IT1249817B - Procedimento per la produzione di polveri per materiali ceramici superconduttori - Google Patents
Procedimento per la produzione di polveri per materiali ceramici superconduttoriInfo
- Publication number
- IT1249817B IT1249817B ITRM910555A ITRM910555A IT1249817B IT 1249817 B IT1249817 B IT 1249817B IT RM910555 A ITRM910555 A IT RM910555A IT RM910555 A ITRM910555 A IT RM910555A IT 1249817 B IT1249817 B IT 1249817B
- Authority
- IT
- Italy
- Prior art keywords
- powders
- procedure
- production
- ceramic materials
- complexes
- Prior art date
Links
- 239000000843 powder Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 229910010293 ceramic material Inorganic materials 0.000 title 1
- -1 ammonium ions Chemical class 0.000 abstract 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 abstract 1
- 229910002651 NO3 Inorganic materials 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 abstract 1
- 229910001422 barium ion Inorganic materials 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 229910001431 copper ion Inorganic materials 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000000197 pyrolysis Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 230000001960 triggered effect Effects 0.000 abstract 1
- 229910052727 yttrium Inorganic materials 0.000 abstract 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 abstract 1
- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G3/00—Compounds of copper
- C01G3/006—Compounds containing, besides copper, two or more other elements, with the exception of oxygen or hydrogen
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/45—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides
- C04B35/4504—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides containing rare earth oxides
- C04B35/4508—Type 1-2-3
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/775—High tc, above 30 k, superconducting material
- Y10S505/776—Containing transition metal oxide with rare earth or alkaline earth
- Y10S505/779—Other rare earth, i.e. Sc,Y,Ce,Pr,Nd,Pm,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu and alkaline earth, i.e. Ca,Sr,Ba,Ra
- Y10S505/78—Yttrium and barium-, e.g. YBa2Cu307
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
L'invenzione riguarda un processo per la pirolisi di polveri YBCO caratterizzato dalla preparazione di una soluzione acquosa limpida contenente gli ioni di ittrio, bario e rame, nelle proporzioni finali volute per la polvere, in forma di complessi, preferibilmente complessi citrici , ed in presenza di un sistema detonante, quale ad es. una combinazione di ioni ammonio e ioni nitrato. La soluzione limpida viene quindi fatta concentrare per evaporazione fino all'innesco di una violenta combustione che viene condotta ad elevata temperatura, superiore a 250°C, preferibilmente superiore a 850°C.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITRM910555A IT1249817B (it) | 1991-07-23 | 1991-07-23 | Procedimento per la produzione di polveri per materiali ceramici superconduttori |
EP92112393A EP0524586B1 (en) | 1991-07-23 | 1992-07-20 | Process for the manufacture of powders for superconductive ceramic materials |
DE69218686T DE69218686T2 (de) | 1991-07-23 | 1992-07-20 | Verfahren zur Herstellung von Pulvern für supraleitende keramische Materialien |
AT92112393T ATE151057T1 (de) | 1991-07-23 | 1992-07-20 | Verfahren zur herstellung von pulvern für supraleitende keramische materialien |
US08/200,535 US5369091A (en) | 1991-07-23 | 1994-02-22 | Process for the manufacture of 95% by weight single phase YCBO powder in one combustion step, comprising the use of citrate complex compounds as starting materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITRM910555A IT1249817B (it) | 1991-07-23 | 1991-07-23 | Procedimento per la produzione di polveri per materiali ceramici superconduttori |
Publications (3)
Publication Number | Publication Date |
---|---|
ITRM910555A0 ITRM910555A0 (it) | 1991-07-23 |
ITRM910555A1 ITRM910555A1 (it) | 1993-01-24 |
IT1249817B true IT1249817B (it) | 1995-03-28 |
Family
ID=11400284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITRM910555A IT1249817B (it) | 1991-07-23 | 1991-07-23 | Procedimento per la produzione di polveri per materiali ceramici superconduttori |
Country Status (5)
Country | Link |
---|---|
US (1) | US5369091A (it) |
EP (1) | EP0524586B1 (it) |
AT (1) | ATE151057T1 (it) |
DE (1) | DE69218686T2 (it) |
IT (1) | IT1249817B (it) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8029595B2 (en) * | 2008-06-02 | 2011-10-04 | Nitto Denko Corporation | Method and apparatus of producing nanoparticles using nebulized droplet |
JP5833547B2 (ja) * | 2009-06-01 | 2015-12-16 | 日東電工株式会社 | 発光セラミックおよびそれを使用する発光装置 |
US8206672B2 (en) * | 2009-07-10 | 2012-06-26 | Nitto Denko Corporation | Production of phase-pure ceramic garnet particles |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4751070A (en) * | 1986-04-15 | 1988-06-14 | Martin Marietta Corporation | Low temperature synthesis |
US4764357A (en) * | 1987-03-09 | 1988-08-16 | Akzo America Inc. | Process for producing finely divided powdery metal oxide compositions |
US4839339A (en) * | 1988-02-25 | 1989-06-13 | The United States Of America As Represented By The United States Department Of Energy | Superconductor precursor mixtures made by precipitation method |
US4900715A (en) * | 1988-02-29 | 1990-02-13 | The United States Of America As Represented By The Secretary Of The Navy | Method of preparing superconducting "orthorhomibic"-type compounds in bulk using C1 -C6 alkanoic acid salts |
US5114702A (en) * | 1988-08-30 | 1992-05-19 | Battelle Memorial Institute | Method of making metal oxide ceramic powders by using a combustible amino acid compound |
US5182255A (en) * | 1988-09-20 | 1993-01-26 | Minnesota Mining And Manufacturing Co. | Shaped and fired articles of YBa2 Cu3 O7 |
US4996189A (en) * | 1988-10-24 | 1991-02-26 | At&T Bell Laboratories | Method of producing mixed metal oxide material, and of producing a body comprising the material |
IT1230836B (it) * | 1989-03-01 | 1991-11-07 | Selenia Ind Elettroniche | Processo per la fabbricazione di materiali magnetici ceramici per applicazione a microonde |
US5066636A (en) * | 1990-08-15 | 1991-11-19 | Industrial Technology Research Institute | Citrate/ethylenediamine gel method for forming high temperature superconductors |
US5162299A (en) * | 1990-12-14 | 1992-11-10 | Hughes Aircraft Company | Preparation of superconducting oxide precursor materials by pyrolysis from concentrated nitric acid solution |
US7146640B2 (en) * | 2002-09-05 | 2006-12-05 | Exobox Technologies Corp. | Personal computer internet security system |
-
1991
- 1991-07-23 IT ITRM910555A patent/IT1249817B/it active IP Right Grant
-
1992
- 1992-07-20 EP EP92112393A patent/EP0524586B1/en not_active Expired - Lifetime
- 1992-07-20 DE DE69218686T patent/DE69218686T2/de not_active Expired - Fee Related
- 1992-07-20 AT AT92112393T patent/ATE151057T1/de not_active IP Right Cessation
-
1994
- 1994-02-22 US US08/200,535 patent/US5369091A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69218686D1 (de) | 1997-05-07 |
EP0524586A1 (en) | 1993-01-27 |
ATE151057T1 (de) | 1997-04-15 |
ITRM910555A0 (it) | 1991-07-23 |
EP0524586B1 (en) | 1997-04-02 |
US5369091A (en) | 1994-11-29 |
ITRM910555A1 (it) | 1993-01-24 |
DE69218686T2 (de) | 1997-09-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970730 |