KR890702262A - Improved manufacturing method of 90k superconductor - Google Patents

Improved manufacturing method of 90k superconductor

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Publication number
KR890702262A
KR890702262A KR1019890700228A KR890700228A KR890702262A KR 890702262 A KR890702262 A KR 890702262A KR 1019890700228 A KR1019890700228 A KR 1019890700228A KR 890700228 A KR890700228 A KR 890700228A KR 890702262 A KR890702262 A KR 890702262A
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KR
South Korea
Prior art keywords
molded article
made according
powder
article made
mba
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KR1019890700228A
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Korean (ko)
Inventor
토랄디 칼민
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원본미기재
이 아이 듀우판 디 네모아 앤드 캄파니
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Publication of KR890702262A publication Critical patent/KR890702262A/en

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    • 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
    • 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
    • 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
    • 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
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/76—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by a space-group or by other symmetry indications

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

내용 없음No content

Description

90k 초전도체의 개선된 제조방법Improved manufacturing method of 90k superconductor

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (25)

(a) M : Ba : Cu 의 원자 비율이 약 1 : 2 : 3인 M2O3, Ba(OH)2·8H2O 및 CuO 분말들을 혼합하거나, (b) M : Ba : Cu 의 원자 비율이 약 1 : 2 : 3인 M(NO3)2, Ba(NO3)2및 Cu(NO3)2의 수성 용액을 형성시키고, 결과 생성된 용액에 충분한 시트르산 일수화물을 첨가하여 존재하는 금속들을 이들의 상응하는 시트르산 염으로 전환시키고, 결과 생성된 용액을 분무 건조시켜 전구체 분말을 얻음으로써 제조되는 전구체 분말을 산소-함유 분위기내, 약 875℃-약 950℃에서 충분한 시간동안 가열하여 MBa2Cu3Oy(여기에서 y는 약 6.0 - 약 6.4임)를 형성시키고 ; 충분한 시간동안 냉각시키면서 산소-함유 분위기 내에서 MBa2Cu3Oy를 유지시켜 원하는 생성물을 얻는 것으로 근본적으로 이루어지는 방법으로서, 일반식 MBa2Cu3Ox(여기에서 M은 Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb 및 Lu로 이루어진 군으로부터 선택되고 ; x는 약 6.5 - 약 7.0임)를 갖고 ; 약 90K의 초전도 전이 온도를 갖는 초전도 조성물의 개선된 제조 방법.(a) M 2 O 3 , Ba (OH) 2 .8H 2 O and CuO powders having an atomic ratio of M: Ba: Cu of about 1: 2: 3, or (b) atoms of M: Ba: Cu An aqueous solution of M (NO 3 ) 2 , Ba (NO 3 ) 2 and Cu (NO 3 ) 2 with a ratio of about 1: 2: 3 is formed and sufficient citric acid monohydrate is added to the resulting solution to The precursor powders prepared by converting the metals to their corresponding citric acid salts and spray drying the resulting solution to obtain precursor powders were heated in an oxygen-containing atmosphere at about 875 ° C. to about 950 ° C. for a sufficient time to leave MBa. To form 2 Cu 3 O y , wherein y is about 6.0 to about 6.4; A method essentially consisting of maintaining MBa 2 Cu 3 O y in an oxygen-containing atmosphere while cooling for a sufficient time to obtain the desired product, wherein the general formula MBa 2 Cu 3 O x where M is Y, Nd, Sm, Is selected from the group consisting of Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; x is about 6.5 to about 7.0; An improved method of making a superconducting composition having a superconducting transition temperature of about 90K. 제 1 항에 있어서, 전구체 분말이 M2O3, Ba(OH)2·8H2O 및 CuO 분말을 혼합함으로써 제조되는 방법.The method of claim 1, wherein the precursor powder is prepared by mixing M 2 O 3 , Ba (OH) 2 · 8H 2 O and CuO powder. 제 2 항에 있어서, 전구체 분말이 가열에 앞서 원하는 형태로 프레스되는 방법.The method of claim 2 wherein the precursor powder is pressed into the desired form prior to heating. 제 2 항에 있어서, 전구체 혼합물이 약 900℃ - 약 950℃에서 가열되는 방법.The method of claim 2, wherein the precursor mixture is heated at about 900 ° C. to about 950 ° C. 4. 제 3 항에 있어서, 전구체 혼합물이 약 900℃ - 약 950℃에서 가열되는 방법.The method of claim 3, wherein the precursor mixture is heated at about 900 ° C. to about 950 ° C. 5. 제 4 항에 있어서, X가 약 6.8 - 약 7.0 인 방법.The method of claim 4, wherein X is about 6.8 to about 7.0. 제 5 항에 있어서, X가 약 6.8 - 약 7.0 인 방법.The method of claim 5, wherein X is about 6.8 to about 7.0. 제 6 항에 있어서, M이 Y인 방법.7. The method of claim 6 wherein M is Y. 제 7 항에 있어서, M이 Y인 방법.8. The method of claim 7, wherein M is Y. 제 3 항의 방법에 따라 제조되는 성형된 제품.A molded article made according to the method of claim 3. 제 5 항의 방법에 따라 제조되는 성형된 제품.A molded article made according to the method of claim 5. 제 7 항의 방법에 따라 제조되는 성형된 제품.A molded article made according to the method of claim 7. 제 9 항의 방법에 따라 제조되는 성형된 제품.A molded article made according to the method of claim 9. 제 1 항에 있어서, 전구체 분말이 M : Ba : Cu 의 원자 비율이 약 1 : 2 : 3인 M(NO3)3, Ba(NO3)2및 Cu(NO3)2의 수성 용액을 형성시키고, 결과 생성된 용액에 충분한 시트르산 일수화물을 첨가하여 존재하는 금속들을 이들의 상응하는 시트르산 염으로 전환시키고, 결과 생성된 용액을 분무 건조시킴으로써 제조되는 방법.The method of claim 1, wherein the precursor powder forms an aqueous solution of M (NO 3 ) 3 , Ba (NO 3 ) 2 and Cu (NO 3 ) 2 with an atomic ratio of M: Ba: Cu of about 1: 2: 3. And adding sufficient citric acid monohydrate to the resulting solution to convert the present metals to their corresponding citric acid salts and spray drying the resulting solution. 제 14 항에 있어서, 전구체 분말이 약 900℃ - 약 950℃에서 가열되는 방법.The method of claim 14, wherein the precursor powder is heated at about 900 ° C. to about 950 ° C. 16. 제 15 항에 있어서, X가 약 6.8 - 약 7.0 인 방법.The method of claim 15, wherein X is about 6.8 to about 7.0. 제 16 항에 있어서, M이 Y인 방법.17. The method of claim 16, wherein M is Y. 제 14 항에 있어서, MBa2Cu3Ox분말이 원하는 형태로 프레스되고 소결되는 방법.The method of claim 14, wherein the MBa 2 Cu 3 O x powder is pressed and sintered in the desired form. 제 15 항에 있어서, MBa2Cu3Ox분말이 원하는 형태로 프레스되고 소결되는 방법.The method of claim 15, wherein the MBa 2 Cu 3 O x powder is pressed and sintered in the desired form. 제 16 항에 있어서, MBa2Cu3Ox분말이 원하는 형태로 프레스되고 소결되는 방법.The method of claim 16, wherein the MBa 2 Cu 3 O x powder is pressed and sintered in the desired form. 제 17 항에 있어서, MBa2Cu3Ox분말이 원하는 형태로 프레스되고 소결되는 방법.18. The method of claim 17, wherein the MBa 2 Cu 3 O x powder is pressed and sintered in the desired form. 제 18 항의 방법에 따라 제조되는 성형된 제품.A molded article made according to the method of claim 18. 제 19 항의 방법에 따라 제조되는 성형된 제품.A molded article made according to the method of claim 19. 제 20 항의 방법에 따라 제조되는 성형된 제품.A molded article made according to the method of claim 20. 제 21 항의 방법에 따라 제조되는 성형된 제품.A molded article made according to the method of claim 21. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890700228A 1987-06-09 1988-06-08 Improved manufacturing method of 90k superconductor KR890702262A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US5984787A 1987-06-09 1987-06-09
US059847 1987-06-09
PCT/US1988/002025 WO1988010515A1 (en) 1987-06-09 1988-06-08 Improved process for making 90 k superconductors

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KR890702262A true KR890702262A (en) 1989-12-23

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EP (1) EP0366721A4 (en)
JP (1) JPH02503789A (en)
KR (1) KR890702262A (en)
AU (1) AU608886B2 (en)
HU (1) HUT52646A (en)
WO (1) WO1988010515A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4898851A (en) * 1987-06-22 1990-02-06 E. I. Du Pont De Nemours And Company Process for making 90 k superconductors using a spray dried oxalate precursor
US4861753A (en) * 1987-06-22 1989-08-29 E. I. Du Pont De Nemours And Company Process for making superconductors using barium nitrate
BR8804615A (en) * 1987-09-11 1989-04-18 Grace W R & Co PRODUCTION PROCESS OF A SUPERCONDUCTIVE CERAMIC SOLID CONTAINED BY METALLIC OXIDES; METAL OXIDE COMPOSITION; AND SPHEROID PARTICLES
US5149682A (en) * 1987-09-11 1992-09-22 W. R. Grace & Co. -Conn. Manufacturing method for superconducting ceramics and products thereof
US5006504A (en) * 1989-08-28 1991-04-09 At&T Bell Laboratories Preparing superconducting ceramic materials
IT1248618B (en) * 1990-08-01 1995-01-21 Sviluppo Materiali Spa DEVICE FOR THE CONTINUOUS PRODUCTION OF SUPERCONDUCTIVE CERAMICS

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US3330697A (en) * 1963-08-26 1967-07-11 Sprague Electric Co Method of preparing lead and alkaline earth titanates and niobates and coating method using the same to form a capacitor
US4636378A (en) * 1985-06-11 1987-01-13 Hughes Aircraft Company Method of preparation of perovskite-type compounds
US4661282A (en) * 1985-06-24 1987-04-28 The Dow Chemical Company Inorganic anion exchangers and preparation thereof
EP0275343A1 (en) * 1987-01-23 1988-07-27 International Business Machines Corporation New superconductive compounds of the K2NiF4 structural type having a high transition temperature, and method for fabricating same
NL8701787A (en) * 1987-07-29 1989-02-16 Philips Nv METHOD FOR MANUFACTURING OXIDICALLY SUPER CONDUCTIVE MATERIAL
BR8804615A (en) * 1987-09-11 1989-04-18 Grace W R & Co PRODUCTION PROCESS OF A SUPERCONDUCTIVE CERAMIC SOLID CONTAINED BY METALLIC OXIDES; METAL OXIDE COMPOSITION; AND SPHEROID PARTICLES

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JPH02503789A (en) 1990-11-08
AU608886B2 (en) 1991-04-18
WO1988010515A1 (en) 1988-12-29
AU2129988A (en) 1989-01-19
EP0366721A1 (en) 1990-05-09
EP0366721A4 (en) 1991-04-24
HUT52646A (en) 1990-07-28

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