Reactive sintering and retrograde densification of bulk bismuth-based superconductors

Ryan L. Thayer; Sarah R. Schmidt; Stephen E. Dorris; Jeffrey W. Bullard; Michael T. Lanagan

doi:10.1111/j.1151-2916.2000.tb01562.x

Reactive sintering and retrograde densification of bulk bismuth-based superconductors

Ryan L. Thayer, Sarah R. Schmidt, Stephen E. Dorris, Jeffrey W. Bullard, Michael T. Lanagan

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

6 Scopus citations

Abstract

Densification was observed when bulk ceramic superconductors with a composition of Bi_1.8Pb_0.4Sr₂Ca₂Cu₃O_10+δ were sintered for short times (<4 h) near the incongruent melting temperature. The initial shrinkage of the powder compacts was correlated with the existence of a transient liquid phase. Retrograde densification, which is a decrease in density, occurred for longer sintering times and was attributed to changes in pore structure. The results provide direction for future processing of bulk bismuth-based superconductors and powder-in-tube tapes for the fabrication of long-length wire.

Original language	English (US)
Pages (from-to)	2365-2368
Number of pages	4
Journal	Journal of the American Ceramic Society
Volume	83
Issue number	10
DOIs	https://doi.org/10.1111/j.1151-2916.2000.tb01562.x
State	Published - 2000

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

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10.1111/j.1151-2916.2000.tb01562.x

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abstract = "Densification was observed when bulk ceramic superconductors with a composition of Bi1.8Pb0.4Sr2Ca2Cu3O10+δ were sintered for short times (<4 h) near the incongruent melting temperature. The initial shrinkage of the powder compacts was correlated with the existence of a transient liquid phase. Retrograde densification, which is a decrease in density, occurred for longer sintering times and was attributed to changes in pore structure. The results provide direction for future processing of bulk bismuth-based superconductors and powder-in-tube tapes for the fabrication of long-length wire.",

author = "Thayer, {Ryan L.} and Schmidt, {Sarah R.} and Dorris, {Stephen E.} and Bullard, {Jeffrey W.} and Lanagan, {Michael T.}",

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T1 - Reactive sintering and retrograde densification of bulk bismuth-based superconductors

AU - Thayer, Ryan L.

AU - Schmidt, Sarah R.

AU - Dorris, Stephen E.

AU - Bullard, Jeffrey W.

AU - Lanagan, Michael T.

PY - 2000

Y1 - 2000

N2 - Densification was observed when bulk ceramic superconductors with a composition of Bi1.8Pb0.4Sr2Ca2Cu3O10+δ were sintered for short times (<4 h) near the incongruent melting temperature. The initial shrinkage of the powder compacts was correlated with the existence of a transient liquid phase. Retrograde densification, which is a decrease in density, occurred for longer sintering times and was attributed to changes in pore structure. The results provide direction for future processing of bulk bismuth-based superconductors and powder-in-tube tapes for the fabrication of long-length wire.

AB - Densification was observed when bulk ceramic superconductors with a composition of Bi1.8Pb0.4Sr2Ca2Cu3O10+δ were sintered for short times (<4 h) near the incongruent melting temperature. The initial shrinkage of the powder compacts was correlated with the existence of a transient liquid phase. Retrograde densification, which is a decrease in density, occurred for longer sintering times and was attributed to changes in pore structure. The results provide direction for future processing of bulk bismuth-based superconductors and powder-in-tube tapes for the fabrication of long-length wire.

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Reactive sintering and retrograde densification of bulk bismuth-based superconductors

Abstract

All Science Journal Classification (ASJC) codes

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