Rapid formation of phase-clean 110 K (Bi-2223) powders derived via freeze-drying process

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Description

This invention relates to an improved process of preparing Bi-Sr-Ca-Cu-O (BSCCO) powders, and more particularly, to a process for preparing BSCCO powders that utilize freeze-drying. The process generally includes splat freezing a nitrate solution of Bi, Pb, Sr, Ca, and Cu to form flakes of the solution; grinding the flakes to form a powder; freeze-drying the frozen powder; heating the powder to form dry green precursor powders; denitrating the powders; and heating the powders to form phase-clean Bi-2223 powders.

Physical Description

25 p.

Creation Information

Balachandran, U.; Krishnaraj, P.; Eror, N.G. & Lelovic, M. December 31, 1994.

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This patent is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 21 times , with 5 in the last month . More information about this patent can be viewed below.

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Description

This invention relates to an improved process of preparing Bi-Sr-Ca-Cu-O (BSCCO) powders, and more particularly, to a process for preparing BSCCO powders that utilize freeze-drying. The process generally includes splat freezing a nitrate solution of Bi, Pb, Sr, Ca, and Cu to form flakes of the solution; grinding the flakes to form a powder; freeze-drying the frozen powder; heating the powder to form dry green precursor powders; denitrating the powders; and heating the powders to form phase-clean Bi-2223 powders.

Physical Description

25 p.

Notes

OSTI as DE97003558

Source

  • Other Information: PBD: 1994

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  • Other: DE97003558
  • Report No.: PATENTS-US--A8315452
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 450073
  • Archival Resource Key: ark:/67531/metadc680961

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • December 31, 1994

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

Description Last Updated

  • Dec. 14, 2015, 6:37 p.m.

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Citations, Rights, Re-Use

Balachandran, U.; Krishnaraj, P.; Eror, N.G. & Lelovic, M. Rapid formation of phase-clean 110 K (Bi-2223) powders derived via freeze-drying process, patent, December 31, 1994; Illinois. (digital.library.unt.edu/ark:/67531/metadc680961/: accessed December 10, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.