JPH0471114A - Manufacture of oxide superconducting wire material - Google Patents
Manufacture of oxide superconducting wire materialInfo
- Publication number
- JPH0471114A JPH0471114A JP2183151A JP18315190A JPH0471114A JP H0471114 A JPH0471114 A JP H0471114A JP 2183151 A JP2183151 A JP 2183151A JP 18315190 A JP18315190 A JP 18315190A JP H0471114 A JPH0471114 A JP H0471114A
- Authority
- JP
- Japan
- Prior art keywords
- wire material
- manufacture
- amorphous
- superconducting wire
- oxide
- 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 abstract description 12
- 239000000463 material Substances 0.000 title abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000012808 vapor phase Substances 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 18
- 239000012071 phase Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 abstract description 7
- 230000008018 melting Effects 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 6
- 239000000956 alloy Substances 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052709 silver Inorganic materials 0.000 abstract description 2
- 239000004332 silver Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910014454 Ca-Cu Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-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)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は超電導線材の製造方法に係り、特にＴｌ （タ
リウム）系超電導物質からなる線材の製造方法の改良に
関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a superconducting wire, and particularly to an improvement in a method for manufacturing a wire made of a Tl (thallium)-based superconducting material.
［従来の技術］
Ｔｉ系の超電導酸化物、即ち、Ｔｌ −Ｂａ −Ｃａ
−Ｃｕ −０系の酸化物はＹ系の超電導酸化物に比較し
て臨界温度（Ｔｃ ）が高く、現在その応用面での開発
が進められている。[Prior art] Ti-based superconducting oxide, that is, Tl-Ba-Ca
-Cu -0 type oxides have a higher critical temperature (Tc) than Y type superconducting oxides, and their applications are currently being developed.
この中の主要技術の一つとして線材化、即ち、線やテー
プ等の長尺体の製造技術の確立が重要な課題となってい
る。One of the key technologies in this field is the establishment of a technology for manufacturing wire rods, that is, long objects such as wires and tapes.
この目的に対して（イ）Ａｇバイブ内に原料粉末を充填
して圧延や引き抜き加工後、熱処理を施す方法や（ロ）
ＣＶＤ法等の成膜技術を応用した方法が一般的に行なわ
れている。For this purpose, (a) a method of filling raw material powder into an Ag vibrator and subjecting it to heat treatment after rolling or drawing;
A method that applies a film forming technique such as a CVD method is generally used.
しかしながら、上記（イ）の方法では、原料粉末が酸化
物の多結晶体であるため、加工後のパイプ内で結晶が成
長する際に生成する不純物がその特性を著しく低下させ
るという問題がある。However, in the method (a) above, since the raw material powder is a polycrystalline oxide, there is a problem that impurities generated when the crystals grow in the pipe after processing significantly deteriorate its properties.
また、酸化物の成型は困難であるため、この方法では加
工プロセスが複雑となる上、数百時間の長時間熱処理を
必要とする欠点を有する。さらに、上記（ロ）の方法で
は組成の制御等に技術を要するという難点がある。Furthermore, since it is difficult to mold oxides, this method has the disadvantage that the processing process is complicated and that it requires a long heat treatment of several hundred hours. Furthermore, the above method (b) has the disadvantage that it requires techniques to control the composition, etc.
［発明が解決しようとする課題］
本発明は以上の問題を解決するためになされたもので、
不純物の生成による特性の低下が小さく、かつ成型や組
成の制御も容易である酸化物系超電導線材の製造方法を
提供することを、その目的としている。[Problems to be solved by the invention] The present invention has been made to solve the above problems.
The object of the present invention is to provide a method for producing an oxide-based superconducting wire in which properties are less degraded due to the formation of impurities, and the molding and composition can be easily controlled.
［課題を解決するための手段］
上記目的を達成するために、本発明の酸化物系超電導線
材の製造方法は、Ｂａ５Ｃａ、Ｃｕを所定の比率で含む
原料物質を、溶融状態から急冷してアモルファス状の線
材を製造した後、前記線材にＴｌを気相添加するもので
ある。[Means for Solving the Problems] In order to achieve the above object, the method for producing an oxide superconducting wire of the present invention is to rapidly cool a raw material containing Ba5Ca and Cu in a predetermined ratio from a molten state to an amorphous state. After producing a shaped wire rod, Tl is added to the wire rod in a vapor phase.
即ち、本発明においては、Ｔｌ系超超電導物質中低融点
成分であるＴｌ以外の金属元素を含む原料物質からアモ
ルファス線材を製造した後、この線材にＴ１を気相添加
して超電導線材とするものである。That is, in the present invention, after producing an amorphous wire from a raw material containing a metal element other than Tl, which is a low melting point component in a Tl-based superconducting material, T1 is added to this wire in a vapor phase to obtain a superconducting wire. It is.
上記の原料物質としては、Ｂａ、 Ｃａｓ Ｃｕの各酸
化物や炭酸化物等の混合粉末または成型体、あるいはＢ
ａ −Ｃａ −Ｃｕ系合金が用いられ、この場合の配合
はＴ１系の超電導酸化物を構成する元素の比率にほぼ一
致させるか、あるいはＢａおよびＣａを１０モル％以下
で増量することが好ましい。The above raw materials include mixed powders or molded bodies of oxides and carbonates of Ba and Cas Cu, or B
An a-Ca-Cu alloy is used, and in this case, it is preferable that the composition be approximately equal to the ratio of the elements constituting the T1-based superconducting oxide, or that the amounts of Ba and Ca be increased by 10 mol% or less.
この原料物質を溶融状態から急冷してアモルファス状の
線材、例えばテープを製造する方法としては、単ロール
法、双ロール法、プレス法等いずれの方法を用いること
かできるが、長尺化の目的に対しては単ロール法および
双ロール法か適する。To rapidly cool this raw material from a molten state to produce an amorphous wire rod, such as a tape, any method such as a single roll method, twin roll method, or press method can be used. For this purpose, single roll method and double roll method are suitable.
上記のアモルファス状の線材にＴ１を気相添加する方法
としては、溶融状態から急冷したアモルファス状の線材
を成型後、ガス発生源と共に密閉するか、窒素あるいは
これに酸素を混合したガスの気流中に置いて加熱処理す
る方法が用いられる。The method of adding T1 to the amorphous wire mentioned above in the vapor phase is to mold the amorphous wire which is rapidly cooled from the molten state and then seal it together with a gas generation source, or to add T1 to the amorphous wire in a gas flow of nitrogen or a gas mixed with oxygen. A method is used in which the material is placed in a container and heat treated.
この加熱処理は、５００℃未満の温度であるとガス発生
源からの元素の揮散が不十分となり、また９５０℃を越
えるとアモルファス体の溶融を生ずるため５００〜９５
０℃の温度範囲とする必要がある。In this heat treatment, if the temperature is less than 500°C, the volatilization of the elements from the gas generation source will be insufficient, and if the temperature exceeds 950°C, the amorphous body will melt.
It is necessary to set the temperature range to 0°C.
特に９００℃以下が好ましい。In particular, the temperature is preferably 900°C or lower.
気相添加の際のガス発生源としては、超電導組成の仮焼
粉末成型体を用いることが好ましく、この場合の仮焼粉
末は固相法、共沈法、ゲル法等により作成されたいずれ
の粉末を用いることが可能である。As a gas generation source during gas phase addition, it is preferable to use a calcined powder molded body having a superconducting composition. It is possible to use powder.
［作用］
上記構成により、本発明の方法においては、アモルファ
ス状の線材に低融点成分であるＴｌを気相添加するため
、不純物の生成による特性の低下を減少させることがで
き、かつ成型性を向上させることができる。即ち、原料
中に低融点成分が存在すると他の構成元素との融点の差
が大きいため成型性が著しく低下するが、比較的高融点
の超電導構成元素で可どう性を有する線材を製造し、こ
の表面に低融点元素を拡散させて酸化させることにより
、不純物の生成や成型性の低下が防止される。[Function] With the above configuration, in the method of the present invention, since Tl, which is a low melting point component, is added to the amorphous wire in the vapor phase, it is possible to reduce the deterioration of properties due to the formation of impurities, and to improve the formability. can be improved. That is, when a low melting point component is present in the raw material, the difference in melting point from other constituent elements is large, resulting in a significant decrease in formability. By diffusing and oxidizing a low melting point element on this surface, generation of impurities and deterioration of moldability are prevented.
また低融点成分は気相添加されるため、その組成の制御
も容易である。Furthermore, since the low melting point component is added in a gas phase, its composition can be easily controlled.
［実施例］ 以下、本発明の一実施例について説明する。[Example] An embodiment of the present invention will be described below.
単ロール装置を用いて、Ｂａ２ Ｃａ２ ＣＬＩＰ（合
金を溶融状態から急冷し、アモルファス状のテープを製
造した。Ba2Ca2 CLIP (alloy) was rapidly cooled from the molten state using a single roll apparatus to produce an amorphous tape.
このテープとＴｌＢａ２ Ｃａ２ Ｃｕ３０ ｙ組成の
仮焼粉末成型体とを銀チューブ内に封入し、９００ ’
Ｃで１時間加熱して熱処理を施した。This tape and a calcined powder molded body having a composition of TlBa2Ca2Cu30y were sealed in a silver tube and heated for 900'
Heat treatment was performed by heating at C for 1 hour.
このようにして得られた超電導テープの電気抵抗の温度
依存性を図に示す。またこのテープのＸ線回折測定結果
は基材ビークとともにＴｌＢａ２ Ｃａ２Ｃｕ３０ｖと
ＴｌＢａ２ ＣａＣｕ２０７のピークが認められた。The temperature dependence of the electrical resistance of the superconducting tape thus obtained is shown in the figure. Further, in the X-ray diffraction measurement results of this tape, peaks of TlBa2 Ca2Cu30v and TlBa2 CaCu207 were observed as well as the base material peak.
これらの結果から、上記の超電導テープにおける１２２
に相の生成と９７にの臨界電流密度（Ｔｃｅｎｄ）が確
認された。From these results, 122 in the above superconducting tape
It was confirmed that a phase was formed at 1 and a critical current density (Tcend) of 97 was observed.
［発明の効果コ
以上述べたように、本発明の酸化物系超電導線材の製造
方法によれば、不純物相の生成を抑制できるとともに成
型性に優れたＴｌ系超超電導線材容易に製造することが
できる。またその組成の制御も容易である利点を有する
。[Effects of the Invention] As described above, according to the method for producing an oxide-based superconducting wire of the present invention, it is possible to easily produce a Tl-based superconducting wire that can suppress the formation of impurity phases and has excellent formability. can. It also has the advantage that its composition can be easily controlled.
図は本発明の方法により製造された超電導テープの一実
施例の電気抵抗の温度依存性を示すグラフである。The figure is a graph showing the temperature dependence of the electrical resistance of an example of a superconducting tape manufactured by the method of the present invention.
Claims (3)
、溶融状態から急冷してアモルファス状の線材を製造し
た後、前記線材にＴｌを気相添加することを特徴とする
酸化物系超電導線材の製造方法。(1) An oxide system characterized in that a raw material containing Ba, Ca, and Cu in a predetermined ratio is rapidly cooled from a molten state to produce an amorphous wire rod, and then Tl is added to the wire rod in a vapor phase. A method for manufacturing superconducting wire.
される請求項１記載の酸化物系超電導線材の製造方法。(2) The method for manufacturing an oxide-based superconducting wire according to claim 1, wherein the gas phase addition of Tl is performed using a Tl-based superconducting oxide.
求項１記載の酸化物系超電導線材の製造方法。(3) The method for producing an oxide-based superconducting wire according to claim 1, wherein the gas phase addition is performed at a temperature of 500 to 950°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2183151A JPH0471114A (en) | 1990-07-10 | 1990-07-10 | Manufacture of oxide superconducting wire material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2183151A JPH0471114A (en) | 1990-07-10 | 1990-07-10 | Manufacture of oxide superconducting wire material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0471114A true JPH0471114A (en) | 1992-03-05 |
Family
ID=16130691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2183151A Pending JPH0471114A (en) | 1990-07-10 | 1990-07-10 | Manufacture of oxide superconducting wire material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0471114A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008275137A (en) * | 2007-04-26 | 2008-11-13 | S & T Daewoo Co Ltd | Damper with a relative displacement measurement sensor |
-
1990
- 1990-07-10 JP JP2183151A patent/JPH0471114A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008275137A (en) * | 2007-04-26 | 2008-11-13 | S & T Daewoo Co Ltd | Damper with a relative displacement measurement sensor |
| US7992692B2 (en) | 2007-04-26 | 2011-08-09 | S & T Daewoo Co., Ltd. | Damper equipped with relative displacement detecting sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0440289B2 (en) | ||
| JP2821794B2 (en) | Oxide superconductor and manufacturing method thereof | |
| JPH0471114A (en) | Manufacture of oxide superconducting wire material | |
| JPH01305823A (en) | Each production of superconductor and superconducting wire rod | |
| JP3049314B1 (en) | Manufacturing method of oxide superconducting composite wire | |
| JP2610033B2 (en) | Method for producing oxide-based superconducting molded body | |
| JPH0462726A (en) | Manufacture of oxide superconductive wire material | |
| JP3174847B2 (en) | Superconducting whisker and manufacturing method thereof | |
| US3792990A (en) | Alloy for superconductive magnet | |
| JPH02141423A (en) | Production of thallium-based superconductor | |
| JPS63225413A (en) | Manufacture of compound superconductive wire | |
| JPH02192401A (en) | Production of oxide superconductor and oxide superconducting wire | |
| JP3538620B2 (en) | Method for producing thallium-based superconducting silver-based sheath wire having high crystal orientation and thallium-based superconducting silver-based sheath wire obtained by the method | |
| JP2545443B2 (en) | Method for manufacturing oxide superconductor | |
| JPH02153821A (en) | Production of thallium-based superconductor | |
| JPH04292452A (en) | Production of oxide superconductor and wire | |
| JPH02204325A (en) | Production of thallium-based superconductor | |
| JPH04253115A (en) | Manufacture of oxide superconductive wire rod | |
| JPH01212226A (en) | Production of oxide superconducting material | |
| JPH0416510A (en) | Production of oxide superconducting bulk material | |
| JPS62219411A (en) | Manufacture of pbmo6s8 system compound superconductor | |
| JPS63313430A (en) | Manufacture of ceramic high-temperature superconductive material fine wire | |
| JPS61256507A (en) | Manufacture of pbm02s8 based compound superconductive wire material | |
| JPS621833A (en) | Manufacture of pb-type metallic superconducting material | |
| JPH01176608A (en) | Manufacture of oxide superconductive linear body |