Second generation HTS wire based on RABiTS substrates and MOD YBCO

• Published in: IEEE transactions on applied superconductivity Vol. 15; no. 2; pp. 2611 - 2616
• Main Authors: Schoop, U., Rupich, M.W., Thieme, C., Verebelyi, D.T., Zhang, W., Li, X., Kodenkandath, T., Nguyen, N., Siegal, E., Civale, L., Holesinger, T., Maiorov, B., Goyal, A., Paranthaman, M.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.06.2005; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; BARIUM OXIDES; BUFFERS; COPPER OXIDE; COPPER OXIDES; CRITICAL CURRENT; DEPOSITION; Economics; Electric connection. Cables. Wiring; Electrical engineering. Electrical power engineering; Electronic equipment and fabrication. Passive components, printed wiring boards, connectics; Electronics; Exact sciences and technology; High temperature superconductors; INCLUSIONS; Manufacturing processes; MATERIALS SCIENCE; metal organic deposition; Meters; MICROSTRUCTURES; MOD; Nanostructure; Power cables; Power electronics, power supplies; Power generation; QUANTUM DOTS; Reproducibility of results; Research and development; SUBSTRATES; Superconducting cables; Superconducting epitaxial layers; Superconducting filaments and wires; SUPERCONDUCTING WIRES; SUPERCONDUCTIVITY; SUPERCONDUCTORS; Various equipment and components; WIRE; YBCO superconductors; Yttrium barium copper oxide; YTTRIUM OXIDE; YTTRIUM OXIDES; Performance evaluation; Capability index; Power cables; Metal deposition; MOD; Nanoparticle; Optimization method; YBa2Cu3O7-x. RABiTS; High temperature superconductors; Power electronics; Optimization; Research and development; Critical current; metal organic deposition; Reproducibility; 2G; Power device; High temperature superconductor
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2005.847681

The performance of Second Generation (2G) high temperature superconducting wire manufactured by continuous reel-to-reel processes is nearing the 300 A/cm-width (77 K, self field) performance threshold for commercial power cable applications. The 2G manufacturing approach under development at American Superconductor is based on the combination of the RABiTS substrate-buffer technology with metal organic deposition (MOD) of the YBCO layer. The capability of this process has been demonstrated in multiple 10 meter lengths with critical currents exceeding 250 A/cm-width with high uniformity and reproducibility. Critical currents of 380 A/cm-width have been achieved in short length samples prepared by the same basic process. The incorporation of nanoparticles ("nanodots") into the YBCO layer using the MOD process has resulted in a 2-fold improvement in the critical current at 65 K in a 3 T field. The research and development focus at ASMC is now directed toward the economical scale-up of the RABiTS/MOD process, optimization of the conductor properties for targeted applications and the use of 2G wire in initial demonstration applications.