NO943685L - Massive parts of high temperature superconductor material - Google Patents

Massive parts of high temperature superconductor material

Info

Publication number
NO943685L
NO943685L NO943685A NO943685A NO943685L NO 943685 L NO943685 L NO 943685L NO 943685 A NO943685 A NO 943685A NO 943685 A NO943685 A NO 943685A NO 943685 L NO943685 L NO 943685L
Authority
NO
Norway
Prior art keywords
strontium
molds
melt
high temperature
superconductor material
Prior art date
Application number
NO943685A
Other languages
Norwegian (no)
Other versions
NO943685D0 (en
Inventor
Joachim Bock
Steffen Elschner
Original Assignee
Hoechst Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE4333737A external-priority patent/DE4333737A1/en
Priority claimed from DE4402991A external-priority patent/DE4402991A1/en
Application filed by Hoechst Ag filed Critical Hoechst Ag
Publication of NO943685D0 publication Critical patent/NO943685D0/en
Publication of NO943685L publication Critical patent/NO943685L/en

Links

Classifications

    • 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
    • C04B35/4521—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 bismuth oxide
    • 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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • 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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/653—Processes involving a melting step
    • 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
    • H10N60/01—Manufacture or treatment
    • H10N60/0268—Manufacture or treatment of devices comprising copper oxide
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
    • C04B2235/661—Multi-step sintering
    • C04B2235/662—Annealing after sintering

Abstract

Det er beskrevet massive deler av høytemperatur- supraleder-materlale bestående av oksydene av bismut, strontium, kalsium og kobber samt av sulfatene av strontium og/eller barium. Disse massive delene oppviser en forhøyet bæreevne for strøm, som forårsakes ved en foretrukket orientering av krystalllttene, hvorved den krystallograflske c-aksen står loddrett på temperaturgradlenten under størkningen fra smelten.. For fremstilling av disse massive delene støper man en homogen smelte av oksydene av bismut, strontium, kalsium og kobber samt av .sulfatene av strontium og/eller barium ved temperaturer på 900 til 1300'C l kokiller, lar smelten langsomt størkne l disse og gløder deretter de fra kokillene uttatte massive delene ved 700 til 900'C l oksygenholdlg atmosfære. Derved foregår støpingen av den homogene smelten l kokiller med minst to parallelle vegger, hvorved det i de massive delene, såvel etter størkningen som også etter deres glødnlng , oppstår en krystallograflsk foretrukket orientering av krystallittene.Massive portions of the high temperature superconductor material comprising the oxides of bismuth, strontium, calcium and copper as well as of the sulphates of strontium and / or barium have been described. These massive portions exhibit an increased current carrying capacity caused by a preferred orientation of the crystals, whereby the crystallographic c-axis is perpendicular to the temperature gradient during solidification from the melt. To produce these massive portions, a homogeneous melt of the oxides of bismuth is cast. , strontium, calcium and copper, and of the strontium and / or barium sulphates at temperatures of 900 to 1300 ° C in molds, slowly melt the solid in these and then anneal the solid parts extracted from the molds at 700 to 900 ° C in oxygen. atmosphere. Thereby, the casting of the homogeneous melt takes place in molds with at least two parallel walls, whereby in the solid parts, both after solidification and also after their annealing, a crystallographically preferred orientation of the crystallites occurs.

NO943685A 1993-10-04 1994-10-03 Massive parts of high temperature superconductor material NO943685L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4333737A DE4333737A1 (en) 1993-10-04 1993-10-04 Solid, textured parts of high-temperature superconductor material
DE4402991A DE4402991A1 (en) 1994-02-01 1994-02-01 Superconducting parts used in magnets

Publications (2)

Publication Number Publication Date
NO943685D0 NO943685D0 (en) 1994-10-03
NO943685L true NO943685L (en) 1995-04-05

Family

ID=25930134

Family Applications (1)

Application Number Title Priority Date Filing Date
NO943685A NO943685L (en) 1993-10-04 1994-10-03 Massive parts of high temperature superconductor material

Country Status (6)

Country Link
EP (1) EP0646554A1 (en)
JP (1) JPH07192545A (en)
KR (1) KR950011367A (en)
CN (1) CN1111403A (en)
CA (1) CA2131944A1 (en)
NO (1) NO943685L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1317792C (en) * 2003-02-25 2007-05-23 富士通株式会社 Superconductor transmission line
ATE387743T1 (en) * 2003-10-15 2008-03-15 Nexans SUPERCONDUCTIVE CURRENT LIMITER WITH MAGNETIC FIELD ASSISTED QUENCH
JP5008112B2 (en) * 2005-05-30 2012-08-22 独立行政法人産業技術総合研究所 Radial collective conductor
CN115745595A (en) * 2021-05-12 2023-03-07 张建军 High-temperature electronic superconductor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3830092A1 (en) * 1988-09-03 1990-03-15 Hoechst Ag METHOD FOR THE PRODUCTION OF A HIGH-TEMPERATURE SUPERCONDUCTOR AND MOLDED BODY THEREOF
DE4124823A1 (en) * 1991-07-26 1993-01-28 Hoechst Ag HIGH TEMPERATURE SUPER LADDER AND METHOD FOR THE PRODUCTION THEREOF
DE4218950A1 (en) * 1992-06-10 1993-12-16 Hoechst Ag Process for producing a high-temperature superconductor and molded body formed therefrom

Also Published As

Publication number Publication date
KR950011367A (en) 1995-05-15
EP0646554A1 (en) 1995-04-05
CN1111403A (en) 1995-11-08
NO943685D0 (en) 1994-10-03
JPH07192545A (en) 1995-07-28
CA2131944A1 (en) 1995-04-05

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