JPS63262208A - Manufacture of ceramic superconductive molding - Google Patents
Manufacture of ceramic superconductive moldingInfo
- Publication number
- JPS63262208A JPS63262208A JP9663687A JP9663687A JPS63262208A JP S63262208 A JPS63262208 A JP S63262208A JP 9663687 A JP9663687 A JP 9663687A JP 9663687 A JP9663687 A JP 9663687A JP S63262208 A JPS63262208 A JP S63262208A
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- ceramic
- molded body
- superconductive
- water
- 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 20
- 238000000465 moulding Methods 0.000 title claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000002002 slurry Substances 0.000 claims abstract description 16
- 239000002887 superconductor Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011505 plaster Substances 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000005245 sintering Methods 0.000 claims abstract description 4
- 239000004094 surface-active agent Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 13
- 239000001993 wax Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 9
- 239000011230 binding agent Substances 0.000 abstract description 2
- 239000003960 organic solvent Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000009257 reactivity Effects 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 229910052602 gypsum Inorganic materials 0.000 description 5
- 239000010440 gypsum Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910002482 Cu–Ni Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Landscapes
- Producing Shaped Articles From Materials (AREA)
- 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ス超電導成形体の製造方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a ceramic superconducting molded body.
アルカリ土金属、希土類元素、銅及び酸素からなる酸化
物超電導成形体等のセラミックス超電導成形体はＴｃが
高く、その応用が期待されているが、該セラミックス超
電導成形体は一般に成形加工が困難であり、プレス成形
法、金属被覆後伸線又は圧延する方法、溶湯急冷法等が
試みられているものの、成形される形状に制約があり、
複雑な形状の成形体に加工することは従来困難であった
。Ceramic superconducting compacts such as oxide superconducting compacts made of alkaline earth metals, rare earth elements, copper, and oxygen have a high Tc and are expected to be used, but these ceramic superconducting compacts are generally difficult to mold. , press forming methods, wire drawing or rolling methods after metal coating, molten metal quenching methods, etc. have been tried, but there are restrictions on the shapes that can be formed.
Conventionally, it has been difficult to process molded products into complex shapes.
特に超電導コイルは今後巾広い用途が期待される分野で
あり、通常は金属被覆径伸線加工した線材をコイル状に
成形加工する方法がとられているが、前記方法では加工
がかなり困難で、内部欠陥が多量に発生し、そのためＴ
ｃ及びＪｃが低くなり問題となっていた。In particular, superconducting coils are a field that is expected to have a wide range of applications in the future, and the usual method is to form a wire rod that has been drawn with a metal coating into a coil shape, but processing using the above method is quite difficult. A large number of internal defects occur, so T
c and Jc became low, which caused a problem.
〔問題点を解決するための手段］
本発明は上記の点に鑑み鋭意検討の結果なされたもので
あり、その目的とするところは、複雑な形状の成形体で
あっても容易に製造することが出来、しかも超電導特性
が優れた（即ちＴｃ及びＪｃが高い）成形体が得られる
様なセラミックス超電導成形体の製造方法を提供するこ
とである。[Means for Solving the Problems] The present invention has been made as a result of intensive studies in view of the above points, and its purpose is to easily manufacture even molded products with complex shapes. It is an object of the present invention to provide a method for manufacturing a ceramic superconducting molded body, which can yield a molded body having excellent superconducting properties (that is, high Tc and Jc).
即ち本発明は石こう製鋳型内にセラミックス超電導体を
浮遊させたスラリーを注入し、脱水・乾燥後焼結するこ
とを特徴とするセラミックス超電導成形体の製造方法で
ある。That is, the present invention is a method for producing a ceramic superconducting molded body, which is characterized by injecting a slurry containing suspended ceramic superconductors into a plaster mold, dehydrating and drying the slurry, and then sintering the slurry.
本発明においては、任意の形状に加工できる石こう製鋳
型を用いているため、あらゆる形状の超電導成形体を製
造することが可能であるが、本発明は特に今後中広い用
途が期待される超電導コイル等の製造が容易なものであ
る。In the present invention, since a gypsum mold that can be processed into any shape is used, it is possible to manufacture superconducting molded bodies of any shape, but the present invention is particularly applicable to superconducting coils, which are expected to have a wide range of applications in the future. etc., are easy to manufacture.
又本発明は特に最近高いＴ ｃ ４Ｍが報告されている
酸化物系超電導体からなる成形体の製造が容易なもので
あるが、窒化物系等その他のセラミックス超電導体から
なる成形体に対しても適用することが出来る。In addition, although the present invention facilitates the production of molded bodies made of oxide-based superconductors, which have recently been reported to have a high T c 4M, it is difficult to produce molded bodies made of other ceramic superconductors such as nitride-based can also be applied.
本発明に用いるスラリーは、例えばアルカリ出金属、希
土類元素、銅及び酸素からなる酸化物系超電導体の粉末
を水等の媒質中に分散させたものであるが、前記スラリ
ーには更に超電導体粉末を均一に分散させるための表面
活性剤並びにワックス等のバインダーが配合されている
ことが望ましい。又スラリーが含有する水に対して、ア
セトン、トルエン等の有機溶媒を０〜１００％配合する
ことが、分散性の向上、原料粉体の水との反応性を緩和
するという点から好ましい物である。The slurry used in the present invention is made by dispersing powder of an oxide superconductor comprising, for example, an alkali metal, a rare earth element, copper, and oxygen in a medium such as water. It is desirable that a surfactant and a binder such as wax be blended to uniformly disperse the ingredients. In addition, it is preferable to mix 0 to 100% of an organic solvent such as acetone or toluene with respect to the water contained in the slurry, from the viewpoint of improving dispersibility and mitigating the reactivity of the raw material powder with water. be.
本発明においては、任意の形状に加工できる石こう製鋳
型にスラリーを注入してセラミックス超電導成形体を製
造するので、複雑な形状の成形体であっても容易に製造
することが出来る。In the present invention, a ceramic superconducting molded body is manufactured by injecting slurry into a gypsum mold that can be processed into any shape, so even a molded body with a complicated shape can be easily manufactured.
又成形型に石こう製鋳型を用いているので、スラリー中
の水分が前記鋳型に吸収される際に吸引力によって粉末
の密度が上昇し、内部欠陥が少なく従って高いＴｃ値及
びＪｃ値を有する成形体を得ることが出来る。In addition, since a gypsum mold is used as the mold, the density of the powder increases due to the suction force when water in the slurry is absorbed into the mold, resulting in molding with few internal defects and high Tc and Jc values. You can get a body.
次に本発明を実施例により更に具体的に説明する。 Next, the present invention will be explained in more detail with reference to Examples.
ＹＢａｔ Ｃｕ３０？−δ（０くδ〈１）なる構造式で
示される超電導粉体（粒度＜ ３００メツシユ）１００
ｇをパラフィンワックス２ｇと表面活性剤０．５ｇを加
えた水３（ｌｄに分散させスラリー状とした。このスラ
リーを第１図（ａ）、（ロ）に示すような外径１００φ
■、溝の深さと幅５Ｍｍ、ターン数３ターンの渦巻コイ
ル状の石こう製鋳型（１）に鋳込んで超電導成形体２と
し約１時間後に脱型した。得られた渦巻コイル状成形体
は成形体密度が６２％と高くこれを大気中で９５０℃Ｘ
２ｈｒ焼結して超電導コイルを得た。YBat Cu30? -δ (0 x δ<1) superconducting powder (particle size < 300 mesh) 100
g was dispersed in water 3 (ld) containing 2 g of paraffin wax and 0.5 g of a surfactant to form a slurry.
(2) It was cast into a spiral coil-shaped gypsum mold (1) with a groove depth and width of 5 mm and a number of turns of 3 to form a superconducting molded body 2, which was demolded after about 1 hour. The obtained spiral coil-shaped compact had a high compact density of 62% and was heated at 950°C in the atmosphere.
A superconducting coil was obtained by sintering for 2 hours.
実施例と同様の組成、構造の超電導粉を外径１５φ論、
内径１０φ論、長さ３００＋ｍａのＣｕ−Ｎｉ合金のパ
イプに充填し、冷間で伸線して、外径８．５φｍの複合
線状体とした。このＣｕ−Ｎｉ合金を外皮とし内部に超
電導粉を充填した複合線状体を実施例と同様の渦巻コイ
ル状に成形した。得られた成形体は超電導粉の充填密度
が５５％と低かった。Superconducting powder with the same composition and structure as the example was used with an outer diameter of 15φ,
It was filled into a Cu-Ni alloy pipe with an inner diameter of 10 φ and a length of 300+ ma, and was cold drawn to obtain a composite linear body with an outer diameter of 8.5 φ m. A composite linear body made of this Cu-Ni alloy as an outer shell and filled with superconducting powder inside was formed into a spiral coil shape similar to the example. The resulting compact had a superconducting powder packing density as low as 55%.
このコイルを大気中で９５０℃Ｘ２ｈｒ焼結して超電導
コイルを得た。This coil was sintered at 950° C. for 2 hours in the air to obtain a superconducting coil.
前記実施例及び従来例の方法で製造した超電導成形体の
Ｔｃ及びＪｃを測定し、その結果を第１表に示した。The Tc and Jc of the superconducting molded bodies manufactured by the methods of the above examples and conventional examples were measured, and the results are shown in Table 1.
第１表
第１表から明らかな様に、本発明の方法品は、従来の方
法品に比べて、Ｔｃ及びＪｃが高く優れた超電導特性を
示している。As is clear from Table 1, the products produced by the method of the present invention exhibit superior superconducting properties with higher Tc and Jc than products produced by the conventional method.
本発明の方法によれば複雑な形状の成形体であっても容
易に製造することが出来、しかも超電導特性が優れた成
形体が得られる等工業上顕著な効果を奏するものである
。According to the method of the present invention, it is possible to easily produce a molded body even with a complicated shape, and furthermore, it exhibits remarkable industrial effects such as obtaining a molded body with excellent superconducting properties.
第１図（ａ）は本発明によるセラミックス超電導成形体
の製造方法を示す平面図、第１図（ロ）は第１図（ａ）
のＡ−Ａ断面図である。
１・・・石こう型鋳型、 ２・・・超電導成形体。FIG. 1(a) is a plan view showing a method for manufacturing a ceramic superconducting molded body according to the present invention, and FIG. 1(b) is a plan view of FIG. 1(a).
It is an AA sectional view of. 1... Gypsum mold, 2... Superconducting molded body.
Claims (5)
せたスラリーを注入し、脱水・乾燥後焼結することを特
徴とするセラミックス超電導成形体の製造方法。(1) A method for producing a ceramic superconducting molded body, which comprises injecting a slurry containing suspended ceramic superconductors into a plaster mold, dehydrating and drying the slurry, and then sintering it.
ることを特徴とする特許請求の範囲第１項記載のセラミ
ックス超電導成形体の製造方法。(2) The method for manufacturing a ceramic superconducting molded body according to claim 1, wherein the ceramic superconducting molded body has a coil shape.
ことを特徴とする特許請求の範囲第１項記載のセラミッ
クス超電導成形体の製造方法。(3) The method for producing a ceramic superconducting molded body according to claim 1, wherein the ceramic superconductor is an oxide-based superconductor.
のであることを特徴とする特許請求の範囲第１項記載の
セラミックス超電導成形体の製造方法。(4) The method for producing a ceramic superconducting molded body according to claim 1, wherein the slurry contains a surfactant, wax, and water.
エンの内の１種以上を０〜１００％配合されているもの
であることを特徴とする特許請求の範囲第１項記載のセ
ラミックス超電導成形体の製造方法。(5) Ceramic superconducting molding according to claim 1, wherein the slurry contains 0 to 100% of one or more of acetone and toluene based on the water contained therein. How the body is manufactured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9663687A JPS63262208A (en) | 1987-04-20 | 1987-04-20 | Manufacture of ceramic superconductive molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9663687A JPS63262208A (en) | 1987-04-20 | 1987-04-20 | Manufacture of ceramic superconductive molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63262208A true JPS63262208A (en) | 1988-10-28 |
Family
ID=14170320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9663687A Pending JPS63262208A (en) | 1987-04-20 | 1987-04-20 | Manufacture of ceramic superconductive molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63262208A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6425507A (en) * | 1987-07-22 | 1989-01-27 | Fujikura Ltd | Manufacture of superconductive magnetic coil |
| US5306405A (en) * | 1992-06-26 | 1994-04-26 | Minnesota Mining And Manufacturing Company | Sputtering target and method of manufacture |
| US5637199A (en) * | 1992-06-26 | 1997-06-10 | Minnesota Mining And Manufacturing Company | Sputtering shields and method of manufacture |
-
1987
- 1987-04-20 JP JP9663687A patent/JPS63262208A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6425507A (en) * | 1987-07-22 | 1989-01-27 | Fujikura Ltd | Manufacture of superconductive magnetic coil |
| US5306405A (en) * | 1992-06-26 | 1994-04-26 | Minnesota Mining And Manufacturing Company | Sputtering target and method of manufacture |
| US5637199A (en) * | 1992-06-26 | 1997-06-10 | Minnesota Mining And Manufacturing Company | Sputtering shields and method of manufacture |
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