JPS63276825A - Manufacturing of oxide superconducting wire rod - Google Patents
Manufacturing of oxide superconducting wire rodInfo
- Publication number
- JPS63276825A JPS63276825A JP62110555A JP11055587A JPS63276825A JP S63276825 A JPS63276825 A JP S63276825A JP 62110555 A JP62110555 A JP 62110555A JP 11055587 A JP11055587 A JP 11055587A JP S63276825 A JPS63276825 A JP S63276825A
- Authority
- JP
- Japan
- Prior art keywords
- wire rod
- superconducting wire
- wire
- manufacturing
- metal
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 17
- ZJRXSAYFZMGQFP-UHFFFAOYSA-N barium peroxide Chemical compound [Ba+2].[O-][O-] ZJRXSAYFZMGQFP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 239000011812 mixed powder Substances 0.000 abstract description 3
- 229910052709 silver Inorganic materials 0.000 abstract description 2
- 239000004332 silver Substances 0.000 abstract description 2
- 239000012254 powdered material Substances 0.000 abstract 1
- 239000002887 superconductor Substances 0.000 abstract 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 229960004643 cupric oxide Drugs 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000005491 wire drawing Methods 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
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は高温で超電導性を示す酸化物系超電導線材の製
造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing an oxide-based superconducting wire that exhibits superconductivity at high temperatures.
従来、酸化物超電導線材の製造方法については日本金属
学会春期（第１００回・東京）大会講演概要集ｐ１６０
に論じられているように、科学技術庁金属材料技術研究
所がＬａ−８ｒ−Ｃｕ系の酸化物超電導線材を発表して
いる。この方法は、原料粉末としてＬａｚＯａ、５ｒＣ
Ｏｓ、ＣｕＯを用い、これらを焼結・粉砕して酸化物粉
末を作成扱銅シース中に充填して線引きするものであり
。Conventionally, regarding the manufacturing method of oxide superconducting wire, the Japan Institute of Metals Spring (100th Tokyo) Conference Abstracts, page 160
As discussed in , the Institute of Metals and Materials Technology of the Science and Technology Agency has announced a La-8r-Cu-based oxide superconducting wire. This method uses LazOa and 5rC as raw material powders.
Using Os and CuO, these are sintered and pulverized to produce oxide powder, which is then filled into a copper sheath and drawn.
銅シース除去後９００℃で５時間焼成し約４０にで超電
導を確認している。また、４月３日付の日刊工業新聞に
はＹ−Ｂａ−Ｃｕ系の酸化物を同様に銅系のシース材に
充填して線材化する超電導臨界温度８７Ｋが達成できる
と報告されている。After removing the copper sheath, it was fired at 900°C for 5 hours and superconductivity was confirmed at about 40°C. Furthermore, the Nikkan Kogyo Shimbun dated April 3rd reports that a superconducting critical temperature of 87 K can be achieved by similarly filling a copper-based sheath material with a Y-Ba-Cu based oxide to form a wire.
酸化物系超電導物質は臨界温度が液体窒素温度を上回る
新物質として注目されている０発明者らは、鋭意研究を
行うことにより、この酸化物は非常に脆く、線材化の過
程で破壊され超電導特性が失われたり、低下したりする
問題があることを見い出した。線材化にともなうこの様
な特性劣化を回復する手段としては、９００℃程度の高
温度での再加熱処理が有効であるが、線材中でこの処理
を行うと酸素供給がないためにかえって特性を劣化する
という欠点があった。そのため、再加熱処理を行う場合
には、金属シースを除去したのち大気中または、＊累算
囲気中で熱処理する必要があった。金属シースを除去し
た線材は極めて脆く。Oxide-based superconducting materials are attracting attention as new materials whose critical temperature exceeds the temperature of liquid nitrogen.The inventors conducted intensive research and found that this oxide is extremely brittle and breaks down during the process of making wire, making it superconducting. It has been discovered that there is a problem in which properties are lost or deteriorated. Reheating at a high temperature of about 900°C is effective as a means to recover from the deterioration in properties that occurs when the wire is made into a wire, but if this treatment is performed inside the wire, the properties will deteriorate due to the lack of oxygen supply. The drawback was that it deteriorated. Therefore, when performing reheating treatment, it was necessary to remove the metal sheath and then perform the heat treatment in the atmosphere or *cumulative surroundings. The wire with the metal sheath removed is extremely brittle.
実用材料としては問題がある。There are problems as a practical material.
一方、この様な線材化加工の影響を取り除くには、金属
シース中での焼成が望ましいが、従来原料粉末として用
いられている炭酸塩は高温で溶融し溶融炭酸塩となって
金属を腐食させるという問題があった。さらに、炭酸塩
の熱分解によって炭酸ガスを発生し金属シース内の酸素
が希薄となるという問題があった。本発明の目的は高温
で熱処理可能な金属シースにより保護された長尺超電導
線材の製造方法を提供するにある。On the other hand, firing in a metal sheath is desirable in order to eliminate the effects of wire processing, but the carbonate conventionally used as raw material powder melts at high temperatures and becomes molten carbonate, which corrodes the metal. There was a problem. Furthermore, there is a problem in that carbon dioxide gas is generated due to thermal decomposition of the carbonate, and oxygen in the metal sheath becomes diluted. An object of the present invention is to provide a method for manufacturing a long superconducting wire protected by a metal sheath that can be heat treated at high temperatures.
上記目的は酸化物系超電導物質が金属担持体内に包含さ
れた断面構造を有する超電導線材の製造方法において、
過酸化バリウムを含む原料粉末を金属中に充填した後に
線材加工と熱処理を施して超電導性を発現させることに
より達成される。The above object is a method for manufacturing a superconducting wire having a cross-sectional structure in which an oxide superconducting substance is included in a metal carrier,
This is achieved by filling a metal with raw material powder containing barium peroxide and then subjecting it to wire processing and heat treatment to develop superconductivity.
過酸化バリウムは金属シース中での酸素供給の役割を担
う、また、金属シースは過酸化バリウムによって著しく
腐食されることはない。Barium peroxide plays the role of supplying oxygen in the metal sheath, and the metal sheath is not significantly corroded by barium peroxide.
まず、原料粉末として純度９９％以上の酸化イツトリウ
ム（Ｙｘ、Ｏａ）、酸化第２銅（Ｃｕｂ）。First, yttrium oxide (Yx, Oa) and cupric oxide (Cub) with a purity of 99% or more are used as raw material powders.
並びに過酸化バリウム（Ｂ ａ Ｏｚ ）を用いた。こ
れらの粉末を重量でそれぞれ１６．７ｇ、３４．６ｇ、
４８．７ｇ 秤量し、これらをメノー乳鉢で２時間混合
し、１００ｇの混合粉末を得た。この一部を、直径６ミ
リメードル、長さ３００ミリ、肉厚０．８ ミリの銀バ
イブ中に充填した。この方法を以下に述べる。まず、パ
イプの片側１００ｍｍを潰して塞ぎ、混合粉末をもう一
方の端から導入し、パイプ中央部に充填した。これを軽
く加圧した後に他端を１００１潰して塞いだ、この粉末
を充填したパイプをスウエージャにかけて５０％の減面
加工を施した。この後、焼鈍・線引きを繰り返し行い直
径１．６＋ａｍの線材とした。焼鈍条件は３５０℃、１
５分とした。この線材を電気炉内で８５０℃、２０時間
焼焼成炉冷し超電導線材とした０図は、本実施例によっ
てえられた線材の超電導特性気抵抗が減少し、超電導線
の製造が可能であることがわかる。Also, barium peroxide (B a Oz ) was used. The weight of these powders is 16.7g and 34.6g, respectively.
48.7 g was weighed and mixed in an agate mortar for 2 hours to obtain 100 g of mixed powder. A portion of this was filled into a silver vibrator having a diameter of 6 mm, a length of 300 mm, and a wall thickness of 0.8 mm. This method will be described below. First, 100 mm of one side of the pipe was crushed and closed, and the mixed powder was introduced from the other end to fill the center of the pipe. After lightly pressurizing this, the other end was closed by crushing 1001, and the pipe filled with this powder was applied to a swager to reduce the area by 50%. Thereafter, annealing and wire drawing were repeated to obtain a wire rod with a diameter of 1.6+am. The annealing conditions are 350℃, 1
It was set as 5 minutes. Figure 0 shows that this wire was baked in an electric furnace at 850°C for 20 hours and then cooled as a superconducting wire.The superconducting characteristics of the wire obtained in this example decreased in resistance, making it possible to manufacture a superconducting wire. I understand that.
本発明により、金属シー入内での焼成が可能となり、金
属被覆を有する超電導線材の製造が容易に可能となった
。すなわち、原料粉末の中に高い酸素解離圧を有する過
酸化バリウムを添加することにより、金属シース中にお
いて原料粉末を十分な酸素供給のもとで焼結させること
が初めて可能となった。According to the present invention, it has become possible to perform firing within a metal sheath, and it has become possible to easily manufacture a superconducting wire having a metal coating. That is, by adding barium peroxide having a high oxygen dissociation pressure to the raw material powder, it has become possible for the first time to sinter the raw material powder in a metal sheath with a sufficient supply of oxygen.
竿１図は本発明の一実施例の酸化物超電導線材の超電渚
Ｉ目
０／θ ２θ Ｊｏ ４θ ５θ ｌθ
７θ θ０ タ０１θθ温屓 （Ｋ）Fig. 1 shows the superconductivity of the oxide superconducting wire according to one embodiment of the present invention.0/θ 2θ Jo 4θ 5θ lθ
7θ θ0 TA01θθ temperature (K)
Claims (1)
面構造を有する超電導線材の製造方法において、過酸化
バリウムを含む原料粉末を金属中に充填した後に線材加
工と熱処理を施して超電導性を発現させることを特徴と
する酸化物超電導線材の製造方法。1. In a method for manufacturing a superconducting wire having a cross-sectional structure in which an oxide-based superconducting substance is contained in a metal carrier, raw material powder containing barium peroxide is filled into the metal, and then wire processing and heat treatment are performed to obtain superconductivity. A method for producing an oxide superconducting wire characterized by expressing the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62110555A JPS63276825A (en) | 1987-05-08 | 1987-05-08 | Manufacturing of oxide superconducting wire rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62110555A JPS63276825A (en) | 1987-05-08 | 1987-05-08 | Manufacturing of oxide superconducting wire rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63276825A true JPS63276825A (en) | 1988-11-15 |
Family
ID=14538797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62110555A Pending JPS63276825A (en) | 1987-05-08 | 1987-05-08 | Manufacturing of oxide superconducting wire rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63276825A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63279513A (en) * | 1987-05-11 | 1988-11-16 | Toshiba Corp | Superconductor wire rod and its manufacture |
| JPS6448327A (en) * | 1987-07-24 | 1989-02-22 | Asea Brown Boveri | Manufacture of ceramic high temperature superconductor sheathed wire |
| JPH01140520A (en) * | 1987-02-05 | 1989-06-01 | Sumitomo Electric Ind Ltd | Manufacture of composite oxide ceramic superconductive wire |
-
1987
- 1987-05-08 JP JP62110555A patent/JPS63276825A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01140520A (en) * | 1987-02-05 | 1989-06-01 | Sumitomo Electric Ind Ltd | Manufacture of composite oxide ceramic superconductive wire |
| JPS63279513A (en) * | 1987-05-11 | 1988-11-16 | Toshiba Corp | Superconductor wire rod and its manufacture |
| JPS6448327A (en) * | 1987-07-24 | 1989-02-22 | Asea Brown Boveri | Manufacture of ceramic high temperature superconductor sheathed wire |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2914331B2 (en) | Method for producing composite oxide ceramic superconducting wire | |
| US5306700A (en) | Dense melt-based ceramic superconductors | |
| JPH0494019A (en) | Manufacture of bismuth-based oxide superconductor | |
| JPS63276825A (en) | Manufacturing of oxide superconducting wire rod | |
| CA1327119C (en) | Method of producing a superconductive oxide conductor | |
| JPS63276819A (en) | Manufacture of ceramic superconductive filament | |
| JP2566942B2 (en) | Method for producing compound superconducting wire | |
| JPH04121912A (en) | Manufacture of oxide high temperature superconductive conductor | |
| JPS63233066A (en) | Production of superconductive body | |
| JP2592838B2 (en) | Method for manufacturing compound superconducting wire | |
| JPH0197317A (en) | Synthesis of high temperature oxide superconductor wire | |
| JPS63252309A (en) | Manufacture of oxide superconductive wire | |
| JP2583504B2 (en) | Superconducting wire manufacturing method | |
| JP2595309B2 (en) | Manufacturing method of oxide superconducting wire | |
| JPS63281319A (en) | Manufacture of compound superconductive wire | |
| JPS63179032A (en) | Alloy for superconducting material and its production | |
| JPH04292817A (en) | Manufacture of high temperature superconductor | |
| JP2904348B2 (en) | Method for manufacturing compound superconducting wire | |
| JPH01123405A (en) | Manufacture of superconducting power lead | |
| JPS63248009A (en) | Superconductive wire and its manufacture | |
| JPH01110710A (en) | Manufacture of oxide superconducting coil | |
| JPH01115015A (en) | Manufacture of superconductor wire material | |
| JPH01283713A (en) | Manufacture of linear superconductive material | |
| JPH01279509A (en) | Manufacture of linear superconductive material | |
| JPH01161621A (en) | Manufacture of oxide superconducting wire |