JPS63282153A - Production of superconducting ceramic - Google Patents
Production of superconducting ceramicInfo
- Publication number
- JPS63282153A JPS63282153A JP62114644A JP11464487A JPS63282153A JP S63282153 A JPS63282153 A JP S63282153A JP 62114644 A JP62114644 A JP 62114644A JP 11464487 A JP11464487 A JP 11464487A JP S63282153 A JPS63282153 A JP S63282153A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- superconducting
- superconducting ceramic
- ceramics
- applying
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 230000005291 magnetic effect Effects 0.000 claims abstract description 20
- 239000013078 crystal Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 abstract description 5
- 229910052788 barium Inorganic materials 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 229910052727 yttrium Inorganic materials 0.000 abstract description 3
- 229910052746 lanthanum Inorganic materials 0.000 abstract description 2
- 239000002887 superconductor Substances 0.000 abstract 2
- 238000000748 compression moulding Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 230000005415 magnetization 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
- 239000000203 mixture Substances 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- HYXGAEYDKFCVMU-UHFFFAOYSA-N scandium oxide Chemical compound O=[Sc]O[Sc]=O HYXGAEYDKFCVMU-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/01—Manufacture or treatment
- H10N60/0268—Manufacture or treatment of devices comprising copper oxide
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電機および電子機器に利用する導体および機能
素子の板材、基板材、線材。発電機、モータ、送電ケー
ブル、エネルギー貯蔵機、核融合装置、磁気浮上列車、
船舶推進、ＭＲＩ、π中間子治療装置、ジｌセフソン素
子、超伝導トランジスタ等に関係する超電導セラミック
スに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to plate materials, substrate materials, and wire materials for conductors and functional elements used in electrical and electronic equipment. Generators, motors, power transmission cables, energy storage devices, nuclear fusion devices, magnetic levitation trains,
The present invention relates to superconducting ceramics related to ship propulsion, MRI, pi-meson therapy equipment, Giraffeson devices, superconducting transistors, etc.
超伝導セラミックスは８００〜１０００°Ｃで成形した
ものを焼結する。この場合、大気中で行なう（日経新聞
３月１９日）、加圧して行なう（日刊工業新聞４月３日
）、スパッタリングして行う（朝日新聞４月７日）など
がある。これら、いずれの手法を用いても１００Ａ／ｃ
ｍ”が限度であり、これ以上の電流密度を得るには別の
手法が要る０
〔発明が解決しようとする問題点〕
現在の超伝導セラミックスは組成比に重点が置かれて作
られている。緻密化には加圧が用いられるに過ぎない。Superconducting ceramics are molded and sintered at 800 to 1000°C. In this case, it may be carried out in the atmosphere (Nikkei Shimbun, March 19), under pressure (Nikkan Kogyo Shimbun, April 3), or by sputtering (Asahi Shimbun, April 7). 100A/c using any of these methods
m" is the limit, and to obtain a current density higher than this, another method is required. [Problem to be solved by the invention] Current superconducting ceramics are made with emphasis on the composition ratio. Only pressurization is used for densification.
このため、作られた超伝導セラミックス内で超伝導を生
ずると見られる結晶の配列は必ずしも一様ではない。こ
れらの結晶は超伝導セラミックス内を曲りくねった紐状
をしており、セラミックスに占める割合は少ない。For this reason, the arrangement of the crystals that appear to produce superconductivity within the produced superconducting ceramics is not necessarily uniform. These crystals form a winding string inside the superconducting ceramic, and their proportion in the ceramic is small.
現在、研究・開発中の超伝導セラミックスの電流密度が
予想外に小さいのはこのためで、Ｂａ −Ｙ −Ｃｕ
セラミックスで１００ Ａ／ ｃｍ２に過ぎない。超伝
導セラミックスを実用化するには、少なくともこの値を
１桁上げるこさが問題となっている０
本発明の目的は、超伝導を生じさせる結晶を配列良く、
セラミックス内に成長させて、電流密度を現状の１桁以
上向上させることにある。This is why the current density of superconducting ceramics currently under research and development is unexpectedly low.
Ceramics have only 100 A/cm2. In order to put superconducting ceramics into practical use, it is necessary to increase this value by at least one order of magnitude.
The goal is to grow it inside ceramics and increase the current density by more than an order of magnitude.
上記目的を達成するために、超伝導セラミックスの製造
時の任意工程にセラミックス内原子または結晶の配向を
目的に外部から磁界を加える。磁界は均一なものか原子
レベルでの繰返しパターンを持ったものである。In order to achieve the above object, an external magnetic field is applied to any step during the production of superconducting ceramics for the purpose of orienting atoms or crystals within the ceramics. The magnetic field can be uniform or have a repeating pattern at the atomic level.
この磁界により、超伝導セラミックスに使用する原料に
含まれる磁化容易元素あるいは結晶を形成するための微
細な種結晶の配列ならびに配向を制御する。磁界の加え
方は、材料によって異なるが、試料が溶けている場合の
初期、焼結時に焼結が進む状態に応じて断続的に加える
ほか、粉末混合の状態から焼結終了までの全時間のいず
れかであり、磁界は連続または断続のいずれでも良い。This magnetic field controls the arrangement and orientation of easily magnetized elements contained in raw materials used in superconducting ceramics or minute seed crystals for forming crystals. The method of applying the magnetic field varies depending on the material, but it can be applied initially when the sample is molten, intermittently applied during sintering depending on the progress of sintering, and during the entire time from the powder mixing state to the end of sintering. The magnetic field may be either continuous or intermittent.
超伝導セラミックスの粉末混合状態、溶液状態から焼結
完了までのすべての工程丈だはいずれか一部に磁界を上
記目的にオリ用することが含まれる。The entire process of superconducting ceramics, from the powder mixing state to the solution state to the completion of sintering, includes the use of a magnetic field for the above purpose.
また、スパッタ法を利用する場合とか、磁化容易な異種
結晶をまず磁界により配向させ、その上に超伝導セラミ
ックスを育成することも含む０磁界の加え方は、初期の
み、連続パルス的、パルス的、あるいは一定または変化
させる方法が含まれる。In addition, when using the sputtering method, the method of applying a zero magnetic field, which includes first aligning easily magnetized heterogeneous crystals with a magnetic field and growing superconducting ceramics on top of that, is limited to the application of a zero magnetic field only in the initial stage, in continuous pulses, or in pulsed , or a method of keeping it constant or changing it.
例工ばバリウム・イツトリウム・銅の酸化物セラミック
スで、焼結前の粉末混合状態に金属メツシュにより周期
的な磁化パターンを作り、一部のバリウムなど常磁性物
質を一定の周期で配列させ、焼結時のセラミックスの原
子配列にある規制を与える。これにより、結晶生成の方
向配列を決めて高電流密度の物質を作る。この場合、超
伝導セラミックスを構成する原子以外の磁化容易原子を
混入して、上記と同様の結果を得ることができる。For example, with barium, yttrium, and copper oxide ceramics, a periodic magnetization pattern is created using a metal mesh in the mixed powder state before sintering, and some paramagnetic substances such as barium are arranged at a certain period. Gives certain regulations to the atomic arrangement of ceramics during bonding. This determines the direction of crystal formation and creates a material with high current density. In this case, the same results as above can be obtained by mixing easily magnetizable atoms other than atoms constituting the superconducting ceramic.
同様、製造工程中に磁界を加えることにより結晶の方向
を定めることもできる。Similarly, crystal orientation can be determined by applying a magnetic field during the manufacturing process.
薄膜超伝導セラミックスあるいは線材、板状でも同様、
製造工程のいずれかの個所あるいは繰返し磁界を加える
ことにより同様な結果が得られる。The same applies to thin film superconducting ceramics, wire rods, and plate shapes.
Similar results can be obtained by applying a magnetic field elsewhere in the manufacturing process or repeatedly.
以下、本発明の一実施例を第１図により説明する。超伝
導セラミックスの原料、イツトリウム、ランタン、バリ
ウム、酸化鋼、スカンジ為つムなどを混合して、圧縮成
形する場合に外部より磁場を繰返し、または一時に加え
て粉末の方向を整える。あるいは、プレスの台に第２図
のように結晶パターンに似た磁気パターンを用意すると
、この効果は増加する。An embodiment of the present invention will be described below with reference to FIG. When the raw materials for superconducting ceramics, such as yttrium, lanthanum, barium, oxidized steel, and scandium oxide, are mixed and compression molded, an external magnetic field is applied repeatedly or at once to adjust the direction of the powder. Alternatively, if a magnetic pattern similar to a crystal pattern is provided on the press table as shown in FIG. 2, this effect will be increased.
これにより、磁化容易原子の配列はある程度規制される
ことになり、揃った超伝導結晶を用いた超伝導セラミッ
クスの焼結を可能にする０〔発明の効果〕
本発明により大きな電流密度が得られる０As a result, the arrangement of easily magnetized atoms is regulated to some extent, making it possible to sinter superconducting ceramics using aligned superconducting crystals.0 [Effects of the Invention] The present invention allows a large current density to be obtained. 0
第１図、第２図は本発明を説明するための図である０
１・・・磁気コイノベ ２・・・プレス棒、３・・・セ
ラミックス粉末、４・・・プレス、第７個1 and 2 are diagrams for explaining the present invention.0 1... Magnetic Koinobe 2... Press rod, 3... Ceramic powder, 4... Press, 7th item
Claims (1)
列・配向を定めるために磁界を加えることを特徴とする
超伝導セラミックスの製法。1. A method for producing superconducting ceramics characterized by applying a magnetic field to determine the arrangement and orientation of superconducting crystals during production of superconducting ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62114644A JPS63282153A (en) | 1987-05-13 | 1987-05-13 | Production of superconducting ceramic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62114644A JPS63282153A (en) | 1987-05-13 | 1987-05-13 | Production of superconducting ceramic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63282153A true JPS63282153A (en) | 1988-11-18 |
Family
ID=14642961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62114644A Pending JPS63282153A (en) | 1987-05-13 | 1987-05-13 | Production of superconducting ceramic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63282153A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6456357A (en) * | 1987-08-26 | 1989-03-03 | Semiconductor Energy Lab | Production of superconductive material |
| JPS6459973A (en) * | 1987-08-31 | 1989-03-07 | Semiconductor Energy Lab | Manufacture of superconducting material |
-
1987
- 1987-05-13 JP JP62114644A patent/JPS63282153A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6456357A (en) * | 1987-08-26 | 1989-03-03 | Semiconductor Energy Lab | Production of superconductive material |
| JPS6459973A (en) * | 1987-08-31 | 1989-03-07 | Semiconductor Energy Lab | Manufacture of superconducting material |
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