Liquid phase sintering and microstructure development of Ag-clad Tl-1223 superconductor

M. R. Hagen; D. S. Kupperman; K. C. Goretta; M. T. Lanagan

doi:10.1088/0953-2048/9/10/012

Liquid phase sintering and microstructure development of Ag-clad Tl-1223 superconductor

M. R. Hagen, D. S. Kupperman, K. C. Goretta, M. T. Lanagan

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Abstract

The phase evolution and electrical properties of Tl-1223 tapes were explored near the incongruent melt temperature. Liquid phase evolution was monitored as a function of time and temperature by an acoustic velocity monitor. The phase development kinetics for Tl-based superconductors are more than one order of magnitude faster than the kinetics of Bi-based superconductors. Three separate powder mixtures (Tl₂O₃ + Ba₂Ca₂Cu₃O₇, TlBa₂CaCu₂O_x + CaCuO₂, and TlBa₂Ca₂Cu₃O_y) were used in powder-in-tube processing. Oxygen partial pressure had a significant effect on melt behaviour and microstructure development.

Original language	English (US)
Pages (from-to)	898-904
Number of pages	7
Journal	Superconductor Science and Technology
Volume	9
Issue number	10
DOIs	https://doi.org/10.1088/0953-2048/9/10/012
State	Published - Oct 1 1996

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/9/10/012

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title = "Liquid phase sintering and microstructure development of Ag-clad Tl-1223 superconductor",

abstract = "The phase evolution and electrical properties of Tl-1223 tapes were explored near the incongruent melt temperature. Liquid phase evolution was monitored as a function of time and temperature by an acoustic velocity monitor. The phase development kinetics for Tl-based superconductors are more than one order of magnitude faster than the kinetics of Bi-based superconductors. Three separate powder mixtures (Tl2O3 + Ba2Ca2Cu3O7, TlBa2CaCu2Ox + CaCuO2, and TlBa2Ca2Cu3Oy) were used in powder-in-tube processing. Oxygen partial pressure had a significant effect on melt behaviour and microstructure development.",

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AU - Hagen, M. R.

AU - Kupperman, D. S.

AU - Goretta, K. C.

AU - Lanagan, M. T.

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AB - The phase evolution and electrical properties of Tl-1223 tapes were explored near the incongruent melt temperature. Liquid phase evolution was monitored as a function of time and temperature by an acoustic velocity monitor. The phase development kinetics for Tl-based superconductors are more than one order of magnitude faster than the kinetics of Bi-based superconductors. Three separate powder mixtures (Tl2O3 + Ba2Ca2Cu3O7, TlBa2CaCu2Ox + CaCuO2, and TlBa2Ca2Cu3Oy) were used in powder-in-tube processing. Oxygen partial pressure had a significant effect on melt behaviour and microstructure development.

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Liquid phase sintering and microstructure development of Ag-clad Tl-1223 superconductor

Abstract

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