NO890561L - Forbedret fremgangsmaate for fremstilling av 90 k superledere. - Google Patents
Forbedret fremgangsmaate for fremstilling av 90 k superledere.Info
- Publication number
- NO890561L NO890561L NO89890561A NO890561A NO890561L NO 890561 L NO890561 L NO 890561L NO 89890561 A NO89890561 A NO 89890561A NO 890561 A NO890561 A NO 890561A NO 890561 L NO890561 L NO 890561L
- Authority
- NO
- Norway
- Prior art keywords
- approx
- precursor powder
- oxygen
- atomic ratio
- containing atmosphere
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000002887 superconductor Substances 0.000 title 1
- 239000000843 powder Substances 0.000 abstract 4
- 239000002243 precursor Substances 0.000 abstract 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 239000000243 solution Substances 0.000 abstract 2
- YASYEJJMZJALEJ-UHFFFAOYSA-N Citric acid monohydrate Chemical compound O.OC(=O)CC(O)(C(O)=O)CC(O)=O YASYEJJMZJALEJ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052692 Dysprosium Inorganic materials 0.000 abstract 1
- 229910052691 Erbium Inorganic materials 0.000 abstract 1
- 229910052693 Europium Inorganic materials 0.000 abstract 1
- 229910052688 Gadolinium Inorganic materials 0.000 abstract 1
- 229910052689 Holmium Inorganic materials 0.000 abstract 1
- 229910052765 Lutetium Inorganic materials 0.000 abstract 1
- 229910052779 Neodymium Inorganic materials 0.000 abstract 1
- 229910052772 Samarium Inorganic materials 0.000 abstract 1
- 229910052775 Thulium Inorganic materials 0.000 abstract 1
- 229910052769 Ytterbium Inorganic materials 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 150000001860 citric acid derivatives Chemical class 0.000 abstract 1
- 229960002303 citric acid monohydrate Drugs 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 238000001694 spray drying Methods 0.000 abstract 1
- 230000007704 transition Effects 0.000 abstract 1
- 229910052727 yttrium Inorganic materials 0.000 abstract 1
Landscapes
- Superconductors And Manufacturing Methods Therefor (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
bet beskrives en forbedret frem-gangsmåte for fremstilling av et supraledende materiale med formelen MBa2Cu3<>x hvori M er valgt fra gruppen bestående av Y, Nd, Sm, Eu, Gd, Dy, .Ho, Er, Tm, Yb og Lu, x er fra ca. 6,5 til ca. 7,0, idet materialet har en supraledende overgangs-temperatur av ca. 90 K, idet fremgangs-måten i det vesentlige består av oppvar-ming av et forløperpulver i en oxygenholdig atmosfære ved en temperatur fra ca. 875° C til ca. 950° C i en tid tilstrekkelig til å danneBaCuOy, hvori y er fra ca. 6,0 til ca. 6,4, og opprettholdel-se av dette MBa2Cu^Ov i en oxygenholdig atmosfære under avkjøling i en tid som er tilstrekkelig til å oppnå det ønskede produkt, idet det nevnte forløperpulver fremstilles ved (a) blanding av pulvere. av,a(O)8H0 og CuO i et atomforhold H:Ba:Cu av ca. 1:2:3 eller (b) dannelse av en vandig oppløsning av M(N0), Ba(N0)og Cu(N0)i et atomforhold M:Ba:Cu av ca. 1:2:3, til-setning av tilstrekkelig med sitronsyre-monohydrat til den erholdte oppløsning. til å omvandle de tilstedeværende metal-ler til deres tilsvarende sitrater, og sprøytetørking av den erholdte oppløs-ning for å oppnå forløperpulveret.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5984787A | 1987-06-09 | 1987-06-09 | |
| PCT/US1988/002025 WO1988010515A1 (en) | 1987-06-09 | 1988-06-08 | Improved process for making 90 k superconductors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO890561D0 NO890561D0 (no) | 1989-02-09 |
| NO890561L true NO890561L (no) | 1989-04-07 |
Family
ID=26739263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO89890561A NO890561L (no) | 1987-06-09 | 1989-02-09 | Forbedret fremgangsmaate for fremstilling av 90 k superledere. |
Country Status (2)
| Country | Link |
|---|---|
| DK (1) | DK620789A (no) |
| NO (1) | NO890561L (no) |
-
1989
- 1989-02-09 NO NO89890561A patent/NO890561L/no unknown
- 1989-12-08 DK DK620789A patent/DK620789A/da not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| DK620789D0 (da) | 1989-12-08 |
| DK620789A (da) | 1990-01-31 |
| NO890561D0 (no) | 1989-02-09 |
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