Rapid formation of the Bi{sub 2{minus}x}Pb{sub x}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub y} high {Tc}-phase, using spray-dried nitrate precursor powders

Journal Article · Thu Aug 01 00:00:00 EDT 1996 · Materials Research Bulletin

DOI:https://doi.org/10.1016/S0025-5408(96)00060-8· OSTI ID:367310

Van Driessche, I; Mouton, R; Hoste, S ^[1]

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1. Ghent Univ. (Belgium)

This study describes the use of spray-dried nitrate precursor powders in the synthesis of Bi-2223 high {Tc}-superconductors. The decomposition of the precursor powder is studied using TGA/DTA, XRD, IR, and nitrogen analyses. The particle size is determined using SEM. The low decomposition temperature of the nitrates ({approximately}600 C) and the small particle size of the spray dried powder ({approximately}3{center_dot}10{sup {minus}6} m), resulting in a lowering of the calcination temperature and a shortening of the sinter time, enabled the authors to synthesize a > 96% pure Bi-2223 phase (from XRD peak intensities) after a thermal process of 5h at 650 C and 60 h at 855 C.

• OSTI ID: 367310
• Journal Information: Materials Research Bulletin, Vol. 31, Issue 8; Other Information: PBD: Aug 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
SYNTHESIS
LEAD OXIDES
STRONTIUM OXIDES
CALCIUM OXIDES
COPPER OXIDES
STOICHIOMETRY
NITRATES
AQUEOUS SOLUTIONS
SPRAY DRYING
SCANNING ELECTRON MICROSCOPY
X-RAY DIFFRACTION
PYROLYSIS
THERMAL GRAVIMETRIC ANALYSIS
DIFFERENTIAL THERMAL ANALYSIS
INFRARED SPECTRA
SUPERCONDUCTIVITY