US 11,990,251 B2
Methods for manufacturing a superconductor
Taeyoung Pyon, Waterbury, CT (US); and Antti Kilpinen, Turku (FI)
Assigned to LUVATA WATERBURY, INC., Waterbury, CT (US)
Filed by LUVATA WATERBURY, INC., Waterbury, CT (US)
Filed on Mar. 14, 2023, as Appl. No. 18/183,913.
Application 18/183,913 is a continuation of application No. 16/652,055, granted, now 11,631,508, previously published as PCT/US2019/017270, filed on Feb. 8, 2019.
Prior Publication US 2023/0215604 A1, Jul. 6, 2023
Int. Cl. H01B 12/10 (2006.01); H10N 60/01 (2023.01)
CPC H01B 12/10 (2013.01) [H10N 60/0128 (2023.02); H10N 60/0184 (2023.02)] 11 Claims
OG exemplary drawing
 
1. A method for manufacturing a superconductor, comprising:
forming a metal assembly precursor within a hollow copper support element by positioning a plurality of conductor elements about a core including Sn to provide a first plurality of inner interstitial spaces between the plurality of conductor elements between the core and conductor elements and a second plurality of outer interstitial spaces between the hollow copper support element and the core, the plurality of conductor elements including unreacted Nb;
positioning inner interstitial elements in one or more of the plurality of inner interstitial spaces, the inner interstitial elements including SnO2 rods configured to serve as an oxidation additive;
reducing the metal assembly precursor via cold drawing to produce a reduced metal assembly;
reaction heat treating the reduced metal assembly so that the unreacted Nb undergoes a phase transformation to a reacted superconductor;
stacking the reduced metal assembly with additional reduced metal assemblies to produce a multifilament precursor; and
wherein the metal assembly precursor includes a diffusion blocking layer between the plurality of conductor elements and the hollow copper support element;
wherein reaction heat treating the reduced metal assembly includes reaction heat treating the multifilament precursor such that the reacted superconductor is a multifilament superconductor.