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A sulfurization method for creating the buffer-layers current flow diverter architecture in REBa₂Cu₃O₇ coated conductors

Pedro Barusco, Jaël Giguère, Christian Lacroix, Frédéric Sirois, Xavier Granados, Teresa Puig and Xavier Obradors

Article (2023)

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Abstract

The current flow diverter (CFD) is a known concept that has proven to effectively reduce the probability of destructive hot spots in REBa₂Cu₃O₇ (REBCO; RE = rare earth) coated conductors (CCs) by boosting the normal zone propagation velocity. However, the implementation of the CFD concept requires additional steps in a fabrication process that is already complex and has struggled to find a simple reel-to-reel fabrication method. This work reports on the details of a fabrication route for the buffer-layers-CFD (bCFD) architecture using a solid-vapor silver sulfurization technique to tune the geometry of the metal stabilizer in the high-temperature superconductor tape. The analysis of the microstructure and superconducting properties of the Ag₂S/Ag/GdBCO trilayer processed under different conditions shows how we achieved a new customized functional CC with the bCFD architecture. In DC limitation experiments, this bCFD-sulfide architecture allowed to generate an electric potential much faster than the conventional architecture (60 V s⁻¹ vs. 1.2 V s⁻¹) thanks to the strong enhancement of the NPZV.

Uncontrolled Keywords

normal zone propagation velocity (NZPV); curent flow diverter (CFD); coated conductors (CC); HTS-tape; superconductivity

Subjects: 2500 Electrical and electronic engineering > 2500 Electrical and electronic engineering
2500 Electrical and electronic engineering > 2501 Power systems
Department: Department of Electrical Engineering
Funders: Project FASTGRID, Project COACHSUPENERGY, Project SUMATE, Generalitat de Catalunya - Project 2017-SGR 753, COST Action NANOCOHYBRI, Center of Excellence awards Severo Ochoa
Grant number: EU-H2020, 2017-SGR-1519, MAT2014-51778-C2-1-R, RTI2018-095853-BC21, RTI2018-095853B-C22, CA16218, SEV-2015-0496, CEX2019-000917-S
PolyPublie URL: https://publications.polymtl.ca/56697/
Journal Title: Superconductor Science & Technology (vol. 36, no. 12)
Publisher: IOP Publishing Ltd
DOI: 10.1088/1361-6668/ad01ec
Official URL: https://doi.org/10.1088/1361-6668/ad01ec
Date Deposited: 23 Jan 2024 17:23
Last Modified: 13 Apr 2024 13:11
Cite in APA 7: Barusco, P., Giguère, J., Lacroix, C., Sirois, F., Granados, X., Puig, T., & Obradors, X. (2023). A sulfurization method for creating the buffer-layers current flow diverter architecture in REBa₂Cu₃O₇ coated conductors. Superconductor Science & Technology, 36(12), 125005 (11 pages). https://doi.org/10.1088/1361-6668/ad01ec

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