Supporting data for: Superconducting and mechanical properties of low-temperature solders for joints

Hampshire, Damian (Durham University, UK); Tsui, Yeekin (Durham University, UK); Surrey, Elizabeth (Culham Science Centre, UK); Mahmoud, Ra'ad (Durham University, UK)

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Supporting data for: Superconducting and mechanical properties of low-temperature solders for joints Open Access

All large superconducting applications require electrical connections between superconductors or between superconductors and other metallic parts of the systems. Such connections are essential components for these applications and are usually made by melting the solder (or soft soldering). In general, the melting point, electrical resistivity, mechanical and wetting properties and toxicity are all important criteria when choosing the best solder for a specific application. If the solder itself is superconducting under the operating conditions of the application then there is also the possibility of extremely low resistance joints. In this work we report on the superconducting properties of six low melting point solders: Bi49Pb18In21Sn12 (Cerrolow 136), Pb20Sn34Bi46, Pb20Sn60Bi20, In52Sn48, Pb38Sn62 and Pb57Bi36Sb7 and the mechanical properties of three of the six solders (Pb38Sn62, Cerrolow 136 and Pb20Sn34Bi46). We have found that all the solders except Pb38Sn62 and In52Sn48 have relatively high upper critical fields (higher than 2 T) at temperatures lower than 3 K. Although the good ductility and high maximum fracture elongation of Pb38Sn62 is useful when using low temperature superconductors, other solders may be preferred with high temperature superconductors because their lower melting temperatures mean they are less likely to delaminate them.

Descriptions

Resource type: Other
Contributors: Creator: Tsui, Yeekin ¹
Creator: Mahmoud, Ra'ad ¹
Creator: Surrey, Elizabeth ²
Creator: Hampshire, Damian ¹
Contact person: Hampshire, Damian ¹

¹ Durham University, UK
² Culham Science Centre, UK
Funder: Engineering and Physical Sciences Research Council
Research methods
Other description
Keyword: coated conductor
solder
soldered joint
tensile test
Subject
Location
Language
Cited in: doi:10.1109/TASC.2016.2536806
Identifier: ark:/32150/gh93gz495
doi:10.15128/gh93gz495
Publisher: Durham University
Date Created: 2015-08-07T00:00:00.000+00:00

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Depositor: D.P. Hampshire
Date Uploaded: 12 October 2015, 14:10:53
Date Modified: 25 July 2016, 16:07:45
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Last modified: 2016:07:25 16:39:22+01:00

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