JPH01176608A - Manufacture of oxide superconductive linear body - Google Patents
Manufacture of oxide superconductive linear bodyInfo
- Publication number
- JPH01176608A JPH01176608A JP62335979A JP33597987A JPH01176608A JP H01176608 A JPH01176608 A JP H01176608A JP 62335979 A JP62335979 A JP 62335979A JP 33597987 A JP33597987 A JP 33597987A JP H01176608 A JPH01176608 A JP H01176608A
- Authority
- JP
- Japan
- Prior art keywords
- oxide
- molten metal
- molten
- substance
- molten substance
- 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
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
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用性！？）
本発明は酸化物超電導線条体の製造方法に関するもので
あり、超電導体となる酸化物を粉末として使用するので
はなく、溶融体として使用するようにしたものである。Detailed Description of the Invention (Industrial Applicability!?) The present invention relates to a method for producing an oxide superconducting wire, in which the oxide that becomes the superconductor is not used as a powder, but as a melt. It is designed to be used as a.
（従来技術）
液体窒素温度以上で超電導状態を示す酸化物は既に知ら
れている。この酸化物の代表的なものとしてＹ−Ｂａ−
Ｃｕ−０系がある。この酸化物を線材化する方法として
従来は次のような方法があった。(Prior Art) Oxides that exhibit a superconducting state at temperatures above liquid nitrogen temperature are already known. A typical example of this oxide is Y-Ba-
There is a Cu-0 series. Conventionally, the following methods have been used to make wire rods from this oxide.
（１）原料の混合酸化物粉末をＡｇ、Ａｇ合金。(1) The raw material mixed oxide powder is Ag or Ag alloy.
Ｃｕ合金等の金属パイプ内に充填した後、これを冷間加
工（例えば冷間伸餘、スェージング、溝ロール、平ロー
ル等で線あるいは薄板に加工）して所望寸法の線状体と
し、続いて熱処理を施す方法（２）原料の混合酸化物粉
末とバインダーとを混練した後、押出加工等により線材
化する方法。After filling a metal pipe with Cu alloy or the like, it is cold worked (for example, processed into a wire or thin plate using cold rolling, swaging, grooved rolls, flat rolls, etc.) to form a linear body of desired dimensions, and then (2) A method of kneading the raw mixed oxide powder and a binder and then forming the mixture into a wire rod by extrusion processing or the like.
（３）芯材の外周上に原料の混合酸化物粉末とバインダ
ーとの混錬物をコーティングし１次いで脱バインダーを
含む熱処理を行なう方法。(3) A method in which the outer periphery of the core material is coated with a mixture of raw mixed oxide powder and a binder, and then heat treatment including removal of the binder is performed.
（発明が解決しようとする問題点）
しかし上記の従来方法では次のような問題かあ□ っ
た。(Problems to be solved by the invention) However, the above conventional method has the following problems.
（１）焼成後の焼結体の密度が真密度に近い値にならな
いので臨界電流密度が小さくなる。(1) Since the density of the sintered body after firing does not reach a value close to the true density, the critical current density becomes small.
（２）製造方法が熱平衡過程によるため焼結や加熱過程
で結晶粒界に異相が析出し易く、臨界′１を流密度を低
下させるなど特性劣化の原因になる。(2) Since the manufacturing method relies on a thermal equilibrium process, foreign phases are likely to precipitate at grain boundaries during the sintering and heating processes, causing property deterioration such as decreasing critical '1 flow density.
（発明の目的）
本発明の目的は高緻密度で、臨界温度（Ｔｃ）や臨界電
流密度（、＋ｃ）の高い酸化物Ｍｉ電導線条体を容易に
製造できる方法を実現することにある。(Objective of the Invention) An object of the present invention is to realize a method for easily manufacturing an oxide Mi electrically conductive wire having high density, critical temperature (Tc), and critical current density (, +c).
（問題点を解決するための手段）
本発明の酸化物ａ′ＩＩｔ導線条体の製造方法は、超電
導体となる酸化物の溶融体ｌを連続的に溶融させた金属
２中を通して、同溶融金属２中で酸化物溶融体ｌを急冷
凝固させた後、凝固した酸化物溶融体３の外周に付着し
ている溶融金ｇ、２ａを凝固させて同金属２ａで被覆さ
れた線条体４を製造するようにしたものである。(Means for Solving the Problems) The method for producing an oxide a'IIt conductive wire body of the present invention is to continuously pass a melt l of an oxide to become a superconductor through a molten metal 2. After rapidly solidifying the oxide melt l in the metal 2, the molten gold g and 2a adhering to the outer periphery of the solidified oxide melt 3 are solidified to form a filament 4 coated with the metal 2a. It is designed to manufacture.
（作用）
本発明の製造方法は酸化物粉末の成形加工ではなく、酸
化物の溶融−凝固という方法であるため、酸化物を粉末
として使用する場合に比して高密度となり、臨界電流密
度の向上した線条材が製造 、できる。(Function) The manufacturing method of the present invention is not a molding process of oxide powder but a method of melting and solidifying the oxide, so the density is higher than that when the oxide is used as a powder, and the critical current density is low. Improved wire material can be manufactured.
（実施例１）
第１ｒｇＪは本発明の一実施一である。これは原料とし
てＹ：Ｂａ：Ｃｕ＝ｌ：２：３或はｌ：３：４の配合と
しである原料粉体（酸化物超電導体となる）１１を、高
周波炉１２中で溶融して１０５０℃の酸化物溶融体１と
し、これをノズルなどを通して連続的に溶融させた金属
２中へ投入して同溶融金属２内７酸化物溶融体１を急冷
凝固させ、この東回された酸化物溶融体３を駆動ロール
１５で引き下し、冷却ｆｉ１６で室温まで冷却すること
によ−り酸化物溶融体３の外周に付着している溶融金属
２ａｆｃＩＥ固させて線条体４を製造した。(Example 1) The first rgJ is one embodiment of the present invention. This is made by melting raw material powder (to become an oxide superconductor) 11 in a high frequency furnace 12 with a ratio of Y:Ba:Cu=1:2:3 or 1:3:4 to 1050% ℃ as the molten oxide 1, this is continuously poured into the molten metal 2 through a nozzle etc., the 7 oxide melt 1 in the molten metal 2 is rapidly solidified, and the molten oxide is The molten metal 2afcIE adhering to the outer periphery of the oxide melt 3 was drawn down by the drive roll 15 and cooled to room temperature by the cooling fi 16, thereby solidifying the molten metal 2afcIE, thereby producing the filament 4.
なお、溶融金属２としては銀１３を予め溶融炉１４で溶
融したものを使用した。溶融金属２の融点は酸化物原料
体１１の融点（９００〜１３５０℃）より低クシ、同溶
融金属２の保持Ｑ度は８００℃から１２００℃の範囲と
した。As the molten metal 2, silver 13 which had been melted in advance in a melting furnace 14 was used. The melting point of the molten metal 2 was lower than the melting point (900 to 1350°C) of the oxide raw material 11, and the retention Q degree of the molten metal 2 was in the range of 800°C to 1200°C.
駆動ロール１５には外周に深さ０．５ ｍｍのＶ溝を有
し、アルミナでコーティングされなものを使用した。The drive roll 15 had a V-groove with a depth of 0.5 mm on the outer periphery and was coated with alumina.
上記の製造方法で製造された線条体４をその後８５０℃
で６時間、酸素雰囲気中で再加熱し、２℃／ｌｌｌ１の
速度で３００℃まで冷却してから室温に取出して試供材
とした。The striatum 4 manufactured by the above manufacturing method was then heated to 850°C.
The material was reheated in an oxygen atmosphere for 6 hours, cooled to 300° C. at a rate of 2° C./lll1, and then taken out to room temperature to prepare a sample material.
比較資料として同一！ｌＪ＆の酸化物溶融体１を６０Ｇ
℃に予熱して、１ＩＩＩｌの深さの溝を有する鉄板の上
に落下させ、その後は本発明の場合と同様の再加熱と冷
却を行なって供試材とした。而して製造した各々の試供
線材について緻密度、臨界温度（Ｔｃ）、臨界Ｔｒ！、
流布度（、＋ｃ）を測定した。得られた結果は次の通り
であった。Same as comparison material! Oxide melt 1 of lJ & 60G
The material was preheated to .degree. C. and dropped onto an iron plate having grooves with a depth of 1III1, and then reheated and cooled in the same manner as in the present invention to obtain a test material. The density, critical temperature (Tc), and critical Tr! of each sample wire thus manufactured were determined. ,
The degree of spread (, +c) was measured. The results obtained were as follows.
（工ん下乍泗）
（実施例２）
溶融金属としてＡｇ−２％Ｃｕ合金を用い、他を実施例
１と同様にした場合の得られた試供材のｍ′ＩＥ度、臨
界温度（τ、）、臨界電流密度（ＪＣ）は次のようにな
った。(Construction) (Example 2) m'IE degree and critical temperature (τ ), the critical current density (JC) was as follows.
本ＯＴ：テスラ （発明の効果） 本発明の製造方法によれば次のような各種効果がある。Book OT: Tesla (Effect of the invention) According to the manufacturing method of the present invention, the following various effects can be obtained.
（１）超電導体となる酸化物を溶融体として使用するの
で高密度の超電導成形体が得られる。(1) Since the oxide that becomes the superconductor is used as a melt, a high-density superconducting molded body can be obtained.
（２）得られる超電導成形体中に割れやボイドが少ない
。(2) There are few cracks and voids in the superconducting molded body obtained.
（３）得られる超電導成形体は臨界温度Ｔｃや臨界電流
密度Ｊｃが高い。(3) The obtained superconducting compact has a high critical temperature Tc and a high critical current density Jc.
（４）得られる超電導成形体は高磁界における臨界電流
密度Ｊ、が高い、これは高密度と凝固時の結晶配向によ
るものと思われる。(4) The obtained superconducting compact has a high critical current density J in a high magnetic field, which is thought to be due to the high density and crystal orientation during solidification.
第１図は本発明の製造方法の一例を示す説明図である。 ｌは溶融体 ２は溶融金属 ３は凝固した酸化物溶融体 FIG. 1 is an explanatory diagram showing an example of the manufacturing method of the present invention. l is molten body 2 is molten metal 3 is solidified oxide melt
Claims (3)
させた金属２中を通して同溶融金属２中で酸化物溶融体
１を急冷凝固させた後、この凝固した酸化物溶融体３の
外周に付着している溶融金属２ａを凝固させて同金属２
ａで被覆された線条体４を製造するようにしたことを特
徴とする酸化物超電導線条体の製造方法。(1) The oxide melt 1 that will become a superconductor is passed continuously through the molten metal 2 and the oxide melt 1 is rapidly solidified in the same molten metal 2, and then the solidified oxide melt 3 The molten metal 2a adhering to the outer periphery of the metal 2a is solidified to form the same metal 2a.
A method for manufacturing an oxide superconducting wire body, characterized in that a wire body 4 coated with (a) is manufactured.
する特許請求の範囲第１項記載の酸化物超電導線条体の
製造方法。(2) The method for producing an oxide superconducting wire according to claim 1, wherein the molten metal 2 is silver or a silver alloy.
囲とすることを特徴とする特許請求の範囲第１項記載の
酸化物超電導線条体の製造方法。(3) The method for manufacturing an oxide superconducting wire body according to claim 1, characterized in that the temperature of the molten metal 2 is in the range of 800°C to 1200°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62335979A JPH01176608A (en) | 1987-12-29 | 1987-12-29 | Manufacture of oxide superconductive linear body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62335979A JPH01176608A (en) | 1987-12-29 | 1987-12-29 | Manufacture of oxide superconductive linear body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01176608A true JPH01176608A (en) | 1989-07-13 |
Family
ID=18294441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62335979A Pending JPH01176608A (en) | 1987-12-29 | 1987-12-29 | Manufacture of oxide superconductive linear body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01176608A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6604273B1 (en) | 1994-09-30 | 2003-08-12 | Canon Kabushiki Kaisha | Method of manufacturing an oxide superconducting wire |
| JP2007055698A (en) * | 2005-08-22 | 2007-03-08 | Asyst Shinko Inc | Stacker crane |
-
1987
- 1987-12-29 JP JP62335979A patent/JPH01176608A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6604273B1 (en) | 1994-09-30 | 2003-08-12 | Canon Kabushiki Kaisha | Method of manufacturing an oxide superconducting wire |
| JP2007055698A (en) * | 2005-08-22 | 2007-03-08 | Asyst Shinko Inc | Stacker crane |
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