Textured joints for conductors and complex shaped components using the composite reaction texturing method

Soylu, B.; Adamopoulos, N.; Chen, M.; Watson, David; Glowacki, B.A.; Evetts, J.E.

doi:10.1109/77.402842

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…An alternative technique for fabricating joints in Bi-2212 tapes involves 'soldering' using a lower melting point Bi phase [102]. Solder pellets are made by pressing a mixture of Bi-2212 powder and LiCO 3 to lower the melting point, MgO whiskers to promote texturing during melt processing and organic binders.…”

Section: Bi-2212 Tapementioning

confidence: 99%

Persistent current joints between technological superconductors

Brittles

Mousavi

Grovenor

et al. 2015

Supercond. Sci. Technol.

122

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Persistent current joints are crucial components of superconducting magnets—enabling the production of the high and ultra-stable magnetic fields required, for instance, for magnetic resonance measurements. At this critical juncture when persistent mode magnets containing commercial high temperature superconductors may soon become a reality, it is of value to take stock and evaluate current challenges faced in the field of jointing. This paper provides a review of progress made to date on the production and characterization of joints between the five major technological superconductors—NbTi, Nb3Sn, MgB2, BiSCCO and REBCO, including the materials that are used to make these joints.

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Section: Bi-2212 Tapementioning

confidence: 99%

Persistent current joints between technological superconductors

Brittles

Mousavi

Grovenor

et al. 2015

Supercond. Sci. Technol.

122

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Characterisation of an optimised high current MgO/Bi2Sr2CaCu2O8.21 composite conductor using pulsed transport currents with pulsed magnetic fields

Glowacki¹,

Gilewski²,

Rogacki³

et al. 2003

Physica C: Superconductivity

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The fabrication of composite reaction textured Bi₂Sr₂CaCu₂O_{8+ delta}superconductors

Watson¹,

Chen²,

Evetts³

1995

Supercond. Sci. Technol.

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The application of high-temperature superconducting ceramics in magnet technology and power engineering is currently limited by the difficulty of fabricating wires and precision components with the required ceramic microstructure. The results of a detailed study of the reaction process for the fabrication of large bulk artefacts of BizSrzCaCu20w by composite reaction texturing are reported. A composite preform seeded with an aligned distribution of MgO fibres is prepared by elastomer processing or by tape casting, and reacted in three stages. The first stage is binder bum-off carried out in air; the optimum heating sequence d6pendS on sample cross-section, and results in complete removal of the binder system without the introduction of macroscopic defects. The second stage involves densification in a pure oxygen atmosphere to > 96% theoretical density, followed by partial melting and slow cooling. Finally, after the preparation of suitable current contacts, the oxygen stoichiometry, critical current density and irreversibility field are optimized by post-reaction annealing in a IOW partial pressure of oxygen. The process described enables the reproducible fabrication of textured composite conductors of arbitraly shape wihcharacteristic dimensions ranging from 0.5 mm to 200 mm. The critical current density in optimized conductors is 5 x lo4 A cm-' at 5 K and 12 T, and at 77 K has a self-field limited value which is in excess of 3 x lo3 A cnr2 in small cross-section samples.

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Textured joints for conductors and complex shaped components using the composite reaction texturing method

Cited by 3 publications

References 10 publications

Persistent current joints between technological superconductors

Persistent current joints between technological superconductors

Characterisation of an optimised high current MgO/Bi2Sr2CaCu2O8.21 composite conductor using pulsed transport currents with pulsed magnetic fields

The fabrication of composite reaction textured Bi₂Sr₂CaCu₂O_{8+ delta}superconductors

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Textured joints for conductors and complex shaped components using the composite reaction texturing method

Cited by 3 publications

References 10 publications

Persistent current joints between technological superconductors

Persistent current joints between technological superconductors

Characterisation of an optimised high current MgO/Bi2Sr2CaCu2O8.21 composite conductor using pulsed transport currents with pulsed magnetic fields

The fabrication of composite reaction textured Bi2Sr2CaCu2O8+ deltasuperconductors

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The fabrication of composite reaction textured Bi₂Sr₂CaCu₂O_{8+ delta}superconductors