JPS6469518A - Grinding of calcined powder for superconducting ceramics - Google Patents

Grinding of calcined powder for superconducting ceramics

Info

Publication number
JPS6469518A
JPS6469518A JP62225550A JP22555087A JPS6469518A JP S6469518 A JPS6469518 A JP S6469518A JP 62225550 A JP62225550 A JP 62225550A JP 22555087 A JP22555087 A JP 22555087A JP S6469518 A JPS6469518 A JP S6469518A
Authority
JP
Japan
Prior art keywords
powder
calcined powder
calcined
rhombic
supersonic
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.)
Granted
Application number
JP62225550A
Other languages
Japanese (ja)
Other versions
JPH0536368B2 (en
Inventor
Keisuke Kageyama
Fumiaki Kikui
Yasushi Onishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Metals Ltd
Original Assignee
Sumitomo Special Metals Co Ltd
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
Application filed by Sumitomo Special Metals Co Ltd filed Critical Sumitomo Special Metals Co Ltd
Priority to JP62225550A priority Critical patent/JPS6469518A/en
Publication of JPS6469518A publication Critical patent/JPS6469518A/en
Publication of JPH0536368B2 publication Critical patent/JPH0536368B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment

Landscapes

  • Compositions Of Oxide Ceramics (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Abstract

PURPOSE:To perform uniform pulverization of the titled calcined powder without absorbing the moisture, CO2 etc. in the ambient atmosphere, by jetting into the grinding chamber, of calcined powder for Y(La)-Ba-Cu-O-based superconducting ceramics having rhombic texture together with a supersonic oxidative gas stream of specific composition. CONSTITUTION:Calcined powder of composition MBa2Cu3O7-x (M is Y or La) having rhombic texture is coarsely ground and introduced into a raw material hopper 2. The resulting powder is then jetted into a grinding chamber 6 together with a supersonic oxidative gas stream with the CO2 content of <=0.001wt.% and dew point of <=-70 deg.C, containing >=20vol.% of O2 which is introduced through a gas feed main pipe 4, to effect pulverization into fine powder with an average size <=2mum through such collisions as between the raw powder and said gas, among powder and between the powder and the wall of said chamber, then recovering through a cyclone 7. Thus, the release of the Ba in the calcined powder can be prevented and a superconductor with narrow critical temperature range can be obtained.
JP62225550A 1987-09-09 1987-09-09 Grinding of calcined powder for superconducting ceramics Granted JPS6469518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62225550A JPS6469518A (en) 1987-09-09 1987-09-09 Grinding of calcined powder for superconducting ceramics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62225550A JPS6469518A (en) 1987-09-09 1987-09-09 Grinding of calcined powder for superconducting ceramics

Publications (2)

Publication Number Publication Date
JPS6469518A true JPS6469518A (en) 1989-03-15
JPH0536368B2 JPH0536368B2 (en) 1993-05-28

Family

ID=16831051

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62225550A Granted JPS6469518A (en) 1987-09-09 1987-09-09 Grinding of calcined powder for superconducting ceramics

Country Status (1)

Country Link
JP (1) JPS6469518A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0905104A1 (en) * 1997-09-25 1999-03-31 Aventis Research & Technologies GmbH & Co. KG Process for the production of high-Tc superconducting Bi(Pb)SrCaCuO containing powders and their use
JP2007001820A (en) * 2005-06-24 2007-01-11 Sumitomo Electric Ind Ltd Raw material aggregated particle powder, its producing method, superconducting wire material, its producing method, and superconducting instrument
US8835646B2 (en) 2005-08-25 2014-09-16 Novartis Ag Organic compounds

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0905104A1 (en) * 1997-09-25 1999-03-31 Aventis Research & Technologies GmbH & Co. KG Process for the production of high-Tc superconducting Bi(Pb)SrCaCuO containing powders and their use
JP2007001820A (en) * 2005-06-24 2007-01-11 Sumitomo Electric Ind Ltd Raw material aggregated particle powder, its producing method, superconducting wire material, its producing method, and superconducting instrument
US8835646B2 (en) 2005-08-25 2014-09-16 Novartis Ag Organic compounds

Also Published As

Publication number Publication date
JPH0536368B2 (en) 1993-05-28

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