Identification and quantification of phases formed during the processing of (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x}/Ag composite conductors

Conference · Thu Aug 01 04:00:00 EDT 1996

OSTI ID:383045

Merchant, N N; Fischer, A K; Maroni, V A ^[1]; Carter, W L; Parrella, R D ^[2]

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1. Argonne National Lab., IL (United States)
2. American Superconductor Corp., Westborough, MA (United States)

Scanning electron microscopy, energy dispersive x-ray analysis, (including x-ray dot mapping), x-ray diffraction and computer based image analysis have been used to study non-superconducting secondary phases that evolve during the processing of (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x}/Ag composite superconductors. These investigations have provided new information and insights about specific alkaline earth cuprates (AECs) and lead-rich phases. We can conclusively identify (Ca,Sr){sub 2}CuO{sub 3}, (Ca,Sr){sub 14}(Cu{sub 24})O{sub 41}, and CuO phases, the alkaline earth plumbates, and a (Bi,Pb)-Sr-Ca-Cu-O 3221 phase with a wide range of Pb/Bi ratios. These techniques also help in differentiating voids from secondary phases and alkaline earth plumbates from the lead-rich 3221 phase.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 383045
• Report Number(s): ANL/CMT/CP--88969; CONF-960850--10; ON: DE96013956
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
BISMUTH OXIDES
CALCIUM OXIDES
COMPOSITE MATERIALS
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
LEAD OXIDES
PHASE STUDIES
PROCESSING
QUANTITATIVE CHEMICAL ANALYSIS
SCANNING ELECTRON MICROSCOPY
SILVER
STRONTIUM OXIDES
X-RAY DIFFRACTION