JPS63319069A - Method for removing impurity from superconductive material - Google Patents
Method for removing impurity from superconductive materialInfo
- Publication number
- JPS63319069A JPS63319069A JP62154867A JP15486787A JPS63319069A JP S63319069 A JPS63319069 A JP S63319069A JP 62154867 A JP62154867 A JP 62154867A JP 15486787 A JP15486787 A JP 15486787A JP S63319069 A JPS63319069 A JP S63319069A
- Authority
- JP
- Japan
- Prior art keywords
- superconductive
- substance
- superconducting
- superconductive material
- cooling medium
- 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
- 239000000463 material Substances 0.000 title claims abstract description 49
- 239000012535 impurity Substances 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 239000002826 coolant Substances 0.000 claims abstract description 9
- 230000005291 magnetic effect Effects 0.000 claims abstract description 9
- 239000001307 helium Substances 0.000 claims abstract description 7
- 229910052734 helium Inorganic materials 0.000 claims abstract description 7
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 10
- 230000004907 flux Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract 7
- 229910020012 Nb—Ti Inorganic materials 0.000 description 2
- 150000001449 anionic compounds Chemical class 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000005292 diamagnetic effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001412 inorganic anion Inorganic materials 0.000 description 2
- YMWLPMGFZYFLRP-UHFFFAOYSA-N 2-(4,5-dimethyl-1,3-diselenol-2-ylidene)-4,5-dimethyl-1,3-diselenole Chemical compound [Se]1C(C)=C(C)[Se]C1=C1[Se]C(C)=C(C)[Se]1 YMWLPMGFZYFLRP-UHFFFAOYSA-N 0.000 description 1
- 229910017048 AsF6 Inorganic materials 0.000 description 1
- 229910020018 Nb Zr Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OSVXSBDYLRYLIG-UHFFFAOYSA-N chlorine dioxide Inorganic materials O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000002603 lanthanum Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/021—Separation using Meissner effect, i.e. deflection of superconductive particles in a magnetic field
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、超電導線などに利用される超電導材料の不純
物除去方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for removing impurities from superconducting materials used in superconducting wires and the like.
（従来技術）
超電導物質には、セラミック系、金属系、有機物系があ
り、これらのほとんどは合成技術によって作られている
。合成技術によるため超電導材料には、不純物すなわち
非超電導材料の含有を斥けることができずそのために、
超電導現象を示す温度（臨界１！度）を下げたり臨界電
流密度、臨界ｍ場の臨界値以上になってしまい工業化へ
のネックとなっている。(Prior Art) Superconducting materials include ceramic, metal, and organic materials, and most of these are made using synthetic technology. Because it is based on synthesis technology, superconducting materials cannot exclude impurities, that is, non-superconducting materials.
The temperature at which superconductivity occurs (critical 1! degree) is lowered, and the critical current density and critical m-field exceed the critical values, creating a bottleneck for industrialization.
（発明が解決しようとする問題点・目的）本発明は、超
電導材料中に含まれる非超電導材料を除去して、超電導
物質の固有の臨界値になったときに超電導状態を生じせ
しめる超電導材料の不純物除去方法である。(Problems and Objectives to be Solved by the Invention) The present invention provides a superconducting material that produces a superconducting state when a critical value unique to the superconducting material is reached by removing non-superconducting materials contained in the superconducting material. This is an impurity removal method.
（問題点を解決するための手段）
本発明は、液体窒素又は液体ヘリウム等の冷却媒体中に
超電導ｖｉ料を入れて、この超電導材料に臨界を与えて
超電導材料中に含まれる非超電導材料を分離し、純粋な
超電導物質を得るものである。(Means for Solving the Problems) The present invention involves placing a superconducting VI material in a cooling medium such as liquid nitrogen or liquid helium, and imparting criticality to the superconducting material to remove non-superconducting materials contained in the superconducting material. It separates and obtains pure superconducting material.
超電導物質は、超電導現象を生じる臨界温度以下におい
ては、臨界をかけると磁束を排斥する性質（反磁性）を
生じ、一方非超電導材料は。Superconducting materials exhibit the property of rejecting magnetic flux (diamagnetism) when critical temperature is applied below the critical temperature at which superconductivity occurs, whereas non-superconducting materials exhibit the property of rejecting magnetic flux (diamagnetism).
反磁性を生じないので本発明においては、この性質を利
用して、超電導材料中の不純物を除去するものである。Since diamagnetism does not occur, this property is utilized in the present invention to remove impurities in the superconducting material.
超電導材料としては、従来知られているイツトリウム系
（イツトリウム−Ｃｕ−Ｂａ−Ｍｉ。The conventionally known superconducting material is yttrium-based (yttrium-Cu-Ba-Mi).
臨界温度９５°Ｋ）、ランタン系（ランタン−ＣＬＪ−
Ｂａ （Ｓｒ）−１素、臨界温度３８ Ｋ）などのセラ
ミック系超電導材料、Ｎｂ−Ｔｉ（臨界温度８〜１０’
Ｋ） 、 、Ｎｂ−Ｔ ｉにタンタル、バナジウム
、ハウニウム等の第３元素を添加したもの、Ｎｂ−Ｚｒ
、Ｎｂ−８ｕ、Ｖ−Ｃａなどの金属系超電導材料、およ
び（ＴＭＴＳＦ）２Ｘ（但しＸはＡｓＦ６ 、ＣｌＯ２
などの無機陰イオン）などの有機物系超電導材料が対蒙
となる。critical temperature 95°K), lanthanum series (lanthanum-CLJ-
Ceramic superconducting materials such as Ba (Sr)-1 (critical temperature 38 K), Nb-Ti (critical temperature 8-10'
K), , Nb-Ti added with a third element such as tantalum, vanadium, haunium, etc., Nb-Zr
, Nb-8u, V-Ca, and (TMTSF)2X (where X is AsF6, ClO2
Organic superconducting materials such as inorganic anions (such as inorganic anions) are suitable.
超電導材料は、粉体状であり、これを多孔構造又は細か
い網目状の容器に入れ、この容器を冷ｆｉＩｔｉ１体例
えば、液体窒素の温度−１９７℃のタンクに入れる。つ
いで、このタンクの中または外側から容器中の超電導材
料に対して磁界をかける。この状態においては、超電導
物質は超電導状態になると共に磁束に対して反磁性を生
じて容器の上方へ浮いて行き、一方非超電導材料は、冷
却媒体例えば液体窒素の比重が０．８であるから、容器
の底へ沈んでいき、超電導物質と非超電導材料とが分離
した状態となる。ついで容器の底を開いて、非超電導材
料を除去づることによって超電導物質を単離することが
できる。The superconducting material is in the form of a powder, and is placed in a porous or fine mesh container, and this container is placed in a cold tank, for example, at a temperature of liquid nitrogen of -197°C. Then, a magnetic field is applied to the superconducting material in the container from inside or outside the tank. In this state, the superconducting material becomes superconducting and becomes diamagnetic with respect to the magnetic flux, floating upwards in the container, while the non-superconducting material becomes superconducting because the specific gravity of the cooling medium, such as liquid nitrogen, is 0.8. , it sinks to the bottom of the container, and the superconducting material and non-superconducting material become separated. The superconducting material can then be isolated by opening the bottom of the container and removing the non-superconducting material.
本発明においては、超電導物質は、その物質固有の臨界
温度をもっており、その目的とする超電導物質によって
、液体窒素、液体ヘリウム等の冷却媒体を選択する。In the present invention, a superconducting material has its own critical temperature, and a cooling medium such as liquid nitrogen or liquid helium is selected depending on the intended superconducting material.
（発明の効果）
液体窒素又は液体ヘリウム等の冷却媒体の中に超電導材
料を入れて、磁界を与え、超電導物質の反磁性を利用し
て、超電導材料から非超電導材料を分離づるものである
から純粋な超電物質が単離することができる。(Effect of the invention) This is because a superconducting material is placed in a cooling medium such as liquid nitrogen or liquid helium, a magnetic field is applied, and non-superconducting materials are separated from superconducting materials by utilizing the diamagnetic properties of the superconducting material. Pure superelectric materials can be isolated.
従って、超電導物質の固有の臨界温度で超電導現象を生
じることができると共に、超電導線における安定化材と
の複合が容易になり２勺法を小さくづることも可能であ
る。Therefore, a superconducting phenomenon can occur at the specific critical temperature of the superconducting material, and it is also easy to combine with a stabilizing material in a superconducting wire, making it possible to reduce the size of the two-layer method.
Claims (1)
導材料に磁界を与えて超電導材料中に含まれる非超電導
材料を分離することを特徴とする超電導材料の不純物除
去方法A method for removing impurities from a superconducting material, which comprises applying a magnetic field to a superconducting material placed in a cooling medium such as liquid nitrogen or liquid helium to separate non-superconducting materials contained in the superconducting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62154867A JPS63319069A (en) | 1987-06-22 | 1987-06-22 | Method for removing impurity from superconductive material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62154867A JPS63319069A (en) | 1987-06-22 | 1987-06-22 | Method for removing impurity from superconductive material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63319069A true JPS63319069A (en) | 1988-12-27 |
Family
ID=15593654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62154867A Pending JPS63319069A (en) | 1987-06-22 | 1987-06-22 | Method for removing impurity from superconductive material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63319069A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6430659A (en) * | 1987-07-24 | 1989-02-01 | Sumitomo Heavy Industries | Screening method for superconductive material |
| US5049540A (en) * | 1987-11-05 | 1991-09-17 | Idaho Research Foundation | Method and means for separating and classifying superconductive particles |
-
1987
- 1987-06-22 JP JP62154867A patent/JPS63319069A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6430659A (en) * | 1987-07-24 | 1989-02-01 | Sumitomo Heavy Industries | Screening method for superconductive material |
| JPH0312940B2 (en) * | 1987-07-24 | 1991-02-21 | Sumitomo Heavy Industries | |
| US5049540A (en) * | 1987-11-05 | 1991-09-17 | Idaho Research Foundation | Method and means for separating and classifying superconductive particles |
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