US 11,791,066 B2
Diffusion barriers for metallic superconducting wires
David B. Smathers, Columbus, OH (US); and Paul Aimone, Bridgewater, MA (US)
Assigned to Materion Newton Inc., Newton, MA (US)
Filed by David B. Smathers, Columbus, OH (US); and Paul Aimone, Bridgewater, MA (US)
Filed on Sep. 28, 2022, as Appl. No. 17/954,628.
Application 17/954,628 is a continuation of application No. 17/130,399, filed on Dec. 22, 2020, granted, now 11,495,372.
Application 17/130,399 is a continuation of application No. 16/718,542, filed on Dec. 18, 2019, granted, now 10,902,978, issued on Jan. 26, 2021.
Application 16/718,542 is a continuation of application No. 16/295,725, filed on Mar. 7, 2019, granted, now 10,546,669, issued on Jan. 28, 2020.
Application 16/295,725 is a continuation in part of application No. 15/964,723, filed on Apr. 27, 2018, granted, now 10,510,470, issued on Dec. 17, 2019.
Application 15/964,723 is a continuation of application No. 15/696,330, filed on Sep. 6, 2017, granted, now 9,984,795, issued on May 29, 2018.
Claims priority of provisional application 62/639,530, filed on Mar. 7, 2018.
Claims priority of provisional application 62/383,676, filed on Sep. 6, 2016.
Prior Publication US 2023/0024897 A1, Jan. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01B 12/10 (2006.01); H01B 12/06 (2006.01); H10N 60/20 (2023.01); H10N 60/85 (2023.01); H10N 60/01 (2023.01)
CPC H01B 12/10 (2013.01) [H01B 12/06 (2013.01); H10N 60/20 (2023.02); H10N 60/85 (2023.02); H10N 60/0128 (2023.02); H10N 60/0156 (2023.02); H10N 60/0184 (2023.02); Y02E 40/60 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A superconducting wire possessing diffusion resistance and mechanical strength, the superconducting wire comprising:
a wire matrix comprising Cu;
a plurality of composite filaments; and
disposed between the wire matrix and the composite filaments, a diffusion barrier comprising a Nb alloy containing 0.1%-20% W or a Nb—Ta alloy containing 0.1%-20% W,
wherein:
each composite filament comprises (i) a plurality of monofilaments and (ii) a cladding comprising Cu surrounding the plurality of monofilaments,
each monofilament comprises a core comprising Nb and, surrounding the core, a cladding comprising Cu, and
the diffusion barrier extends through an axial dimension of the wire.
 
13. A superconducting wire possessing diffusion resistance and mechanical strength, the superconducting wire comprising:
a wire matrix comprising Cu;
a plurality of composite filaments;
disposed between the wire matrix and the composite filaments, a diffusion barrier comprising at least one of Nb, Ta, or W; and
disposed between the composite filaments and the diffusion barrier, an annular region comprising a Nb-based superconducting phase,
wherein:
each composite filament comprises (i) a plurality of monofilaments and (ii) a cladding comprising Cu surrounding the plurality of monofilaments,
each monofilament comprises a core comprising Nb and, surrounding the core, a cladding comprising Cu, and
the diffusion barrier extends through an axial dimension of the wire.