JPH03129705A - Superconducting coil of oxide and manufacture thereof - Google Patents
Superconducting coil of oxide and manufacture thereofInfo
- Publication number
- JPH03129705A JPH03129705A JP20258989A JP20258989A JPH03129705A JP H03129705 A JPH03129705 A JP H03129705A JP 20258989 A JP20258989 A JP 20258989A JP 20258989 A JP20258989 A JP 20258989A JP H03129705 A JPH03129705 A JP H03129705A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- oxide superconducting
- rubber tube
- raw material
- filled
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000002994 raw material Substances 0.000 claims abstract description 49
- 239000000843 powder Substances 0.000 claims abstract description 42
- 239000005060 rubber Substances 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 238000011282 treatment Methods 0.000 claims abstract description 19
- 229910052709 silver Inorganic materials 0.000 claims description 12
- 239000004332 silver Substances 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 239000002887 superconductor Substances 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 3
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 2
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- 235000010216 calcium carbonate Nutrition 0.000 abstract 1
- 208000037584 hereditary sensory and autonomic neuropathy Diseases 0.000 abstract 1
- 229910000018 strontium carbonate Inorganic materials 0.000 abstract 1
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000007667 floating Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000005245 sintering Methods 0.000 description 7
- 238000007711 solidification Methods 0.000 description 7
- 230000008023 solidification Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 101100194003 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) rco-3 gene Proteins 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- -1 copper and silver Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004857 zone melting Methods 0.000 description 1
Landscapes
- Superconductors And Manufacturing Methods Therefor (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、酸化物超電導コイル及びその作製方法に関し
、特に、高密度で均質なクラックの少ない配向性のある
多結晶体からなる酸化物超電導コイルを得る技術、及び
焼結処理法、一方向凝固法、浮遊帯域溶融法（フローテ
ィングゾーン法）、レーザ照射法、プラズマ照射法等の
超電導特性を向上させる処理の前処理材として使用する
コイル状の高密度で均質な原料材を得る技術に関するも
のである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an oxide superconducting coil and a method for manufacturing the same, and particularly relates to an oxide superconducting coil made of an oriented polycrystalline body that is highly dense, homogeneous, and has few cracks. Coil-shaped coils used as pre-treatment materials for processes to improve superconducting properties, such as technology for obtaining coils, and sintering, unidirectional solidification, floating zone melting, laser irradiation, plasma irradiation, etc. This relates to technology for obtaining high-density and homogeneous raw materials.
従来、高温度で超電導現象を示す酸化物超電導体を得る
ためには、まず、超電導原料粉末をゴム管に充填し、こ
の超電導原料粉末が充填されているゴム管に等方圧力処
理を施す等方圧力（コールド・アイソスタティク・プレ
シャー：ＣＩＰ）装置により酸化物超電導原料棒を作製
し、この酸化物超電導原料棒に焼結処理法、一方向凝固
法、フローティングゾーン法、レーザ照射法、プラズマ
照射法等により超電導特性を向上させていた。Conventionally, in order to obtain an oxide superconductor that exhibits a superconducting phenomenon at high temperatures, a rubber tube is first filled with superconducting raw material powder, and the rubber tube filled with this superconducting raw material powder is subjected to isotropic pressure treatment. An oxide superconducting raw material rod is produced using a cold isostatic pressure (CIP) device, and this oxide superconducting raw material rod is subjected to a sintering treatment method, a unidirectional solidification method, a floating zone method, a laser irradiation method, and a plasma irradiation method. Superconducting properties were improved through irradiation methods.
しかしながら、前記従来の酸化物超電導原料棒を作製す
るＣＩＰ処理においては、ＣＩＰ処理中の高圧力により
、ゴム管内の材料がゴム管及び原料粉末の自然な縮みの
形状に依在していたため、均一な太さの直線性の良い原
料材（棒）を得ることができなかった。However, in the conventional CIP process for producing oxide superconducting raw material rods, due to the high pressure during the CIP process, the material inside the rubber tube was dependent on the natural shrinkage shape of the rubber tube and the raw material powder, so the material was uniform. It was not possible to obtain a raw material (rod) with a certain thickness and good linearity.
また、酸化物超電導原料コイルを作製するＣＩＰ処理に
おいては、ＣＩＰ処理中に高圧力により、ゴム管及びゴ
ム管内酸化物超電導原料が縮み、ＣＩＰ処理後圧力が下
がった時、元の型にもどるため、ゴム管内の酸化物超電
導原料コイルにクラックが生じる。In addition, in the CIP process for producing oxide superconducting raw material coils, the rubber tube and the oxide superconducting raw material inside the rubber tube shrink due to high pressure during the CIP process, and return to their original shape when the pressure decreases after the CIP process. , cracks occur in the oxide superconducting raw material coil inside the rubber tube.
このクラックが生じた酸化物超電導原料コイルに焼結処
理法、一方向凝固法、フローティングゾーン法、レーザ
照射法、プラズマ照射法等の処理を施しても、高密度で
均質なクラックの少ない配向性のある多結晶体からなる
酸化物超電導コイルが得られないという問題があった。Even if this cracked oxide superconducting raw material coil is subjected to treatments such as sintering, unidirectional solidification, floating zone, laser irradiation, and plasma irradiation, it will still maintain a high-density, homogeneous orientation with few cracks. There was a problem in that an oxide superconducting coil made of a certain polycrystalline substance could not be obtained.
本発明は、前記問題点を解決するためになされたもので
ある。The present invention has been made to solve the above problems.
本発明の目的は、均一な太さの高密度で均質なクラック
の少ないコイル状酸化物超電導原料材を得ることができ
る技術を提供することにある。An object of the present invention is to provide a technique capable of obtaining a coiled oxide superconducting raw material having uniform thickness, high density, and homogeneity with few cracks.
本発明の他の目的は、高温度で超電導現象を示す酸化物
超電導コイルを提供することにある。Another object of the present invention is to provide an oxide superconducting coil that exhibits superconducting phenomena at high temperatures.
本発明の前記ならびにその他の目的と新規な特徴は、本
明細書の記述及び添付図面によって明らかになるであろ
う。The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.
前記目的を達成するために、本発明は、高密度で均質な
クラックの少ない配向性の良い多結晶体からなる酸化物
超電導コイルである。In order to achieve the above object, the present invention provides an oxide superconducting coil made of a highly oriented polycrystalline body that is highly dense, homogeneous, and has few cracks.
また、高密度で均質なクラックの少ない配向性の良い多
結晶体からなるコイル状酸化物超電導体に、銅、銀等の
低抵抗金属を被覆した酸化物超電導コイルである。Further, it is an oxide superconducting coil in which a coiled oxide superconductor made of a polycrystalline body with high density, homogeneity, and good orientation with few cracks is coated with a low-resistance metal such as copper or silver.
また、コイル状酸化物超電導原料材作製方法において、
酸化物超電導原料粉末を可撓性管に充填する工程と、該
酸化物超電導原料粉末が充填されている可撓性管に長さ
方向に・張力をもたせてコイル状に巻回する工程と、該
酸化物超電導原料粉末が充填されているコイル状可撓性
管に等方圧力処理を施す工程とを備えたことを最も主要
な特徴とする。In addition, in the method for producing coiled oxide superconducting raw material,
a step of filling a flexible tube with the oxide superconducting raw material powder; a step of winding the flexible tube filled with the oxide superconducting raw material powder into a coil shape while applying tension in the length direction; The most important feature is that the method includes a step of subjecting the coiled flexible tube filled with the oxide superconducting raw material powder to isostatic pressure treatment.
また、前記可撓性管は、ゴム、銅、銀等のうちの一つか
らなることを特徴とする。Further, the flexible tube is made of one of rubber, copper, silver, etc.
前述した手段によれば、酸化物超電導原料粉末を可撓性
管、例えば、ゴム、銅、銀等のうち一つからなる管に充
填し、この酸化物超電導原料粉末が充填されている可撓
性管に長さ方向に張力をもたせてコイル状に巻回し、こ
の酸化物超電導原料粉末が充填されているコイル状可撓
性管に等方圧力処理を施することにより、均一な太さの
高密度で均質なクラックの少ないコイル状酸化物超電導
原料材を得ることができる。According to the above-described means, the oxide superconducting raw material powder is filled into a flexible tube, for example, a tube made of one of rubber, copper, silver, etc., and the flexible tube filled with the oxide superconducting raw material powder is By applying tension to the sex tube in the longitudinal direction and winding it into a coil shape, and applying isostatic pressure treatment to the coiled flexible tube filled with this oxide superconducting raw material powder, a uniform thickness can be obtained. A coiled oxide superconducting raw material that is highly dense, homogeneous, and has few cracks can be obtained.
このコイル状酸化物超電導原料材に、焼結処理法、一方
向凝固法、フローティングゾーン法、レーザ照射法、プ
ラズマ照射法等の配向性の良い多結晶体形成処理を施す
ことにより、高密度で均質なクラックの少ない配向性の
良い多結晶体からなる酸化物超電導コイルが得られる。This coiled oxide superconducting raw material is processed to form a polycrystalline body with good orientation, such as sintering, unidirectional solidification, floating zone, laser irradiation, and plasma irradiation. An oxide superconducting coil made of homogeneous polycrystalline material with few cracks and good orientation can be obtained.
この高密度で均質なクラックの少ない配向性の良い多結
晶体からなる酸化物超電導コイルは、液体窒素の温度の
雰囲気中において超電導現象を示した。This oxide superconducting coil made of a high-density, homogeneous, well-oriented polycrystal with few cracks exhibited superconductivity in an atmosphere at the temperature of liquid nitrogen.
また、前記可撓性のある管として銅、銀等の低抵抗金属
のうちの一つを用いることにより、従来から知られてい
るように超電導特性を安定にすると共に酸化物超電導コ
イルの超電導状態が破壊された時、酸化物超電導コイル
及び装置の保護回路としての役目をすることができる。Furthermore, by using one of low-resistance metals such as copper or silver for the flexible tube, the superconducting properties can be stabilized and the superconducting state of the oxide superconducting coil can be stabilized, as is conventionally known. When destroyed, it can serve as a protection circuit for the oxide superconducting coil and device.
第１図乃至第５図は、本発明の実施例■のコイル状酸化
物超電導原料材作製方法を実施するための装置の概略構
成を示す図である。FIGS. 1 to 5 are diagrams showing a schematic configuration of an apparatus for carrying out the method for producing a coiled oxide superconducting raw material according to Example 2 of the present invention.
博１図（ゴム管固定金具の斜視図）に示すように、本実
施例のゴム管巻き付は円筒金具１０は、ゴム管固定穴１
１を有する円筒金具１２からなっている。As shown in Figure 1 (perspective view of the rubber tube fixing fitting), the rubber tube of this embodiment is wrapped around the cylindrical fitting 10 through the rubber tube fixing hole 1.
It consists of a cylindrical metal fitting 12 having a diameter of 1.
また、第２図（超電導原料粉末入りゴム管の概略構成を
示す図）に示すように、超電導原料粉末入りゴム管（パ
イプ） ２０は、前記第１図に示す円筒金具１２に設け
られているゴム管固定穴１１に貫通して固定する固定用
針金２１と、粉末綴じ込め用針金２２と、ゴム管２３と
からなっている。Further, as shown in FIG. 2 (a diagram showing a schematic configuration of a rubber tube containing superconducting raw material powder), a rubber tube (pipe) 20 containing superconducting raw material powder is provided in the cylindrical metal fitting 12 shown in FIG. It consists of a fixing wire 21 that penetrates and fixes to the rubber tube fixing hole 11, a powder binding wire 22, and a rubber tube 23.
すなわち、ゴム管２３に酸化物超電導原料粉末２４Ａを
挿入し、第３図（超電導原料粉末入りゴム管の端部詳細
な構成を示す図）に示すように、そのゴム管２３の両端
部を、固定用針金２１を内側にして折り曲げ、固定用針
金２１が内に閉じ込められるように粉末綴じ込め用針金
２２で縛り付けたものである。That is, the oxide superconducting raw material powder 24A is inserted into the rubber tube 23, and as shown in FIG. It is bent with the fixing wire 21 facing inside and tied with a powder binding wire 22 so that the fixing wire 21 is trapped inside.
酸化物超電導原料粉末は、例えば、Ｂｉ２０ｉ（１モル
）、ＰｂＯ（０，２モル） 、５ｒＣＯ，（１モル）、
ＣａＣ０ａ （１モル） 、ＣｕＯ（２モル）を混合し
て、それを８００℃で工２〜２４時間仮焼したものを粉
末にしたものを用いる。The oxide superconducting raw material powder is, for example, Bi20i (1 mol), PbO (0.2 mol), 5rCO, (1 mol),
A mixture of CaC0a (1 mol) and CuO (2 mol) is used, which is calcined at 800° C. for 2 to 24 hours to form a powder.
そして、ゴム管２３に酸化物超電導原料粉末を均質に充
填し、ゴム管２３の両端に固定用針金２１を取り付けて
、粉末綴じ込め用針金２２でゴム管２３の両端を縛る。Then, the rubber tube 23 is uniformly filled with the oxide superconducting raw material powder, the fixing wires 21 are attached to both ends of the rubber tube 23, and both ends of the rubber tube 23 are tied up with the powder binding wires 22.
この粉末入りゴム管２０に取り付けられている固定用針
金２１を、第１図に示す円筒金具１２に設けられている
ゴム管固定穴１１に貫通させて。The fixing wire 21 attached to this powder-filled rubber tube 20 is passed through the rubber tube fixing hole 11 provided in the cylindrical metal fitting 12 shown in FIG.
第４図（超電導原料粉末入りゴム管をゴム管巻き付は円
筒金具に取り付けた斜視図及び公知のＣＩＰ装置の要部
概略構成を示す説明図）に示すように、その固定用針金
２１の両端を粉末入りゴム管２０に張力が加わるように
しっかりと連結して、粉末入りゴム管２０を円筒金具１
２に固定する。As shown in FIG. 4 (a perspective view showing a rubber tube containing superconducting raw material powder wrapped around a cylindrical metal fitting and an explanatory diagram showing a schematic configuration of main parts of a known CIP device), both ends of the fixing wire 21 are shown. are firmly connected to the powder-filled rubber tube 20 so that tension is applied to the powder-filled rubber tube 20, and the powder-filled rubber tube 20 is attached to the cylindrical metal fitting 1.
Fixed at 2.
次に、複数の粉末入りゴム管２０が円筒金具１２に固定
されたゴム管巻き付は円筒金具１０を、第４図に示すＣ
ＩＰ装置３０の液体圧シリンダ−（例えば油圧シリンダ
ー） ３１の中に入れ、高圧力によるＣＩＰ処理を行う
、ＣＩＰ処理の圧力は、２０００から４０００気圧で実
施する。ＣＩＰ処理後、粉末入りゴム管２０の一端を切
断し、コイル状酸化物超電導原料材を取り出す。そのコ
イル状酸化物超電導原料材を第５図（コイル状酸化物超
電導原料材の外観図）に示す。Next, a plurality of powder-filled rubber tubes 20 are fixed to the cylindrical fitting 12, and the cylindrical fitting 10 is wrapped around the cylindrical fitting 12 as shown in FIG.
It is placed in a liquid pressure cylinder (for example, a hydraulic cylinder) 31 of the IP device 30 and performs CIP treatment under high pressure.The pressure of the CIP treatment is 2000 to 4000 atmospheres. After the CIP treatment, one end of the powder-filled rubber tube 20 is cut and the coiled oxide superconducting raw material is taken out. The coiled oxide superconducting raw material is shown in FIG. 5 (an external view of the coiled oxide superconducting raw material).
このようにすることにより、均一な太さの高密度で均質
なクラックの少ないコイル状酸化物超電導原料材を得る
ことができる。By doing so, it is possible to obtain a coiled oxide superconducting raw material with uniform thickness, high density, and homogeneity with few cracks.
この均一な太さの高密度で均質なクラックの少ないコイ
ル状酸化物超電導原料材を、焼結処理法、一方向凝固法
、フローティングゾーン法、レーザ照射法、プラズマ照
射法等の配向性の良い多結晶体形成処理を施すことによ
り、高密度で均質なクラックの少ない配向性の良い多結
晶体からなる酸化物超電導コイルが得られる。This coiled oxide superconducting raw material with uniform thickness, high density, and few cracks can be processed using sintering treatment methods, unidirectional solidification methods, floating zone methods, laser irradiation methods, plasma irradiation methods, etc. with good orientation. By performing the polycrystalline formation treatment, an oxide superconducting coil made of a polycrystalline body with high density, homogeneity, few cracks, and good orientation can be obtained.
前記高密度で均質なクラックの少ない配向性の良い多結
晶体からなる酸化物超電導コイルは、液体窒素の温度の
雰囲気中において超電導現象を示した。The oxide superconducting coil made of the high-density, homogeneous, well-oriented polycrystalline material with few cracks exhibited a superconducting phenomenon in an atmosphere at the temperature of liquid nitrogen.
第７図は、本発明の実施例■の酸化物超電導コイルの作
製方法を説明するための図である。FIG. 7 is a diagram for explaining a method for manufacturing an oxide superconducting coil according to Example 2 of the present invention.
本実施例■の酸化物超電導コイルの作製方法は、例えば
、Ｂｉ２０３（１モル） 、ＰｂＯ（０，２モル）、５
ｒＣＯ３（１モル） 、ＣａＣ０，（１モル）、Ｃｕｏ
（２モル）を混合して、それを８００℃で１２〜２４時
間仮焼する。The method for manufacturing the oxide superconducting coil of Example 3 includes, for example, Bi203 (1 mol), PbO (0.2 mol), 5
rCO3 (1 mol), CaC0, (1 mol), Cuo
(2 mol) and calcined it at 800°C for 12-24 hours.
次に、この仮焼された酸化物超電導原料を粉末にして仮
焼超電導原料粉末を作製する。Next, this calcined oxide superconducting raw material is powdered to produce a calcined superconducting raw material powder.
次に、銅、銀等の低抵抗からなる金属管（パイプ）に前
記仮焼超電導原料粉末を詰め込み、第６図に示すように
、この仮焼超電導粉末詰め込み金属管４０を圧延ローラ
４１により線引して線材４２を形成する。この線材４２
の両端部に、第７図（線材を円筒金具に取り付けた斜視
図）に示すように、スプリング４３を介して固定用フッ
ク４４を設け、第１図に示す円筒金具１２に設けられて
いるゴム管固定穴１１に引掛け、線材４２を円筒金具１
２に張力を加えてコイル状に巻き付け、他の固定用フッ
ク４４を円筒金具１２に設けられているゴム管固定穴１
１に引掛けて線材４２を円筒金具１２に固定する。Next, the calcined superconducting raw material powder is packed into a metal tube (pipe) made of low resistance such as copper or silver, and as shown in FIG. The wire rod 42 is formed by drawing. This wire 42
As shown in FIG. 7 (perspective view of the wire attached to the cylindrical fitting), fixing hooks 44 are provided at both ends of the cylindrical fitting 12 shown in FIG. Hook the wire rod 42 into the tube fixing hole 11 and attach it to the cylindrical fitting 1.
2 is applied tension and wound into a coil shape, and the other fixing hook 44 is attached to the rubber tube fixing hole 1 provided in the cylindrical metal fitting 12.
1 to fix the wire 42 to the cylindrical metal fitting 12.
次に、線材４２が巻き付けられた円筒金具１０を、前記
第４図に示すＣＩＰ装置３０の液体圧シリンダ−３１の
中に入れ、高圧力を発生するＣＩＰ処理を行う。ＣＩＰ
％理の圧力は、２０００から４０００気圧で実施する。Next, the cylindrical metal fitting 10 around which the wire rod 42 is wound is placed into the liquid pressure cylinder 31 of the CIP device 30 shown in FIG. 4, and CIP treatment is performed to generate high pressure. C.I.P.
The pressure of the process is 2,000 to 4,000 atmospheres.
ＣＩＰ処理後、酸素雰囲気中で、８４５’Ｃで１２〜２
４時間アニール処理を行う。After CIP treatment, in oxygen atmosphere at 845'C for 12~2
Annealing is performed for 4 hours.
この時、本発明では、整形時にＣＩＰ処理を行うため、
前記仮焼超電導粉末詰め込み金属管４０の金属管（パイ
プ）と仮焼超電導粉末との間に隙間ができるので、酸化
物超電導体を完全に生成するための酸素の供給を、従来
のＣＩＰ処理を行わないものに比べて良好に行うことが
できる。At this time, in the present invention, since CIP processing is performed at the time of shaping,
Since a gap is created between the metal tube (pipe) of the calcined superconducting powder-filled metal tube 40 and the calcined superconducting powder, the supply of oxygen to completely generate the oxide superconductor cannot be performed using the conventional CIP process. It can be performed better than those that do not.
このように仮焼超電導粉末詰め込み金属管４０にＣＩＰ
処理を施すことにより、酸化物超電導原料線に銅、銀等
の低抵抗金属を被覆した均一な太さの高密度で均質なク
ラックの少ないコイル状酸化物超電導原料材を得ること
ができる。In this way, CIP is applied to the metal tube 40 filled with calcined superconducting powder.
By performing the treatment, it is possible to obtain a coiled oxide superconducting raw material having a uniform thickness, high density, and few cracks, in which the oxide superconducting raw material wire is coated with a low-resistance metal such as copper or silver.
この均一な太さの高密度で均質なクラックの少ないコイ
ル状酸化物超電導原料材を、焼結処理法、一方向凝固法
、フローティングゾーン法、レーザ照射法、プラズマ照
射法等の配向性の良い多結晶体形成処理を施すことによ
り、超電導特性を向上させ、高密度で均質なクラックの
少ない配向性のある多結晶体からなる酸化物超電導体に
、銅、銀等の低抵抗金属を被覆した酸化物超電導コイル
を得ることができる。This coiled oxide superconducting raw material with uniform thickness, high density, and few cracks can be processed using sintering treatment methods, unidirectional solidification methods, floating zone methods, laser irradiation methods, plasma irradiation methods, etc. with good orientation. Polycrystal formation treatment improves superconducting properties, and the oxide superconductor is made of highly dense, homogeneous, and oriented polycrystals with few cracks, coated with low-resistance metals such as copper and silver. An oxide superconducting coil can be obtained.
この高密度で均質なクラックの少ない配向性の良い多結
晶体からなる酸化物超電導体に、銅、銀等の低抵抗金属
を被覆した酸化物超電導コイルは、液体窒素の温度の雰
囲気中において超電導現象を示した。Oxide superconducting coils, which are made of high-density, homogeneous, well-oriented polycrystals with few cracks and coated with low-resistance metals such as copper and silver, conduct superconductivity in an atmosphere at the temperature of liquid nitrogen. showed the phenomenon.
また、前記銅、銀等の低抵抗金属は、超電導特性を安定
にすると共に酸化物超電導コイルの超電導状態が破壊さ
れた時、酸化物超電導コイル及び装置の保護回路として
の役目をすることができる。In addition, the low resistance metals such as copper and silver can stabilize the superconducting properties and serve as a protection circuit for the oxide superconducting coil and the device when the superconducting state of the oxide superconducting coil is destroyed. .
なお、前記実施例Ｉ及び■では、ＣＩＰ処理と熱処理と
を別工程で行う方法で説明したが、本発明は１両者の機
能を持ったホット・アイソスタティク・プレシャー法を
用いて等方圧力処理を行ってもよい。In Examples I and (2) above, the CIP treatment and the heat treatment are performed in separate steps, but the present invention uses a hot isostatic pressure method that has the functions of both. Processing may be performed.
以上、本発明を実施例にもとづき具体的に説明したが、
本発明は、前記実施例に限定されるものではなく、その
要旨を逸脱しない範囲において種々変更可能であること
は言うまでもない。The present invention has been specifically explained above based on examples, but
It goes without saying that the present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the spirit thereof.
以上、説明したように、本発明によれば、均一な太さの
高密度で均質なクラックの少ないコイル状酸化物超電導
原料材を得ることができる。As described above, according to the present invention, a coiled oxide superconducting raw material having a uniform thickness, high density, and homogeneity with few cracks can be obtained.
このコイル状酸化物超電導原料材に、焼結処理法、一方
向凝固法、フローティングゾーン法、レーザ照射法、プ
ラズマ照射法等の配向性の良い多結晶体形成処理を施す
ことにより、高密度で均質なクラックの少ない配向性の
良い多結晶体からなる酸化物超電導コイルが得られる。This coiled oxide superconducting raw material is processed to form a polycrystalline body with good orientation, such as sintering, unidirectional solidification, floating zone, laser irradiation, and plasma irradiation. An oxide superconducting coil made of homogeneous polycrystalline material with few cracks and good orientation can be obtained.
この高密度で均質なりランクの少ない配向性の良い多結
晶体からなる酸化物超電導コイルは、液体窒素の温度の
雰囲気中において超電導現象を示した。This oxide superconducting coil made of a high-density, homogeneous, or poorly oriented polycrystalline material exhibited superconductivity in an atmosphere at the temperature of liquid nitrogen.
また、前記可撓性のある管として網、銀等の低抵抗金属
のうちの一つを用いることにより、超電導特性を安定に
すると共に酸化物超電導コイルの超電導状態が破壊され
た時、酸化物超電導コイル及び装置の保護回路としての
役目をすることができる。In addition, by using one of low resistance metals such as mesh or silver as the flexible tube, the superconducting properties can be stabilized, and when the superconducting state of the oxide superconducting coil is destroyed, the oxide It can serve as a protection circuit for superconducting coils and devices.
第工図乃至第４図は１本発明の実施例Ｉのコイル状超電
導原料材作製方法を実施するための装置の概略構成を示
す図、
第５図は、本実施例Ｉの作製方法で作製されたコイル状
酸化物原料材の外観図、
第６図及び第７図は、本発明の実施例Ｈの酸化物超電導
コイルの作製方法を説明するための図である。
図中、１０・・・ゴム管巻き付は円筒金具、１１・・・
ゴム管固定穴、１２・・・円筒金具、２０・・・超電導
原料粉末入りゴム管、２１・・・固定用針金、２２・・
・粉末綴じ込め用針金、２３・・・ゴム管、３０・・・
ＣＩＰ装置、３１・・・液体圧シリンダ−，４０・・・
仮焼超電導粉末詰め込み金属管、４１・・・圧延ローラ
、４２・・・線材、４３・・・スプリング、４４・・・
固定用フック。1. Figures 1 to 4 are diagrams showing the schematic configuration of an apparatus for carrying out the method for manufacturing a coiled superconducting raw material according to Example I of the present invention. 6 and 7 are diagrams for explaining the method for manufacturing the oxide superconducting coil of Example H of the present invention. In the figure, 10...The rubber tube is wrapped around a cylindrical metal fitting, 11...
Rubber tube fixing hole, 12... Cylindrical fitting, 20... Rubber tube containing superconducting raw material powder, 21... Fixing wire, 22...
・Wire for powder binding, 23...Rubber tube, 30...
CIP device, 31...Liquid pressure cylinder, 40...
Calcined superconducting powder packed metal tube, 41... Rolling roller, 42... Wire rod, 43... Spring, 44...
Fixing hook.
Claims (4)
結晶体からなる酸化物超電導コイル。(1) An oxide superconducting coil made of a high-density, homogeneous polycrystal with few cracks and good orientation.
結晶体からなるコイル状酸化物超電導体に、銅，銀等の
低抵抗金属を被覆した酸化物超電導コイル。(2) An oxide superconducting coil in which a coiled oxide superconductor made of a high-density, homogeneous, well-oriented polycrystalline body with few cracks is coated with a low-resistance metal such as copper or silver.
と、該酸化物超電導原料粉末が充填されている可撓性管
に長さ方向に張力をもたせてコイル状に巻回する工程と
、該酸化物超電導原料粉末が充填されているコイル状可
撓性管に等方圧力処理を施す工程とを備えたことを特徴
とするコイル状超電導原料材作製方法。(3) A process of filling a flexible tube with the oxide superconducting raw material powder, and a process of applying tension in the length direction to the flexible tube filled with the oxide superconducting raw material powder and winding it into a coil shape. and a step of subjecting a coiled flexible tube filled with the oxide superconducting raw material powder to isotropic pressure treatment.
，銀等のうちの一つからなることを特徴とする超電導原
料材作製方法。(4) A method for producing a superconducting raw material, wherein the flexible tube according to claim 3 is made of one of rubber, copper, silver, etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20258989A JP2617227B2 (en) | 1989-08-04 | 1989-08-04 | Method for producing coiled oxide superconducting raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20258989A JP2617227B2 (en) | 1989-08-04 | 1989-08-04 | Method for producing coiled oxide superconducting raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03129705A true JPH03129705A (en) | 1991-06-03 |
| JP2617227B2 JP2617227B2 (en) | 1997-06-04 |
Family
ID=16459987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20258989A Expired - Lifetime JP2617227B2 (en) | 1989-08-04 | 1989-08-04 | Method for producing coiled oxide superconducting raw material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2617227B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03153558A (en) * | 1989-11-08 | 1991-07-01 | Kokusai Chiyoudendou Sangyo Gijutsu Kenkyu Center | Production of oxide superconductor |
-
1989
- 1989-08-04 JP JP20258989A patent/JP2617227B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03153558A (en) * | 1989-11-08 | 1991-07-01 | Kokusai Chiyoudendou Sangyo Gijutsu Kenkyu Center | Production of oxide superconductor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2617227B2 (en) | 1997-06-04 |
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