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JPS6428269A - Oxide superconducting composition - Google Patents

Oxide superconducting composition

Info

Publication number
JPS6428269A
JPS6428269A JP62185816A JP18581687A JPS6428269A JP S6428269 A JPS6428269 A JP S6428269A JP 62185816 A JP62185816 A JP 62185816A JP 18581687 A JP18581687 A JP 18581687A JP S6428269 A JPS6428269 A JP S6428269A
Authority
JP
Japan
Prior art keywords
composition
superconducting
sintering
porosity
oxide superconducting
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.)
Pending
Application number
JP62185816A
Other languages
Japanese (ja)
Inventor
Yukinobu Nakabayashi
Junji Tabuchi
Atsushi Ochi
Kazuaki Uchiumi
Yoshimi Kubo
Tsutomu Yoshitake
Hitoshi Igarashi
Masatomo Yonezawa
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP62185816A priority Critical patent/JPS6428269A/en
Publication of JPS6428269A publication Critical patent/JPS6428269A/en
Pending 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

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

Abstract

PURPOSE:To obtain a superconducting composition capable of sintering a porcelain having small porosity at lower temperature, by using a Sr-Nd-Ag-Cu-O based material having a specific composition range as a component. CONSTITUTION:A superconducting material in the range satisfying the equations 0.3<=x<=0.85 and 0.01<=y<=0.10 in the oxide superconducting composition expressed by formula I. In an oxide superconducting material, especially conventional Ba-Y-Cu-O based material, the porosity of product obtained by calcining the material at 900 deg.C for 12min and sintering the calcined material at 1,000 deg.C is 20%. In the other hand, in the aimed superconducting composition expressed by formula II, extremely good ceramic having 5% porosity are obtained by calcining the composition at 850 deg.C for 12hr and sintering the calcined composition at 900 deg.C and confirmed as a superconductor having high critical temperature from measurement of conductivity. The aimed composition has high practicality as a superconducting material, because the composition provides a dense porcelain at low temperature, compared with a conventional material and exhibits high critical temperature.
JP62185816A 1987-07-24 1987-07-24 Oxide superconducting composition Pending JPS6428269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62185816A JPS6428269A (en) 1987-07-24 1987-07-24 Oxide superconducting composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62185816A JPS6428269A (en) 1987-07-24 1987-07-24 Oxide superconducting composition

Publications (1)

Publication Number Publication Date
JPS6428269A true JPS6428269A (en) 1989-01-30

Family

ID=16177382

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62185816A Pending JPS6428269A (en) 1987-07-24 1987-07-24 Oxide superconducting composition

Country Status (1)

Country Link
JP (1) JPS6428269A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008139950A1 (en) 2007-05-07 2008-11-20 Mitsubishi Heavy Industries, Ltd. Valve device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008139950A1 (en) 2007-05-07 2008-11-20 Mitsubishi Heavy Industries, Ltd. Valve device
US8235357B2 (en) 2007-05-07 2012-08-07 Mitsubishi Heavy Industries, Ltd. Valve gear having a valve stem and a valve bush

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