JPS63304524A - Manufacture of ceramic superconductor - Google Patents
Manufacture of ceramic superconductorInfo
- Publication number
- JPS63304524A JPS63304524A JP62138694A JP13869487A JPS63304524A JP S63304524 A JPS63304524 A JP S63304524A JP 62138694 A JP62138694 A JP 62138694A JP 13869487 A JP13869487 A JP 13869487A JP S63304524 A JPS63304524 A JP S63304524A
- Authority
- JP
- Japan
- Prior art keywords
- ceramic
- copper
- metal tube
- machining
- powder
- 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 33
- 239000002887 superconductor Substances 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 claims abstract description 20
- 239000010949 copper Substances 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 14
- 238000000227 grinding Methods 0.000 claims 1
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 7
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 5
- 238000003754 machining Methods 0.000 abstract 6
- 239000007788 liquid Substances 0.000 description 6
- 239000004020 conductor Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229910020012 Nb—Ti Inorganic materials 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910000657 niobium-tin Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- SEPPVOUBHWNCAW-FNORWQNLSA-N (E)-4-oxonon-2-enal Chemical compound CCCCCC(=O)\C=C\C=O SEPPVOUBHWNCAW-FNORWQNLSA-N 0.000 description 1
- LLBZPESJRQGYMB-UHFFFAOYSA-N 4-one Natural products O1C(C(=O)CC)CC(C)C11C2(C)CCC(C3(C)C(C(C)(CO)C(OC4C(C(O)C(O)C(COC5C(C(O)C(O)CO5)OC5C(C(OC6C(C(O)C(O)C(CO)O6)O)C(O)C(CO)O5)OC5C(C(O)C(O)C(C)O5)O)O4)O)CC3)CC3)=C3C2(C)CC1 LLBZPESJRQGYMB-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 229910020018 Nb Zr Inorganic materials 0.000 description 1
- 229910001257 Nb alloy Inorganic materials 0.000 description 1
- 229910000750 Niobium-germanium Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241000282485 Vulpes vulpes Species 0.000 description 1
- -1 Y 2O3 Chemical compound 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- PMTRSEDNJGMXLN-UHFFFAOYSA-N titanium zirconium Chemical compound [Ti].[Zr] PMTRSEDNJGMXLN-UHFFFAOYSA-N 0.000 description 1
- 229910000999 vanadium-gallium Inorganic materials 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
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はセラミック系超電導々体の製造方法に関し、特
に、セラミック系の超電導材料と安定化部材を複合化し
て長尺線材とするセラミック系超電導々体の製造方法に
関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing a ceramic superconductor, and in particular, to a ceramic superconductor in which a ceramic superconductor material and a stabilizing member are combined into a long wire material. The present invention relates to a method of manufacturing a body.
従来の超電導４体はＮｂ−Ｔｉ、Ｎｂ−Ｚｒ、 Ｎｂ−
Ｔｉ−Ｚｒ等の合金系、あるいはＮｂ３Ｓｎ、（Ｎｂ−
Ｔｉ）＋Ｓｎ 。The four conventional superconductors are Nb-Ti, Nb-Zr, and Nb-
Alloys such as Ti-Zr, Nb3Sn, (Nb-
Ti)+Sn.
Ｖ３Ｇａ等の化合物系が実用化されている。これらの超
電導臨界温度（以下、華にＴｃとする）は何れも２０に
以下である。実用化に至っていないが、Ｔｃの最も高い
Ｎｂ３Ｇｅにしても高々２４に以下である。従って、こ
れらの超電導々体は冷媒として液体Ｈｅを使用せざるを
得ない。Compound systems such as V3Ga have been put into practical use. All of these superconducting critical temperatures (hereinafter referred to as Tc) are below 20. Although it has not been put to practical use, even Nb3Ge, which has the highest Tc, is at most 24 or less. Therefore, these superconductors have no choice but to use liquid He as a coolant.
この液体Ｈｅは沸点は低い（４，２Ｋ）が非常に高価で
あり、かつ、液体状態に保つためには高度な断熱技術を
必要とする。一方、最近発見されたセラミック系超電導
材、例えば、ｙ−Ｂａ−Ｃｕ−０はＴｃが９０に以上と
高温である。このように、Ｔｃが高くなると、冷媒とし
て安価で、かつ、高度な断熱技術を要しない液体Ｎ２を
使用することが可能になり、全体的なコストは従来の液
体Ｈｅを使用した超電導々体に比べ軽減する。Although this liquid He has a low boiling point (4.2K), it is very expensive and requires advanced insulation technology to maintain it in a liquid state. On the other hand, recently discovered ceramic superconducting materials, such as y-Ba-Cu-0, have a Tc of 90 or more, which is a high temperature. In this way, when Tc increases, it becomes possible to use liquid N2 as a refrigerant, which is inexpensive and does not require advanced insulation technology, and the overall cost is lower than that of conventional superconductors using liquid He. Compare and reduce.
しかし、このようなセラミック系超電導々体に大電流を
流しているとき、超電導材の超電導状態が破れ、常電導
状態になった場合、セラミック系超電導々体の常電導状
態での比抵抗は約１０−３Ωｃｍと非常に大きいので焼
損する可能性が高い。従って、セラミック系超電導々体
においても従来のＮｂ−Ｔｉ 、Ｎｂ３Ｓｎ超電導々超
電導様に比抵抗の非常に小さい金属、例えば、銅を安定
化部材として使用し、導体の焼損を防止する方法をとら
ざる得ない。例えば、銅は液体Ｎ２温度７７Ｋにおいて
比抵抗は約１０−７Ωｃｍであり、セラミック系超電導
材の１０、０００分の１であり、安定化金属として有力
である。However, when a large current is passed through such a ceramic superconductor, if the superconducting state of the superconducting material is broken and it becomes a normal conducting state, the specific resistance of the ceramic superconducting material in the normal conducting state is approximately Since it is very large at 10-3 Ωcm, there is a high possibility that it will burn out. Therefore, even in ceramic superconductors, it is necessary to use a metal with a very low resistivity, such as copper, as a stabilizing member in the same way as conventional Nb-Ti and Nb3Sn superconductors to prevent burnout of the conductor. I don't get it. For example, copper has a specific resistance of about 10-7 Ωcm at a liquid N2 temperature of 77 K, which is 1/10,000 of that of ceramic superconducting materials, making it a promising stabilizing metal.
従来の超電辺材と安定化部材の複合化は安定化金属のチ
ューブに超電導材を挿入し、熱間での押出法により所定
のサイズに押出し、それを引抜法により細径化し、更に
これを複数本束ねて安定化金属チューブに挿入し、再度
押出した後引抜きにより細径化する方法が採用されてい
る。Conventionally, the composite of superconducting sap material and stabilizing member is achieved by inserting superconducting material into a stabilizing metal tube, extruding it to a specified size using hot extrusion, reducing the diameter using pultrusion, and then The method used is to bundle multiple tubes together, insert them into a stabilizing metal tube, extrude them again, and then pull them out to reduce the diameter.
このように従来法では押出法により安定化部材と超電導
材を複合化しているが、超電導材がセラミック系材料に
なると、非常に硬くて脆いため、従来法の如き押出法は
採用出来ない。As described above, in the conventional method, the stabilizing member and the superconducting material are combined using the extrusion method, but when the superconducting material becomes a ceramic material, it is extremely hard and brittle, so the extrusion method as in the conventional method cannot be used.
本発明は上記に鑑みてなされたものであり、硬くて脆い
セラミック系材料と安定化材料の複合化を可能にするた
め、スウエージング加工、引抜加工を施すようにしたセ
ラミック系超電導々体の製造方法を提供する。The present invention has been made in view of the above, and is directed to the production of a ceramic superconductor that is subjected to swaging and drawing in order to make it possible to combine a hard and brittle ceramic material with a stabilizing material. provide a method.
即ち、本発明のセラミック系超電導々体の製造方法は以
下の手段を備えている。That is, the method for manufacturing a ceramic superconductor of the present invention includes the following means.
（１１複合化工程
セラミック系の超電導材料と、常電導状態において比電
気抵抗が前記超電導材料に比較して非常に小さい安定化
部材を複合化する。(11 Composite step: Composite a ceramic superconducting material and a stabilizing member whose specific electrical resistance in a normal conductive state is much smaller than that of the superconducting material.
例えば、Ｙ−Ｂａ−Ｃｕ−０のセラミフクスを粉末化し
、これをｔ同、１同合金、アルミニウム、アルミニウム
合金等の金属管に充填してスウェージング加工、引抜加
工を施すか、あるいはバインダーを用いて銅、銅合金、
アルミニウム、アルミニウム合金等の金属板上に塗布し
、渦巻状に巻き上げる。For example, Y-Ba-Cu-0 ceramic fuchs is powdered and filled into a metal tube made of aluminum, aluminum alloy, aluminum, aluminum alloy, etc., and subjected to swaging or drawing, or using a binder. copper, copper alloy,
It is applied onto a metal plate such as aluminum or aluminum alloy and rolled up into a spiral shape.
（２）挿入工程
複合工程において、得られた複合化材料を所定の本数、
例えば、１００本束ねて銅、銅合金、アルミニウム、ア
ルミニウム合金等の金属管に挿入する。一方、銅、銅合
金、アルミニウム、アルミニウム合金の金属板上にバイ
ンダーによって前記粉末を塗布したときは金属板を渦巻
状に巻き上げた線材を挿入する。(2) Insertion process In the composite process, the obtained composite material is inserted into a predetermined number of pieces,
For example, 100 pieces are bundled and inserted into a metal tube made of copper, copper alloy, aluminum, aluminum alloy, or the like. On the other hand, when the powder is applied onto a metal plate of copper, copper alloy, aluminum, or aluminum alloy using a binder, a wire made of a spirally wound metal plate is inserted.
（３）スウェージング加工、引抜加工の工程複合材料を
挿入された金属管にスウェージング加工、引抜加工を施
して所定の外径にする。この後、必要に応じて、所定の
時間にわたって加熱を施す。この加熱は不活性雰囲下で
行われる方が望ましい。(3) Swaging and drawing process The metal tube into which the composite material has been inserted is subjected to swaging and drawing processes to obtain a predetermined outer diameter. Thereafter, heating is performed for a predetermined period of time, if necessary. Preferably, this heating is performed under an inert atmosphere.
以下、本発明のセラミック系超電導々体の製造方法を詳
細に説明する。Hereinafter, the method for manufacturing a ceramic superconductor of the present invention will be explained in detail.
第１回は本発明の第１の実施例を示し、ＢａＣＯ３、Ｙ
２Ｏ３、ＣｕＯの粉末（粒径１〜２０μｍ）をＢａ、
Ｙ 、 Ｃｕのモル比率が約０．６：０．４： １にな
るように秤量、混合し、これを９００°Ｃで大気中で２
４時間加熱した。この得られた−次焼成セラミックスを
粉砕し、粒径０．５〜２０μｍの粉末１とした。この粉
末１を外径１０１１、肉厚２龍の無酸素銅管２に挿入し
、スェージング加工、引抜加工を施し、外径２１１１の
複合材３とした。更にこれを４００°Ｃ×３０分加熱し
、銅を軟化した後これを１００本束ねて内径３０ｍｍ、
肉厚３１Ｍの無酸素銅管４に挿入し、スェージング加工
、引抜加工を施し、外径３ＩＩｍの長尺体５にした。こ
れを１０００℃×３０分Ａｒ雰囲気中で加熱した。得ら
れた安定化鋼複合セラミック系超電導々体のＴｃは約９
０にてあり、又常電導状態でも安定化銅の効果により導
体が焼損することもなく、優れた特性が得られることが
判った。The first part shows the first embodiment of the present invention, and includes BaCO3, Y
2O3, CuO powder (particle size 1 to 20 μm), Ba,
They were weighed and mixed so that the molar ratio of Y and Cu was approximately 0.6:0.4:1, and this was heated at 900°C in the air for 2 hours.
Heated for 4 hours. The obtained second-sintered ceramic was pulverized to form a powder 1 having a particle size of 0.5 to 20 μm. This powder 1 was inserted into an oxygen-free copper tube 2 with an outer diameter of 1011 and a wall thickness of 2 mm, and subjected to swaging and drawing to obtain a composite material 3 with an outer diameter of 2111. This was further heated at 400°C for 30 minutes to soften the copper, and then 100 pieces were bundled to form an inner diameter of 30mm.
It was inserted into an oxygen-free copper tube 4 with a wall thickness of 31M, and subjected to swaging and drawing processes to form a long body 5 with an outer diameter of 3IIm. This was heated at 1000° C. for 30 minutes in an Ar atmosphere. The Tc of the obtained stabilized steel composite ceramic superconductor is approximately 9.
0, and it was found that even in a normal conductive state, the conductor did not burn out due to the effect of the stabilized copper, and excellent characteristics were obtained.
第２図は本発明の第２の実施例を示し、第１の実施例と
同じようにして得られた一次焼成セラミソクス粉末をメ
タクリル酸原液、トルエン混合液中に重量％て各々６０
％、１０％、３０％の割合で混合し、ペースト状の塗布
１１としてこれを厚さ０．５ｍｍ、幅５００龍の無酸素
銅板１２の片面に塗布した。更にこれを自然乾燥した後
、板幅片端から渦巻状に巻き上げて線状体１３とした後
、スウェージング加工、引抜加工を施し、外径３１ｍの
長尺体１４とした。これを１００°Ｃ×３０分Ａｒ雰囲
気中で加熱した。得られた安定化銅複合セラミック系超
電導々体のＴｃは約９０にであり、又常電導状態でも銅
の安定化効果により導体が焼損することもな（優れた特
性が得られた。FIG. 2 shows a second embodiment of the present invention, in which primary calcined ceramic powder obtained in the same manner as in the first embodiment was added to a methacrylic acid stock solution and a toluene mixed solution at a concentration of 60% by weight, respectively.
%, 10%, and 30% and applied as a paste coating 11 on one side of an oxygen-free copper plate 12 with a thickness of 0.5 mm and a width of 500 mm. Further, this was air-dried and then spirally rolled up from one end of the board width to form a linear body 13, which was then subjected to swaging and drawing to form a long body 14 having an outer diameter of 31 m. This was heated at 100°C for 30 minutes in an Ar atmosphere. The Tc of the obtained stabilized copper composite ceramic superconductor was approximately 90, and the conductor did not burn out due to the stabilizing effect of copper even in a normal conductive state (excellent characteristics were obtained).
以上説明した通り、本発明のセラミック系超電導々体の
製造方法によると、セラミック系超電導材料と安定化部
材を複合化してスウェージング加工、引抜加工を施すよ
うにしたため、硬くて脆いセラミック系超電導材料を使
用した超電導々体を製造することができる。As explained above, according to the method for manufacturing a ceramic superconductor of the present invention, the ceramic superconducting material and the stabilizing member are combined and subjected to swaging processing and drawing processing, so that the ceramic superconducting material becomes hard and brittle. It is possible to manufacture superconducting conductors using
第１図および第２図は本発明の第１および第２の実施例
を示す説明図。
符号の説明
１−−−−−−−−−−セラミック系粉末２−−−−−
−−−一銅管
３−−−〜−−−−−−複合材
４ −−−−−−一〜１同管
５−−−−−−一長尺体
１：２−−−−−−銅板
１３−−−−一渦巻体
１４−−−−−−−−−一長尺体
特許出願人 日立電線株式会社
代理人 弁理士 平 １） 忠 雄−〇へ◎FIGS. 1 and 2 are explanatory diagrams showing first and second embodiments of the present invention. Explanation of symbols 1 ------- Ceramic powder 2 -------
---One copper tube 3-------------Composite material 4-----One to one same tube 5---One long body 1:2----- -Copper plate 13---One spiral body 14---One long body Patent applicant Hitachi Cable Co., Ltd. Agent Patent attorney Hei 1) Tadao - To 〇◎
Claims (3)
て比電気抵抗が前記超電導材料に比較して非常に小さい
銅等の安定化部材を複合化し、 前記複合化によって得られた複数本の複合材を銅等の金
属管に挿入し、 前記金属管にスウェージング加工、引抜加工を施すこと
を特徴とするセラミック系超電導々体の製造方法。(1) Composite a ceramic superconducting material and a stabilizing member such as copper whose specific electrical resistance in a normal conductive state is very small compared to the superconducting material, and multiple composite materials obtained by the composite. 1. A method for manufacturing a ceramic superconductor, comprising: inserting a metal tube into a metal tube such as copper, and subjecting the metal tube to swaging and drawing.
粉末とし、前記粉末を銅等の金属管に充填し、前記金属
管にスウェージング加工、引抜加工を施す特許請求の範
囲第１項記載のセラミック系超電導々体の製造方法。(2) The above-mentioned compositing comprises powdering the ceramic superconducting material, filling a metal tube such as copper with the powder, and subjecting the metal tube to swaging and drawing. A method for manufacturing a ceramic superconductor.
粉末とし、前記粉末をバインダーを用いて前記安定化部
材に塗布する特許請求の範囲第１項記載のセラミック系
超電導々体の製造方法。(3) The method for manufacturing a ceramic superconductor according to claim 1, wherein the composite is made of the ceramic superconducting material as a powder, and the powder is applied to the stabilizing member using a binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62138694A JPS63304524A (en) | 1987-06-02 | 1987-06-02 | Manufacture of ceramic superconductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62138694A JPS63304524A (en) | 1987-06-02 | 1987-06-02 | Manufacture of ceramic superconductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63304524A true JPS63304524A (en) | 1988-12-12 |
Family
ID=15227933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62138694A Pending JPS63304524A (en) | 1987-06-02 | 1987-06-02 | Manufacture of ceramic superconductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63304524A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0311505A (en) * | 1989-06-06 | 1991-01-18 | Chiyoudendou Hatsuden Kanren Kiki Zairyo Gijutsu Kenkyu Kumiai | Manufacture of oxide superconductive conductor |
-
1987
- 1987-06-02 JP JP62138694A patent/JPS63304524A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0311505A (en) * | 1989-06-06 | 1991-01-18 | Chiyoudendou Hatsuden Kanren Kiki Zairyo Gijutsu Kenkyu Kumiai | Manufacture of oxide superconductive conductor |
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