JPS63267508A - Manufacture of superconductor of oxide - Google Patents
Manufacture of superconductor of oxideInfo
- Publication number
- JPS63267508A JPS63267508A JP62102238A JP10223887A JPS63267508A JP S63267508 A JPS63267508 A JP S63267508A JP 62102238 A JP62102238 A JP 62102238A JP 10223887 A JP10223887 A JP 10223887A JP S63267508 A JPS63267508 A JP S63267508A
- Authority
- JP
- Japan
- Prior art keywords
- oxide
- sheet
- superconductor
- organic binder
- sintered body
- 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
- 239000002887 superconductor Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000011230 binding agent Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 239000004014 plasticizer Substances 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 8
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims abstract description 6
- 229920002689 polyvinyl acetate Polymers 0.000 claims abstract description 6
- 239000011118 polyvinyl acetate Substances 0.000 claims abstract description 6
- 239000002904 solvent Substances 0.000 claims abstract description 4
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 4
- 229910052775 Thulium Inorganic materials 0.000 claims abstract description 3
- 229910052769 Ytterbium Inorganic materials 0.000 claims abstract description 3
- 229910052692 Dysprosium Inorganic materials 0.000 claims abstract 2
- 229910052691 Erbium Inorganic materials 0.000 claims abstract 2
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract 2
- 229910052689 Holmium Inorganic materials 0.000 claims abstract 2
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract 2
- 150000002910 rare earth metals Chemical class 0.000 claims abstract 2
- 229910052706 scandium Inorganic materials 0.000 claims abstract 2
- 229910003808 Sr-Cu Inorganic materials 0.000 claims 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000004898 kneading Methods 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 8
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 8
- 238000002441 X-ray diffraction Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 238000009529 body temperature measurement Methods 0.000 description 6
- 239000001307 helium Substances 0.000 description 6
- 229910052734 helium Inorganic materials 0.000 description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 6
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 6
- 239000005751 Copper oxide Substances 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910000431 copper oxide Inorganic materials 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052788 barium Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052574 oxide ceramic Inorganic materials 0.000 description 2
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 2
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Chemical compound [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- LBJNMUFDOHXDFG-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu].[Cu] LBJNMUFDOHXDFG-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- UFQXGXDIJMBKTC-UHFFFAOYSA-N oxostrontium Chemical compound [Sr]=O UFQXGXDIJMBKTC-UHFFFAOYSA-N 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- HYXGAEYDKFCVMU-UHFFFAOYSA-N scandium oxide Chemical compound O=[Sc]O[Sc]=O HYXGAEYDKFCVMU-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
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Producing Shaped Articles From Materials (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はシート状の酸化物超電導体の製造方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for producing a sheet-like oxide superconductor.
従来の技術
超電導体は電気抵抗がＯであり、送電線、電磁石などに
応用すると極めて有用である。その場合に、超電導体を
薄い薄板状に加工できると応用範囲が極めて広がる。従
来の板状超電導体の製造方法として、Ｎｂ系の金属超電
導材料に熱と圧力を加えて、引き伸す製造方法がしられ
ている。Conventional technology Superconductors have an electrical resistance of O, and are extremely useful when applied to power transmission lines, electromagnets, etc. In this case, if the superconductor can be processed into a thin sheet, the range of applications will be greatly expanded. As a conventional method for manufacturing a plate-shaped superconductor, a manufacturing method is known in which Nb-based metal superconducting material is stretched by applying heat and pressure.
発明が解決しようとする問題点
この方法は、金属系の超電導材料には適用しやすいが、
酸化物セラミックス系材料には、酸化物セラミックス系
材料がもろいため適用困難であった。Problems to be solved by the invention Although this method is easy to apply to metallic superconducting materials,
It has been difficult to apply this method to oxide ceramic materials because oxide ceramic materials are brittle.
本発明はかかる点に鑑みなされたもので、数１０μｍか
ら数１００μｍの任意の形状のシート状酸化物超電導体
を、きわめて容易に形成できる酸化物超電導体の製造方
法を提供することを目的としている。The present invention was made in view of the above, and an object of the present invention is to provide a method for manufacturing an oxide superconductor that can extremely easily form a sheet-like oxide superconductor having an arbitrary shape of several tens of micrometers to several hundreds of micrometers. .
問題点を解決するための手段
本発明は上記問題点を解決するため、層状ペロブスカイ
ト構造超電導体酸化物用原料に、有機結合剤として、ポ
リ酢酸ビニール、もしくはポリビニールブチラールのい
ずれか、またはこれら両者を、０．７〜１５重量％と、
可塑剤を加え、これらを溶媒と共に混練して泥漿とし、
前記泥漿をシート状に一定厚みに形成して乾燥させて生
シートをつくり、この生シートを所定の形状に加工し、
焼成することによって、シート状酸化物超電導体を得る
という生産性に優れたシート状酸化物超電導体の製造方
法を提供するものである。Means for Solving the Problems In order to solve the above problems, the present invention uses polyvinyl acetate or polyvinyl butyral, or both, as an organic binder in the raw material for the layered perovskite structure superconductor oxide. , 0.7 to 15% by weight,
Add a plasticizer and knead these with a solvent to make a slurry,
Form the slurry into a sheet with a certain thickness and dry it to make a green sheet, process this green sheet into a predetermined shape,
The present invention provides a method for producing a sheet-like oxide superconductor with excellent productivity, in which the sheet-like oxide superconductor is obtained by firing.
作用
本発明は、前記した製造方法により、任意の形状のシー
ト状酸化物超電導体を形成することができる
実施例
（実施例１）
酸化インドリウム（Ｙ！ （ｈ、 ） 、酸化バリウム
（Ｂ ａ Ｏ）と酸化銅（Ｃｕｂ）を、Ｙ、、４Ｂａ、
、。Function The present invention provides an embodiment (Example 1) in which a sheet-like oxide superconductor of any shape can be formed by the above-described manufacturing method. O) and copper oxide (Cub), Y, 4Ba,
,.
Ｃｕ、の比で含むようそれぞれ秤量し、混合の後、９０
０℃の空気中で５時間焼成した。これをもう一度粉砕、
混合した後、９００℃の空気中で１２時間焼成し、再度
粉砕した。Weigh each to contain Cu, and after mixing, 90
It was baked in air at 0°C for 5 hours. Grind this again,
After mixing, the mixture was fired in air at 900°C for 12 hours and ground again.
次に、この原料に、ポリ酢酸ビニール（ＰＶＡＣ）とポ
リビニールブチラール（ＰＶＢ）とのうちの一種以上を
結合剤として、０．７〜１５重量％、可塑剤としてフタ
ル酸ジオクチルを０．５重量％をそれぞれ加え、これに
セラミック原料に対して６０重量％のメチルアルコール
で攪拌混合し、さらにボールミルにて２４時間混合して
泥漿（スリップ）を作った。このスリップをポリエステ
ルフィルム上に、ドクターブレード法にてシーを状に成
型し、自然乾燥して生シートを作った。この時その厚み
を２００μｍとした。この生シートをｌＸＩＱｃｍの矩
形金型で打ち抜き、空気中で樹脂除去を十分施してから
９５０℃で５時間焼成した。室温に冷却後、９５０℃の
空気中で１０時間熱処理を行った。冷却後、得られたシ
ート状焼結体の電気抵抗を液体窒素（７７Ｋ ）温度で
測定した結果、いずれも超電導性を示した。すなわちこ
のような方法で形成したシート状焼結体は、超電導体で
あった。得られたシート状焼結体を、Ｘ線解析で調べた
ところ、層状ペロブスカイト構造を示していた。Next, to this raw material, 0.7 to 15% by weight of one or more of polyvinyl acetate (PVAC) and polyvinyl butyral (PVB) as a binder, and 0.5% by weight of dioctyl phthalate as a plasticizer. % of the ceramic raw material was added to the mixture, and 60% by weight of methyl alcohol based on the ceramic raw material was stirred and mixed, and further mixed for 24 hours in a ball mill to form a slip. This slip was formed into a sheet on a polyester film using a doctor blade method, and air-dried to produce a green sheet. At this time, the thickness was set to 200 μm. This green sheet was punched out using a rectangular mold of 1XIQcm, and after sufficiently removing the resin in air, it was fired at 950°C for 5 hours. After cooling to room temperature, heat treatment was performed in air at 950° C. for 10 hours. After cooling, the electrical resistance of the obtained sheet-like sintered bodies was measured at liquid nitrogen (77K) temperature, and as a result, all showed superconductivity. That is, the sheet-like sintered body formed by such a method was a superconductor. When the obtained sheet-like sintered body was examined by X-ray analysis, it showed a layered perovskite structure.
図は、層状ペロブスカイト構造の基本構成要素であるペ
ロブスカイト構造を示したもので、図において、１はＣ
ｕ −、２は０，３はＹまたはＢａである。本実施例の
層状ペロブスカイト構造は、この構成要素がある周期を
もって、層状に積み重なったものである。The figure shows the perovskite structure, which is the basic component of the layered perovskite structure. In the figure, 1 is C
u −, 2 is 0, 3 is Y or Ba. In the layered perovskite structure of this example, these constituent elements are stacked in layers at a certain period.
有機結合剤の量を変えると、焼結体の密度が変化した。Varying the amount of organic binder changed the density of the sintered body.
０．７重量％以下および１５重量％以上の有機結合剤を
加えた場合、焼結体密度はその最大値の９０％以下に低
下し、非常にもろくなり、破損しやすくシート状焼結体
として好ましいものではなかった。したがって有機結合
剤の有効な添加量は０．７〜１５重量％であった。
−
（実施例２）
酸化ランタン（ｔ、ａ、Ｏ，） 、酸化バリウム（Ｂ
ａ Ｏ）と酸化銅（Ｃｕ Ｏ）を、Ｌａ＋、＠４Ｂａｏ
、＋ｈＣｕ Ｉの比で含むようそれぞれ秤量し、混合の
後、実施例１と同様にして、セラミックス原料を作成し
た。When less than 0.7% by weight and more than 15% by weight of an organic binder is added, the density of the sintered body decreases to less than 90% of its maximum value, making it extremely brittle and easily damaged as a sheet-like sintered body. It wasn't a good thing. Therefore, the effective amount of organic binder added was 0.7 to 15% by weight.
- (Example 2) Lanthanum oxide (t, a, O,), barium oxide (B
aO) and copper oxide (CuO), La+, @4Bao
, +hCu I, and after mixing, a ceramic raw material was prepared in the same manner as in Example 1.
次に、この原料に、やはり実施例１と同様に、有機結合
剤および可塑剤を加え、実施例１と同様のプロセスを経
て、シート状焼結体を作成した。Next, an organic binder and a plasticizer were added to this raw material in the same manner as in Example 1, and a sheet-like sintered body was created through the same process as in Example 1.
得られたシート状焼結体の電気抵抗を液体ヘリウム（４
Ｋ）温度で測定した結果、いずれも超電導性を示した。The electrical resistance of the obtained sheet-like sintered body was measured using liquid helium (4
K) As a result of temperature measurements, all showed superconductivity.
すなわちこのような方法で形成したシート状焼結体は、
超電導体であった。得られたシート状焼結体を、Ｘ線解
析で調べたところ、層状ペロブスカイト構造を示してい
た。In other words, the sheet-like sintered body formed by this method is
It was a superconductor. When the obtained sheet-like sintered body was examined by X-ray analysis, it showed a layered perovskite structure.
有機結合剤の量を変えた場合の効果は、やはり実施例１
の場合と同様であり、有機結合剤の有効な添加量は０．
７〜１５重景％重量った。The effect of changing the amount of organic binder can be seen in Example 1.
The effective amount of organic binder added is 0.
The weight was 7-15%.
（実施例３）
酸化ランタン（ＬａｚＯ＊）、酸化カルシウム（Ｃａ２
０＋）と酸化銅（Ｃｕ Ｏ）を、Ｌａ１．１）４Ｃａ、
１６Ｃｕ、の比で含むようそれぞれ秤量し、混合の後、
実施例１と同様にして、セラミックス原料を作成した。(Example 3) Lanthanum oxide (LazO*), calcium oxide (Ca2
0+) and copper oxide (CuO), La1.1)4Ca,
16Cu, and after mixing,
A ceramic raw material was prepared in the same manner as in Example 1.
次に、この原料に、やはり実施例１と同様に、有機結合
剤および可塑剤を加え、実施例工と同様のプロセスを経
て、シート状焼結体を作成した。Next, an organic binder and a plasticizer were added to this raw material in the same manner as in Example 1, and a sheet-like sintered body was produced through the same process as in the example.
得られたシート状焼結体の電気抵抗を液体ヘリウム（４
Ｋ）温度で測定した結果、いずれも超電導性を示した。The electrical resistance of the obtained sheet-like sintered body was measured using liquid helium (4
K) As a result of temperature measurements, all showed superconductivity.
すなわちこのような方法で形成したシート状焼結体は、
超電導体であった。得られたシート状焼結体を、Ｘ線解
析で調べたところ、層状ペロブスカイト構造を示してい
た。In other words, the sheet-like sintered body formed by this method is
It was a superconductor. When the obtained sheet-like sintered body was examined by X-ray analysis, it showed a layered perovskite structure.
有機結合剤の量を変えた場合の効果は、やはり実施例１
の場合と同様であり、有機結合剤の有効な添加量は０．
７〜１５重量％であった。The effect of changing the amount of organic binder can be seen in Example 1.
The effective amount of organic binder added is 0.
It was 7 to 15% by weight.
（実施例４）
酸化ランタン（Ｌａｇ Ｏｘ ） 、酸化ストロンチウ
ム（Ｓ ｒ Ｏ）と酸化銅（Ｃｕ Ｏ）を、Ｌａ１．１
ＪＳｒｏ、＋ｂＣｕ、の比で含むようそれぞれ秤量し、
混合の後、実施例１と同様にして、セラミックス原料を
作成した。(Example 4) Lanthanum oxide (LagOx), strontium oxide (SrO) and copper oxide (CuO) were mixed with La1.1
JSro, +bCu, each weighed to contain in the ratio,
After mixing, a ceramic raw material was prepared in the same manner as in Example 1.
次に、この原料に、やはり実施例１と同様に、有機結合
剤および可塑剤を加え、実施例１と同様のプロセスを経
て、シート状焼結体を作成した。Next, an organic binder and a plasticizer were added to this raw material in the same manner as in Example 1, and a sheet-like sintered body was created through the same process as in Example 1.
得られたシート状焼結体の電気抵抗を液体ヘリウム（４
Ｋ）温度で測定した結果、いずれも超電導性を示した。The electrical resistance of the obtained sheet-like sintered body was measured using liquid helium (4
K) As a result of temperature measurements, all showed superconductivity.
すなわちこのような方法で形成したシート状焼結体は、
超電導体であった。得られたシート状焼結体を、Ｘ線解
析で調べたところ、層状ペロブスカイト構造を示してい
た。In other words, the sheet-like sintered body formed by this method is
It was a superconductor. When the obtained sheet-like sintered body was examined by X-ray analysis, it showed a layered perovskite structure.
有機結合剤の量を変えた場合の効果は、やはり実施例１
の場合と同様であり、有機結合剤の有効な添加量は０．
７〜１５重量％であった。The effect of changing the amount of organic binder can be seen in Example 1.
The effective amount of organic binder added is 0.
It was 7 to 15% by weight.
（実施例５）
酸化イツトリウム（Ｙｚ ０３ ） 、酸化スカンジウ
ム（３Ｃ１０２） 、酸化バリウム（Ｂ ａ Ｏ）と酸
化銅（Ｃｕ Ｏ）を、（ＹＳ Ｃ”） ０．４ Ｂ ａ
Ｏ，６Ｃｕ、の比で含むようそれぞれ秤量し、混合の後
、実施例１と同様にして、セラミックス原料を作成した
。(Example 5) Yttrium oxide (Yz 03 ), scandium oxide (3C102), barium oxide (Ba O) and copper oxide (Cu 2 O), (YS C") 0.4 Ba
After weighing and mixing, a ceramic raw material was prepared in the same manner as in Example 1.
次に、この原料に、やはり実施例１と同様に、有機結合
剤および可塑剤を加え、実施例１と同様のプロセスを経
て、シート状焼結体を作成した。Next, an organic binder and a plasticizer were added to this raw material in the same manner as in Example 1, and a sheet-like sintered body was created through the same process as in Example 1.
得られたシート状焼結体の電気抵抗を液体ヘリウム（４
Ｋ）温度で測定した結果、いずれも超電導性を示した。The electrical resistance of the obtained sheet-like sintered body was measured using liquid helium (4
K) As a result of temperature measurements, all showed superconductivity.
すなわちこのような方法で形成したシート状焼結体は、
超電導体であった。得られたシート状焼結体を、Ｘ線解
析で調べたところ、層状ペロブスカイト構造を示してい
た。In other words, the sheet-like sintered body formed by this method is
It was a superconductor. When the obtained sheet-like sintered body was examined by X-ray analysis, it showed a layered perovskite structure.
有機結合剤の量を変えた場合の効果は、やはり実施例１
の場合と同様であり、有機結合剤の有効な添加量は０．
７〜１５重量％であった。The effect of changing the amount of organic binder can be seen in Example 1.
The effective amount of organic binder added is 0.
It was 7 to 15% by weight.
（実施例６）
希土類酸化物（Ｙｂ、Ｔｍ、Ｅｒｓ ＨＯ％ Ｄｙ、Ｇ
ｄの酸化物）、酸化バリウム（Ｂ ａ Ｏ）と酸化銅（
Ｃｕｂ）を、希土類酸化物と酸化物バリウムを酸化銅１
に対して、０．３および０．７になるよう種々秤量し、
混合の後、実施例１と同様にして、セラミックス原料を
作成した。(Example 6) Rare earth oxide (Yb, Tm, Ers HO% Dy, G
d oxide), barium oxide (B a O) and copper oxide (
Cub), rare earth oxide and barium oxide, copper oxide 1
Weighed variously so that it was 0.3 and 0.7,
After mixing, a ceramic raw material was prepared in the same manner as in Example 1.
次に、この原料に、やはり実施例１と同様に、有機結合
剤および可塑剤を加え、実施例１と同様のプロセスを経
て、シート状焼結体を作成した。Next, an organic binder and a plasticizer were added to this raw material in the same manner as in Example 1, and a sheet-like sintered body was created through the same process as in Example 1.
得られたシート状焼結体の電気抵抗を液体ヘリウム（４
Ｋ）温度で測定した結果、いずれも超電導性を示した。The electrical resistance of the obtained sheet-like sintered body was measured using liquid helium (4
K) As a result of temperature measurements, all showed superconductivity.
すなわちこのような方法で形成したシート状焼結体は、
超電導体であった。得られたシート状焼結体を、Ｘ線解
析で調べたところ、層状ペロブスカイト構造を示してい
た。In other words, the sheet-like sintered body formed by this method is
It was a superconductor. When the obtained sheet-like sintered body was examined by X-ray analysis, it showed a layered perovskite structure.
有機結合剤の量を変えた場合の効果は、やはり実施例１
の場合と同様であり、有機結合剤の有効な添加量は０．
７〜１５重量％であった。The effect of changing the amount of organic binder can be seen in Example 1.
The effective amount of organic binder added is 0.
It was 7 to 15% by weight.
（実施例７）
酸化イツトリウム（Ｙｚ ０３ ） 、酸化ストロンチ
ウム（Ｓ ｒ Ｏ）と酸化銅（Ｃｕｂ）を、Ｙｏ、４Ｓ
ｒｏ、、、ＣｕＯ比で含むようそれぞれ秤量し、混合の
後、実施例１と同様にして、セラミックス原料を作成し
た。(Example 7) Yttrium oxide (Yz 03 ), strontium oxide (S r O) and copper oxide (Cub) were mixed with Yo, 4S
After weighing and mixing, a ceramic raw material was prepared in the same manner as in Example 1.
次に、この原料に、やはり実施例１と同様に、有機結合
剤および可塑剤を加え、実施例１と同様のプロセスを経
て、シート状焼結体を作成した。Next, an organic binder and a plasticizer were added to this raw material in the same manner as in Example 1, and a sheet-like sintered body was created through the same process as in Example 1.
得られたシート状焼結体の電気抵抗を液体ヘリウム（４
Ｋ）温度で測定した結果、いずれも超電導性を示した。The electrical resistance of the obtained sheet-like sintered body was measured using liquid helium (4
K) As a result of temperature measurements, all showed superconductivity.
すなわちこのような方法で形成したシート状焼結体は、
超電導体であった。得られたシート状焼結体を、Ｘ線解
析で調べたところ、層状ペロブスカイト構造を示してい
た。In other words, the sheet-like sintered body formed by this method is
It was a superconductor. When the obtained sheet-like sintered body was examined by X-ray analysis, it showed a layered perovskite structure.
有機結合剤の量を変えた場合の効果は、やはり実施例１
と同様であり、有機結合剤の有効な添加量は０．７〜１
５重量％であった。The effect of changing the amount of organic binder can be seen in Example 1.
The effective addition amount of the organic binder is 0.7 to 1
It was 5% by weight.
発明の効果
以上述べた如く、本発明の方法によれば、任意の形状の
シート状焼結体酸化物超電４体を形成することができる
。Effects of the Invention As described above, according to the method of the present invention, four sheet-like sintered oxide superelectric bodies having an arbitrary shape can be formed.
本実施例の製造方法は、前記実施例から分るように、層
状ペロブスカイト構造を有する酸化物超電導体について
は、いずれの材料についても適用できるものである。第
１図では、実施例１の場合の構造について、示したが、
実施例２〜７の場合は、この構造において、Ｙ ％ Ｂ
ａの代りに、それぞれの実施例で用いたＣｕ、０以外
の元素におきかえたものである。As can be seen from the above examples, the manufacturing method of this example can be applied to any material for an oxide superconductor having a layered perovskite structure. Although FIG. 1 shows the structure of Example 1,
In the case of Examples 2 to 7, in this structure, Y%B
In place of a, an element other than Cu and 0 used in each example was substituted.
本実施例では、シートの厚みとして、２００μｍとした
が、これは３０μｍ〜１０００μｍの間で任意に形成す
ることができる。また大きさ、形状として、ｌＸＩＱｃ
ｍの矩形としたが、打抜き金型の形状を変えることによ
り、任意の形のシート状焼結体の得られることは、明ら
かである。In this embodiment, the thickness of the sheet is 200 μm, but it can be formed arbitrarily between 30 μm and 1000 μm. Also, in terms of size and shape, lXIQc
It is clear that a sheet-like sintered body of any shape can be obtained by changing the shape of the punching die.
以上述べた如く、本発明は、層状ペロブスカイト構造超
電導体酸化物用原料に、有機結合剤として、ポリ酢酸ビ
ニール、もしくはポリビニールブチラールのいずれか、
またはこれら両者を、０．７゜〜１５重量％と、可塑剤
を加え、これらを溶媒と共に混練して泥漿とし、前記泥
漿をシート状に一定厚みに形成して乾燥させて生シート
をつくり、この生シートを所定の形状に加工し、焼成す
ることによって、シート状酸化物超電導体を得るという
生産性に優れたシート状酸化物超電導体の製造方法を提
供するものである。As described above, the present invention uses polyvinyl acetate or polyvinyl butyral as an organic binder in a raw material for a layered perovskite superconducting oxide,
Or add 0.7° to 15% by weight of both of these and a plasticizer, knead them with a solvent to form a slurry, form the slurry into a sheet with a constant thickness and dry it to make a green sheet, The present invention provides a highly productive method for producing a sheet-like oxide superconductor, in which the raw sheet is processed into a predetermined shape and fired to obtain a sheet-like oxide superconductor.
図は本発明に用いた酸化物超電導体の結晶構造である、
層状ペロブスカイト構造の基本構成要素である、ペロブ
スカイト構造を示した説明図である。
１・・・・・・Ｃｕ、２・・・・・・０．３・・・・・
・ＹまたはＢａ。
代理人の氏名 弁理士 中尾敏男 はか１名１ ＝
Ｃｕ
−Ｑ
３− ＹまたはＢσThe figure shows the crystal structure of the oxide superconductor used in the present invention.
FIG. 2 is an explanatory diagram showing a perovskite structure, which is a basic component of a layered perovskite structure. 1...Cu, 2...0.3...
・Y or Ba. Name of agent: Patent attorney Toshio Nakao Haka1 person1 =
Cu −Q 3− Y or Bσ
Claims (3)
、有機結合剤として、ポリ酢酸ビニール、もしくはポリ
ビニールブチラールのいずれか、またはこれら両者を、
０．７〜１５重量％と、可塑剤を加え、これらを溶媒と
共に混練して泥漿とし、前記泥漿をシート状に形成して
乾燥させて 生シートをつくり、この生シートを所定の形状に加工し
、焼成することを特徴とする酸化物超電導体の製造方法
。(1) Adding either polyvinyl acetate or polyvinyl butyral, or both, as an organic binder to the raw material for the layered perovskite structure superconductor oxide,
Add 0.7 to 15% by weight and a plasticizer, knead these with a solvent to form a slurry, form the slurry into a sheet and dry it to make a green sheet, and process this green sheet into a predetermined shape. 1. A method for producing an oxide superconductor, the method comprising:
て、Ａ−Ｂａ−Ｃｕ酸化物（但しＡは、Ｙ、Ｓｃ、希土
類）、またはＬａ−Ｂ−Ｃｕ酸化物（但しＢは、Ｃａ、
Ｓｒ）、またはＹ−Ｓｒ−Ｃｕの酸化物を用いたことを
特徴とする特許請求の範囲第（１）項記載の酸化物超電
導体の製造方法。(2) Layered perovskite structure superconductor oxide raw material: A-Ba-Cu oxide (where A is Y, Sc, rare earth) or La-B-Cu oxide (where B is Ca,
The method for manufacturing an oxide superconductor according to claim (1), characterized in that an oxide of Sr) or Y-Sr-Cu is used.
Ｄｙ、Ｇｄを用いたことを特徴とする特許請求の範囲第
（２）項記載の酸化物超電導体の製造方法。(3) Rare earths include La, Yb, Tm, Er, Ho,
The method for manufacturing an oxide superconductor according to claim (2), characterized in that Dy and Gd are used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62102238A JPS63267508A (en) | 1987-04-24 | 1987-04-24 | Manufacture of superconductor of oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62102238A JPS63267508A (en) | 1987-04-24 | 1987-04-24 | Manufacture of superconductor of oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63267508A true JPS63267508A (en) | 1988-11-04 |
Family
ID=14322055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62102238A Pending JPS63267508A (en) | 1987-04-24 | 1987-04-24 | Manufacture of superconductor of oxide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63267508A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5023230A (en) * | 1987-09-08 | 1991-06-11 | Hercules Incorporated | Oxide superconductors encased in pan-derived carbon matrix |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63260854A (en) * | 1987-03-16 | 1988-10-27 | アメリカン テレフォン アンド テレグラフ カムパニー | Superconductor and manufacture |
-
1987
- 1987-04-24 JP JP62102238A patent/JPS63267508A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63260854A (en) * | 1987-03-16 | 1988-10-27 | アメリカン テレフォン アンド テレグラフ カムパニー | Superconductor and manufacture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5023230A (en) * | 1987-09-08 | 1991-06-11 | Hercules Incorporated | Oxide superconductors encased in pan-derived carbon matrix |
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