Second Generation Wire Development at AMSC

• Published in: IEEE transactions on applied superconductivity Vol. 23; no. 3; p. 6601205
• Main Authors: Rupich, M. W., Xiaoping Li, Sathyamurthy, S., Thieme, C. L. H., DeMoranville, K., Gannon, J., Fleshler, S.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 2013; Institute of Electrical and Electronics Engineers
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Critical current; Critical current density; Critical currents; Cuprates superconductors (high tc and insulating parent compounds); Exact sciences and technology; ferromagnetic; High temperature superconductors; Magnetic properties and materials; Physics; Properties of type I and type II superconductors; second generation wire; Studies of specific magnetic materials; Substrates; Superconductivity; Wires; Y-based cuprates; yttrium barium copper oxide; Performance evaluation; Ferromagnetic materials; Critical field; Coatings; Cost; Texture; Research and development; Deposition process; Military application; Manufacturing processes; Critical current; Wires; High-Tc superconductors; Ferromagnetism; Barium Copper Yttrium Oxides Mixed; Critical current density; high temperature superconductors; Metal deposition; Clientele; Rolling; Coated material; yttrium barium copper oxide; ferromagnetic; Barium oxide; Large scale; Copper oxide; Yttrium; second generation wire
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2012.2235495

AMSC has established a Second Generation (2G) High-Temperature Superconductor (HTS) wire manufacturing technology based on the Rolling Assisted Biaxially Textured Substrate and Metal Organic Deposition processes. AMSC's 2G wire (Amperium) has been used by a wide range of customers for development and testing of initial commercial HTS-based applications. Although the Amperium wire properties and quantities satisfy the requirements for these initial projects, improvements in critical current, field performance, and cost are beneficial for large-scale commercial and military applications. As Amperium wire manufacturing continues to ramp up, AMSC's R&D program has focused on increasing critical current, and the development of nonmagnetic substrates. The R&D process developed for a single-coat, 1.2 μm YBCO film has been transferred to production-scale equipment, resulting in the first Amperium wires with critical currents reaching 500 A/cm-w (77 K, self-field) in production length. A nonmagnetic substrate, which minimizes ferromagnetic substrate losses in ac cable applications, has been produced in R&D lengths and demonstrated in an Amperium cable wire.