Effect of Ag on the peritectic decomposition of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x}

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During the melt processing of superconducting wires and tapes a number of partial liquid phase regions are entered, and the type and amount of second phases that exist in the melt before cooling are critical in determining the microstructure of the final material. Decomposition pathway of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x}(Bi2212) with 0, 2, and 10 wt% Ag added was examined at 1 bar PO{sub 2} by performing SAME/EDS analysis on oil quenched samples. A variety of quaternary phase diagrams were constructed to describe the evolution of the phase assemblage with temperature. At all Ag contents, Bi2212 first undergoes a ... continued below

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5 p.

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Margulies, L.; Dennis, K.W.; Kramer, M.J. & McCallum, R.W. December 31, 1995.

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Description

During the melt processing of superconducting wires and tapes a number of partial liquid phase regions are entered, and the type and amount of second phases that exist in the melt before cooling are critical in determining the microstructure of the final material. Decomposition pathway of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x}(Bi2212) with 0, 2, and 10 wt% Ag added was examined at 1 bar PO{sub 2} by performing SAME/EDS analysis on oil quenched samples. A variety of quaternary phase diagrams were constructed to describe the evolution of the phase assemblage with temperature. At all Ag contents, Bi2212 first undergoes a peritectic reaction producing (Sr{sub 1-x}Ca{sub x}){sub 14}Cu{sub 24}O{sub 41}(14,24), Bi{sub 2}(Sr{sub 1-x}Ca{sub x}){sub 4}O{sub x}(24x), and liquid.

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5 p.

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INIS; OSTI as DE96006811

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  • 7. US/Japan workshop on high temperature superconductors, Tsukuba (Japan), 22-24 Oct 1995

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  • Other: DE96006811
  • Report No.: IS-M--848
  • Report No.: CONF-9510250--6
  • Grant Number: W-7405-ENG-82
  • Office of Scientific & Technical Information Report Number: 205131
  • Archival Resource Key: ark:/67531/metadc666669

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  • December 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Nov. 30, 2015, 7:50 p.m.

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Margulies, L.; Dennis, K.W.; Kramer, M.J. & McCallum, R.W. Effect of Ag on the peritectic decomposition of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x}, article, December 31, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc666669/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.