Processing and fabrication techniques for bulk superconductors: A critical review

Jin, Sheng; Graebner, J. E.

doi:10.1016/0921-5107(91)90001-c

Cited by 98 publications

(7 citation statements)

References 80 publications

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“…Thus, the properties of these wires and tapes were determined by weak links, not flux pinning. The Jc values of the T1-Ba-Ca-Cu-O/Ag wires and tapes were below those quoted for melt-textured materials or Ag-clad (Bi,Pb)2Sr2Ca2Cu3Ox tapes [7,[16][17][18]. Relatively little fabrication work has been done to date, and properties are expected to improve.…”

Section: Resultsmentioning

confidence: 97%

“…In fact, the T1Ba2Ca2Cu3Ox (1223) compound has inherent flux-pi:.ning characteristics superior to those of all high-temperature superconductors other than YBa2Cu3Ox [2]. It has proved to be very difficult to fabricate wires from YBa2Cu3Ox that do not suffer from weak-link problems [6,7]. It is hoped that the 1223 and T12Ba2Ca2Cu3Ox (2223) compounds will be easier to work into wires and tapes than is YBa2Cu3Ox.…”

mentioning

confidence: 99%

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Processing and Properties of Silver-Clad Tl-Ba-Ca-Cu-O Wires and Tapes

Goretta

Lanagan

et al. 1992

MRS Proc.

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Section: Resultsmentioning

confidence: 97%

mentioning

confidence: 99%

Processing and Properties of Silver-Clad Tl-Ba-Ca-Cu-O Wires and Tapes

Goretta

Lanagan

et al. 1992

MRS Proc.

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“…Processing of high-Tc superconductors in Ag tubes has produced several reports of Jc values greater than 104 A/cm 2 at 77 K and greater than 105 A/cm 2 at 4.2 K (Jin and Graebner, 1991). Advantages of powder-in-tube processing include high green densities, which obviate the use of high sintering temperatures; protection of the superconductor from atmospheric exposure; and possible stabil_ation of the superconducter by the resultant metallic sheath.…”

Section: Composite Conductorsmentioning

confidence: 99%

Practical superconductor development for electrical power applications

Goretta

1992

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Development of useful high-critical-temperature (high-Tc) superconductors requires synthesis of superconducting compounds; fabrication of wires, tapes, and films from these compounds; production of composite structures that incorporate stabilizers or insulators; and design and testing of efficient components. This report describes the technical progress of research and development efforts aimed at producing superconducting components that are based on the Y-Ba-Cu, Bi-Sr-Ca-Cu, Bi-Pb-Sr-Ca-Cu, and (TI,Pbl-(Ba,Sr)-Ca-Cu oxide systems. Topics discussed are synthesis and heat treatment of hlgh-Tc superconductors, formation of monolithic and composite wires and tapes, superconductor/metal connectors, characterization of structures and superconducting and mechanical properties, fabrication and properties of thin films, and development of prototype components. Collaborations with industry and academia are documented. vii

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“…1,2 The YBaCuO system has received the most intense study, as this material has shown promise for the application of both thin film and bulk materials. 1,2 The YBaCuO system has received the most intense study, as this material has shown promise for the application of both thin film and bulk materials.…”

Section: Introductionmentioning

confidence: 99%

High-temperature phase relationships for Y_xNd_1–xBa₂Cu₃O_y(0.7 ≤ x ≤ 1.0) superconductors via containerless processing

et al. 1999

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Drop-tube experiments have been performed on Y x Nd 1−x Ba 2 Cu 3 O y (0.7 ഛ x ഛ 1.0) to understand the effects of partial substitutions of Nd for Y on the phase relationships in these systems at elevated temperatures. Powders 50-100 m in diameter were processed in pure O 2 at furnace temperatures of 1575-1800°C, every 25°C. The resulting samples were examined microstructurally by scanning electron microscopy, energy dispersive spectroscopy, and optical microscopy. Powder x-ray diffraction was performed for phase identification. It was found that Nd substitution alters phase selection by introducing at least one new phase and allowing for solidification of the superconducting composition directly from the melt via undercooling to below the peritectic transformation temperature. A decreasing trend in the overall melting temperature with increasing Nd was also identified.

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Processing and fabrication techniques for bulk superconductors: A critical review

Cited by 98 publications

References 80 publications

Processing and Properties of Silver-Clad Tl-Ba-Ca-Cu-O Wires and Tapes

Processing and Properties of Silver-Clad Tl-Ba-Ca-Cu-O Wires and Tapes

Practical superconductor development for electrical power applications

High-temperature phase relationships for Y_xNd_1–xBa₂Cu₃O_y(0.7 ≤ x ≤ 1.0) superconductors via containerless processing

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Processing and fabrication techniques for bulk superconductors: A critical review

Cited by 98 publications

References 80 publications

Processing and Properties of Silver-Clad Tl-Ba-Ca-Cu-O Wires and Tapes

Processing and Properties of Silver-Clad Tl-Ba-Ca-Cu-O Wires and Tapes

Practical superconductor development for electrical power applications

High-temperature phase relationships for YxNd1–xBa2Cu3Oy(0.7 ≤ x ≤ 1.0) superconductors via containerless processing

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High-temperature phase relationships for Y_xNd_1–xBa₂Cu₃O_y(0.7 ≤ x ≤ 1.0) superconductors via containerless processing