塗膜を乾燥した
後、ペースト塗布層の不要部分を除去してコイルとなる
部分のみを残存させる方法があり、あるいは上記の表面
に所望の形状のコイルを直接スクリーン印刷などの手段
で印刷してもよい。In the present invention, a coil in a desired shape can be drawn on the surface of a heat-resistant support by various methods using the above paste. For example, there is a method of uniformly applying the paste on the surface of a heat-resistant support, drying the coating film as necessary, and then removing unnecessary parts of the paste coating layer to leave only the part that will become the coil. Alternatively, a coil of a desired shape may be directly printed on the above surface by means such as screen printing.
耐熱性支持体としては、所望の形状のコイルを製造する
のに適した形状のものが用いられる。たとえば、渦巻状
のコイルやシートコイルを製造する場合には薄板が好ま
しく、中心軸方向に一定の長さを有するコイルを製造す
る場合には円筒体が好ましい。耐熱性支持体は、後記す
る焼結温度に耐え得る耐熱性を有するものであればよく
、たとえばセラミックス、グラファイト、耐熱性ガラス
などからなるものが用いられる。As the heat-resistant support, one having a shape suitable for manufacturing a coil of a desired shape is used. For example, a thin plate is preferable when manufacturing a spiral coil or a sheet coil, and a cylindrical body is preferable when manufacturing a coil having a constant length in the central axis direction. The heat-resistant support may be any material as long as it has heat resistance that can withstand the sintering temperature described below, and for example, those made of ceramics, graphite, heat-resistant glass, etc. are used.
耐熱性支持体上に前記ペーストにて描画されたコイルは
ついで焼結される。焼結温度は使用したセラミックスに
より異なるが、上記した超電導材料粉末の場合、７００
〜１０００ ’Ｃ１好ましくは８００〜９５０°Ｃ程度
であり、焼結に要する時間は１〜２４時間程度である。The coil drawn with the paste on the heat-resistant support is then sintered. The sintering temperature varies depending on the ceramic used, but in the case of the above-mentioned superconducting material powder, the sintering temperature is 700
-1000'C1, preferably about 800-950°C, and the time required for sintering is about 1-24 hours.
以下、本発明の方法を実施例に基づいてより具体的に説
明する。Hereinafter, the method of the present invention will be explained in more detail based on Examples.
実施例１
セラミックス系超電導材料として、その組成がバリウム
・イツトリウム・銅・酸素で、配合比をＢａ：Ｙ：Ｃｕ
：Ｏ＝２：１：３：６’、１に調製した平均粒径的５μ
ｍの材料粉末をプロピレングリコールに分散させたペー
スト（材料粉末の含有量：１０重量％）を用いて外径１
０■長さ５０Ｉ！１１のセラミックス製円筒の側周面上
に螺旋形状のコイルをスクリーン印刷し乾燥後、９００
’Ｃで焼結して厚さ２０ＩＩＩｍの超電導体コイルを
得た。Example 1 A ceramic superconducting material whose composition is barium, yttrium, copper, and oxygen, with a mixing ratio of Ba:Y:Cu.
:O=2:1:3:6', average particle diameter 5μ prepared at 1
m material powder dispersed in propylene glycol (material powder content: 10% by weight).
0 ■ Length 50I! A spiral coil was screen printed on the side circumferential surface of the ceramic cylinder No. 11, and after drying, 900
A superconducting coil with a thickness of 20 III m was obtained by sintering with 'C.
実施例２
配合比をＢａ：Ｙ：Ｃｕ：Ｏ＝２：１：３ニア、０に調
製した平均粒径的５μ−の材料粉末を用いて実施例１と
同様の方法および条件でセラミックス製円筒の側周面上
にコイル形成した。Example 2 A ceramic cylinder was prepared in the same manner and under the same conditions as in Example 1 using material powder with an average particle size of 5 μ- prepared at a blending ratio of Ba:Y:Cu:O=2:1:3 or 0. A coil was formed on the side peripheral surface of.
実施例３
セラミックス系超電導材料として、その組成がバリウム
・ランタン・銅・酸素で、配合比をＢａ：Ｙ ：Ｃｕ：
Ｏ＝０．１５：０．８５： １ ： ４に調製した平
均粒径的５μｍの材料粉末を用いて実施例１と同様の方
法および条件でセラミックス製円筒の側周面上にコイル
形成した。Example 3 A ceramic superconducting material whose composition is barium, lanthanum, copper, and oxygen, with a mixing ratio of Ba:Y:Cu:
A coil was formed on the side circumferential surface of a ceramic cylinder using the same method and conditions as in Example 1 using material powder with an average particle size of 5 μm prepared in the ratio O=0.15:0.85:1:4.
実施例４
セラミックス製円筒に代わって、厚さ０． ５ｎｍ＋、
１０ｃｍ角のセラミックス製シートの片面に渦巻形状の
コイルをスクリーン印刷し乾燥後、９００°Ｃで焼結し
て厚さ２０ａｍの超電導体コイルを有するシートコイル
を得た。Example 4 Instead of a ceramic cylinder, a cylinder with a thickness of 0. 5nm+,
A spiral coil was screen printed on one side of a 10 cm square ceramic sheet, dried, and then sintered at 900°C to obtain a sheet coil having a superconductor coil with a thickness of 20 am.
実施例５
実施例１で用いたものと同じペーストを外径１０ｍ＋ａ
、長さ５０ｍｍのセラミックス製円筒の側周面全面に塗
布し、半乾燥状態として半乾燥塗膜の不要部分を機械的
に掻き取り除去して螺旋形状のコイルを残存させ、本乾
燥後、９００°Ｃで焼結して厚さ２０μｍの超電導体コ
イルを得た。Example 5 The same paste used in Example 1 was prepared with an outer diameter of 10 m+a.
, applied to the entire side surface of a ceramic cylinder with a length of 50 mm, left in a semi-dry state, and mechanically scraped off unnecessary parts of the semi-dry coating to leave a spiral-shaped coil. After main drying, 900 A superconductor coil with a thickness of 20 μm was obtained by sintering at °C.
各実施例で得られた各コイルの臨界温度並びに臨界電流
密度を以下の方法によって測定し、第１表に示す結果を
得た。The critical temperature and critical current density of each coil obtained in each example were measured by the following method, and the results shown in Table 1 were obtained.
（臨界温度、臨界電流密度の測定方法）１）臨界温度
サンプル（長さ２〜３ＣＩ１１）を電流密度０．１ Ａ
／ｃｒｌとして液体ヘリウムで冷却しなから４端子法に
より電気抵抗変化と温度変化をＸ−Ｙレコーダーにより
測定し、電気抵抗値がゼロになる温度を求めた。(Method for measuring critical temperature and critical current density) 1) Critical temperature sample (length 2 to 3 CI11) at a current density of 0.1 A
/crl, and after cooling with liquid helium, changes in electrical resistance and temperature were measured using an X-Y recorder using a four-terminal method, and the temperature at which the electrical resistance value became zero was determined.
２）臨界電流密度
サンプル（長さ２〜３ｃ＋ａ）をパワーリードと共に液
体ヘリウム中に浸漬し、徐々に電流値を上げなから４端
子法によりＩＲドロップと電流変化をＸ−Ｙレコーダー
により測定し、ＩＲドロップが出現する電流値を求めた
。2) Immerse the critical current density sample (length 2-3c+a) in liquid helium together with the power lead, gradually increase the current value, and measure the IR drop and current change with an X-Y recorder using the four-terminal method. The current value at which an IR drop appears was determined.
第１表
〔発明の効果］
以上説明した如く、本発明の製造方法によればセラミッ
クス系超電導材料の粉末またはその原料粉末の混合物直
接当該材料のコイルを製造することができる。したがっ
て従来問題の多かった線材のコイル巻き加工が不要であ
り、コイル巻き加工に付随した種々の問題が全て解消す
る。Table 1 [Effects of the Invention] As explained above, according to the manufacturing method of the present invention, a coil of the ceramic superconducting material powder or a mixture of its raw material powder can be directly manufactured. Therefore, there is no need for coil winding of the wire, which has been problematic in the past, and all the various problems associated with coil winding are solved.
ユーシYushi
Claims (6)
の粉末またはその原料粉末のペーストを塗布して所望の
形状のコイルを描画し、次いで焼結することを特徴とす
るセラミックス系超電導体コイルの製造方法。(1) A ceramic superconducting coil characterized in that a powder of a ceramic superconducting material or a paste of its raw material powder is applied to the surface of a heat-resistant support to draw a coil in a desired shape, and then sintered. Production method.
し、ついでペースト塗布層の不要部分を除去して所望の
形状のコイルを描画する特許請求の範囲第（１）項に記
載のセラミックス系超電導体コイルの製造方法。(2) The method according to claim 1, wherein the paste is uniformly applied to the surface of a heat-resistant support, and then unnecessary portions of the paste coating layer are removed to draw a coil in a desired shape. A method for manufacturing a ceramic superconductor coil.
ルを印刷により描画する特許請求の範囲第（１）項に記
載のセラミックス系超電導体コイルの製造方法。(3) The method for manufacturing a ceramic superconductor coil according to claim (1), wherein the coil is drawn on the surface of a heat-resistant support by printing using the paste.
にコイルを描画する特許請求の範囲第（１）項乃至第（
３）項のいずれかに記載のセラミックス系超電導体コイ
ルの製造方法。(4) The heat-resistant support is a cylinder, and a coil is drawn on the side peripheral wall of the cylinder.
3) A method for manufacturing a ceramic superconductor coil according to any one of items 3).
くとも片面上にコイルを描画することを特徴とする特許
請求の範囲第（１）項乃至第（３）項のいずれかに記載
のセラミックス系超電導体コイルの製造方法。(5) The heat-resistant support is a flat plate, and a coil is drawn on at least one side of the flat plate, according to any one of claims (1) to (3). A method for manufacturing a ceramic superconductor coil.
・銅・酸素、バリウム・ランタン・銅・酸素、ストロン
チウム・ランタン・銅・酸素、バリウム・スカンジウム
・銅・酸素、またはカルシウム・ランタン・銅・酸素で
あることを特徴とする特許請求の範囲第（１）項乃至第
（５）項のいずれかに記載のセラミックス系超電導体コ
イルの製造方法。(6) The components of the superconducting material are barium/yttrium/copper/oxygen, barium/lanthanum/copper/oxygen, strontium/lanthanum/copper/oxygen, barium/scandium/copper/oxygen, or calcium/lanthanum/copper/oxygen. A method for manufacturing a ceramic superconductor coil according to any one of claims (1) to (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28665087A JPH01128410A (en) | 1987-11-12 | 1987-11-12 | Manufacture of ceramics system superconductor coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28665087A JPH01128410A (en) | 1987-11-12 | 1987-11-12 | Manufacture of ceramics system superconductor coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01128410A true JPH01128410A (en) | 1989-05-22 |
Family
ID=17707172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28665087A Pending JPH01128410A (en) | 1987-11-12 | 1987-11-12 | Manufacture of ceramics system superconductor coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01128410A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0711813A2 (en) | 1994-09-29 | 1996-05-15 | Hitachi Chemical Co., Ltd. | Coating varnish composition and antifouling coating composition |
-
1987
- 1987-11-12 JP JP28665087A patent/JPH01128410A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0711813A2 (en) | 1994-09-29 | 1996-05-15 | Hitachi Chemical Co., Ltd. | Coating varnish composition and antifouling coating composition |
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