US 12,073,958 B2
Diffusion barriers for metallic superconducting wires
David B. Smathers, Columbus, OH (US); and Paul R. Aimone, Bridgewater, MA (US)
Assigned to MATERION NEWTON INC., Newton, MA (US)
Filed by David B. Smathers, Columbus, OH (US); and Paul R. Aimone, Bridgewater, MA (US)
Filed on Jan. 4, 2023, as Appl. No. 18/092,986.
Application 18/092,986 is a continuation of application No. 17/399,246, filed on Aug. 11, 2021, granted, now 11,574,749.
Application 17/399,246 is a continuation of application No. 16/919,297, filed on Jul. 2, 2020, granted, now 11,120,927, issued on Sep. 14, 2021.
Application 16/919,297 is a continuation of application No. 16/682,075, filed on Nov. 13, 2019, granted, now 10,741,309, issued on Aug. 11, 2020.
Application 16/682,075 is a continuation 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 62/383,676, filed on Sep. 6, 2016.
Prior Publication US 2023/0187104 A1, Jun. 15, 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)] 19 Claims
OG exemplary drawing
 
1. A superconducting wire comprising:
an inner wire stabilizing matrix comprising Cu;
disposed around the wire stabilizing matrix, a diffusion barrier comprising an alloy containing Ta-3W and one or more alloying elements selected from the group consisting of Ru, Pt, Pd, Rh, Os, Ir, Mo, Re, and Si; and
a plurality of composite filaments disposed around the diffusion barrier and
separated from the wire stabilizing matrix by the diffusion barrier,
wherein:
each composite filament comprises (i) a plurality of Nb-based monofilaments and
(ii) a cladding comprising Cu surrounding the plurality of monofilaments,
the diffusion barrier occupies 2%-15% of a cross-sectional area of the superconducting wire, and
the diffusion barrier extends through an axial dimension of the wire.