Selected materials development for the 100 T magnet: Cu-Nb conductors with

1. Materials R&D for the 100-Tesla Pulsed MagnetGregory S. Boebinger, Florida State University, DMR 0654118 Pulsed Field Facility and Magnet Science & Technology Recently, the MagLab commissioned a new multi-shot pulsed magnet (at right) that delivers 100 T magnet pulses for MagLab user experiments. One of the essential prerequisites for this achievement was the long-term and painstaking research and development of high strength materials. As an example, to produce the highest non-destructive magnetic field in the world, the conductors used in the magnet need to have electrical conductivities 70% those of pure copper along with strengths higher than that of steel. Selected materials development for the 100 T magnet: Cu-Nb conductors with nanocomposite components Fabrication of large cross-section GlidCop conductors with nanoparticles as strengthening components Cold deformation and heat treatment of a high stiffness MP35N alloy to achieve ultra-high strength Fabrication and characterization of stainless steel 301 to achieve ultra-high strength Fabrication and characterization of Zylon (PBO) based composite for reinforcement The MagLab has been collaborating with vendors to develop high strength large cross-section CuNb conductors that are strengthened by Nb nano-ribbons. The R&D efforts result in cross-section and strength increased by >200% and 20%, respectively. The figure at right shows the Nb ribbons <10 nm in thickness (light contrast) embedded in the Cu matrix (dark contrast). Elements of this research have been published by Han, K.; Toplosky, Xin, Y.; Sims, J.R. and Swenson, C.A., in IEEE Trans. Appl. Supercond., 20 (3), 1463-1466 (2010)