Sintering and Hot Isostatic Pressing of Bi₂Sr₂CaCu₂O_x

Conference · Tue Jan 01 00:00:00 EST 1991

OSTI ID:5901133

Nash, Alexis S. ^[1]; Nash, P. ^[2]; Poeppel, R. B. ^[3]; Goretta, K. C. ^[3]

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1. Marquette Univ., Milwaukee, WI (United States)
2. Illinois Institute of Technology, Chicago, IL (United States)
3. Argonne National Laboratory (ANL), Argonne, IL (United States)

The Bi₂Sr₂CaCu₂O_x phase was synthesized by solid-state reaction of oxides and carbonates. Initial compositions of Bi:Sr:Ca:Cu were 4:3:3:6 and 2:1.7:1:2. Pellets of the pure powder and powder containing 2.5, 5, or 15 wt.% Ag were cold-pressed and either sintered or hot isostatically pressed (HIPped). For HIPping, the pellets were encased in thin Ag sheets, canned in steel, and pressed at 105 MPa in argon at 800 or 850°C. HIPping produced dense specimens, but sintering did not. HIPping induced very little decomposition of the Bi₂Sr₂CaCu₂O_x, but a post-HIP anneal was needed to raise the transition temperature above 80 K. The Ag additions appeared to minimize microcracking during HIPping at 800°C. Little microcracking was evident in any of the specimens HIPped at 850°C.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5901133
• Report Number(s): ANL/CP-71063; CONF-910212-4; ON: DE91010797
• Resource Relation: Conference: Symposium High Temperature Superconducting Compounds III, Annual Meeting of the Metallurgical Society, New Orleans, LA (United States), 17-21 Feb 1991
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
SINTERING
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
COPPER OXIDES
MAGNETIZATION
STRONTIUM COMPOUNDS
TEMPERATURE DEPENDENCE
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
DIFFRACTION
FABRICATION
OXIDES
OXYGEN COMPOUNDS
SCATTERING
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication