Stability measurement of double-side-surface-coated Bi-2212 tape conductors in water environment

J. P. Zhou; J. T. McDevitt; D. W. Hazelton

doi:10.1088/0953-2048/12/9/305

Stability measurement of double-side-surface-coated Bi-2212 tape conductors in water environment

J. P. Zhou, J. T. McDevitt, D. W. Hazelton

Research output: Contribution to journal › Article › peer-review

Abstract

The stability of double-side-coated Bi₂Sr₂CaCu₂O₈ (Bi-2212) tapes on Ag substrates in a water environment has been studied. A phase analysis of the as-processed tape conductors was performed and indicated that aqueous precipitates are formed in the tapes exposed to aerated water solution. The nominal composition of the precipitates was found to be Sr_1-xCa_xCuO₂ (x≈0.4). This phase is present in the tapes before the corrosive damage ensues. In order to evaluate the stability properties of the Sr_0.6Ca_0.4CuO₂ phase in a water environment, the pure compound was synthesized and treated under the same conditions as the tapes. Studies reveal that similar corrosion occurs in the Sr_0.6Ca_0.4CuO₂ phase. Thus, the presence of this impurity phase, which appears upon heat treatment of the tape assemblies, is found to be an important factor in the degradation behaviour of the Bi-2212 tape conductors.

Original language	English (US)
Pages (from-to)	601-605
Number of pages	5
Journal	Superconductor Science and Technology
Volume	12
Issue number	9
DOIs	https://doi.org/10.1088/0953-2048/12/9/305
State	Published - Sep 1999

ASJC Scopus subject areas

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

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10.1088/0953-2048/12/9/305

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title = "Stability measurement of double-side-surface-coated Bi-2212 tape conductors in water environment",

abstract = "The stability of double-side-coated Bi2Sr2CaCu2O8 (Bi-2212) tapes on Ag substrates in a water environment has been studied. A phase analysis of the as-processed tape conductors was performed and indicated that aqueous precipitates are formed in the tapes exposed to aerated water solution. The nominal composition of the precipitates was found to be Sr1-xCaxCuO2 (x≈0.4). This phase is present in the tapes before the corrosive damage ensues. In order to evaluate the stability properties of the Sr0.6Ca0.4CuO2 phase in a water environment, the pure compound was synthesized and treated under the same conditions as the tapes. Studies reveal that similar corrosion occurs in the Sr0.6Ca0.4CuO2 phase. Thus, the presence of this impurity phase, which appears upon heat treatment of the tape assemblies, is found to be an important factor in the degradation behaviour of the Bi-2212 tape conductors.",

author = "Zhou, {J. P.} and McDevitt, {J. T.} and Hazelton, {D. W.}",

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AU - McDevitt, J. T.

AU - Hazelton, D. W.

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Y1 - 1999/9

N2 - The stability of double-side-coated Bi2Sr2CaCu2O8 (Bi-2212) tapes on Ag substrates in a water environment has been studied. A phase analysis of the as-processed tape conductors was performed and indicated that aqueous precipitates are formed in the tapes exposed to aerated water solution. The nominal composition of the precipitates was found to be Sr1-xCaxCuO2 (x≈0.4). This phase is present in the tapes before the corrosive damage ensues. In order to evaluate the stability properties of the Sr0.6Ca0.4CuO2 phase in a water environment, the pure compound was synthesized and treated under the same conditions as the tapes. Studies reveal that similar corrosion occurs in the Sr0.6Ca0.4CuO2 phase. Thus, the presence of this impurity phase, which appears upon heat treatment of the tape assemblies, is found to be an important factor in the degradation behaviour of the Bi-2212 tape conductors.

AB - The stability of double-side-coated Bi2Sr2CaCu2O8 (Bi-2212) tapes on Ag substrates in a water environment has been studied. A phase analysis of the as-processed tape conductors was performed and indicated that aqueous precipitates are formed in the tapes exposed to aerated water solution. The nominal composition of the precipitates was found to be Sr1-xCaxCuO2 (x≈0.4). This phase is present in the tapes before the corrosive damage ensues. In order to evaluate the stability properties of the Sr0.6Ca0.4CuO2 phase in a water environment, the pure compound was synthesized and treated under the same conditions as the tapes. Studies reveal that similar corrosion occurs in the Sr0.6Ca0.4CuO2 phase. Thus, the presence of this impurity phase, which appears upon heat treatment of the tape assemblies, is found to be an important factor in the degradation behaviour of the Bi-2212 tape conductors.

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Stability measurement of double-side-surface-coated Bi-2212 tape conductors in water environment

Abstract

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