JPS643056A - Production of superconducting material - Google Patents
Production of superconducting materialInfo
- Publication number
- JPS643056A JPS643056A JP63067654A JP6765488A JPS643056A JP S643056 A JPS643056 A JP S643056A JP 63067654 A JP63067654 A JP 63067654A JP 6765488 A JP6765488 A JP 6765488A JP S643056 A JPS643056 A JP S643056A
- Authority
- JP
- Japan
- Prior art keywords
- calcined
- blend
- superconducting material
- perovskite
- compact
- 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 abstract 4
- 239000000203 mixture Substances 0.000 abstract 4
- 239000002245 particle Substances 0.000 abstract 3
- 238000002844 melting Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 238000001354 calcination Methods 0.000 abstract 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 abstract 1
- 239000002826 coolant Substances 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 150000002823 nitrates Chemical class 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 abstract 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
- H10N60/80—Constructional details
- H10N60/85—Superconducting active materials
- H10N60/855—Ceramic superconductors
- H10N60/857—Ceramic superconductors comprising copper oxide
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
PURPOSE:To obtain a superconducting material, consisting of perovskite-type oxides, capable of utilizing liquid N2 as a cooling medium and having the high critical tempera ture (TC), by blending oxides and salts of Ba, Ho and Cu, previously calcining the blend, pulverizing the calcined blend, pressing the resultant pulverized blend and nor mally sintering the obtained pressed compact at a temperature within a specific range. CONSTITUTION:Powders of oxides, carbonates, sulfates or nitrates of Ba, Ho and Cu having respective <=20mum, especially <=5mum average particle diameter are blended. The resultant blended powder is then previously calcined at 700-1,000 deg.C and the calcined, blend is pulverized to <=5mum, especially <=3mum average particle diameter and subsequently pressed at 60-80% relative density. The above-mentioned pressed compact is then normally sintered at a temperature within the range of (melting point of the aforementioned calcined compact) - (melting point of the above-mentioned calcined compact -100 deg.C). Thereby the aimed superconducting material consisting of a perovskite-type or pseudo-perovskite-type oxide, expressed by the formula and having <=10mum average crystal particle diameter is obtained. The aforementioned superconducting material has the high TC and TCF and characteristics thereof stabilized for a long period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63-67654A JPH013056A (en) | 1987-03-22 | 1988-03-22 | Method for manufacturing superconducting materials |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-66204 | 1987-03-22 | ||
| JP6620487 | 1987-03-22 | ||
| JP63-67654A JPH013056A (en) | 1987-03-22 | 1988-03-22 | Method for manufacturing superconducting materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS643056A true JPS643056A (en) | 1989-01-06 |
| JPH013056A JPH013056A (en) | 1989-01-06 |
Family
ID=
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173885A (en) * | 1984-02-18 | 1985-09-07 | Nippon Telegr & Teleph Corp <Ntt> | Superconductive material of oxide and manufacture thereof |
| JPS6122511A (en) * | 1984-07-09 | 1986-01-31 | 三菱電機株式会社 | Method of producing pbmo6s8 compound superconductive wire blank |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173885A (en) * | 1984-02-18 | 1985-09-07 | Nippon Telegr & Teleph Corp <Ntt> | Superconductive material of oxide and manufacture thereof |
| JPS6122511A (en) * | 1984-07-09 | 1986-01-31 | 三菱電機株式会社 | Method of producing pbmo6s8 compound superconductive wire blank |
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