Stabilized Nb-Zr strip and its use in large magnets.
Nb-Zr strip superconductor for stabilization of critical current anisotropy and coil degradation in magnets
NIOBIUM↗
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Results for “Nb-Zr”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Nb-Zr and Hf-W Isotope Systematics: Applications to Early Solar System Chronology and Planetary Differentiation
We present new Zr isotope data that provide constraints on the planetary differentiation time scale. Additional information is contained in the original extended abstract.
Yin, Qing-Zhu↗
Critical surfaces for commercial Nb sub 3 Sn ribbon and Nb 25 a/o Zr wire.
Critical surface between superconducting and normal state determined for commercial niobium stannide ribbon and Nb-Zr wire
SUPERCONDUCTING MAGNET↗
Alternating-current-induced voltages in superconducting wires.
AC induced voltages in Nb and Nb-Zr superconducting wires, measuring I-V curves and energy loss per cycle
Taylor, H. F.↗
Surface damage from high-velocity flow of lithium
Nb-Zr alloy and yttria corrosion by high velocity Li flow, discussing material removal depth
Hays, L. G.↗
Force-reduced superconducting toroidal magnet coils
Force-reduced superconducting toroidal magnet coils built with Cu plated Nb-Zr wire, investigating current enhancement characteristics
Boom, R. W.↗
Magnetic flux flow in a Type 2 superconductor
Flow measurement of magnetic flux in Nb-Zr superconductor to infer magnetic induction and currents in material
Urban, E. W.↗
Flux flow and a new critical-current formula
Time linear increase of magnetic flux flow through superconducting Nb-Zr wall, inferring empirical critical current density model agreement with measured flow rate
Urban, E. W.↗
Metal- and intermetallic-matrix composites for aerospace propulsion and power systems
The requirements for high specific strength refractory materials of prospective military, civil, and space propulsion systems are presently addressed in the context of emerging capabilities in metal- and intermetallic-matrix composites. The candidate systems encompass composite matrix compositions of superalloy, Nb-Zr refractory alloy, Cu-base, and Ti-base alloy types, as well as such intermetallics as TiAl, Ti3Al, NiAl, and MoSi2. The brittleness of intermetallic matrices remains a major consideration, as does their general difficulty of fabrication.
Doychak, J.↗
Effects of thermomechanical processing on the microstructure and mechanical properties of Nb-1Zr-C alloys
A systematic study to evaluate the effects of thermomechanical processing on the microstructure and mechanical properties of Nb-1Zr alloy sheet containing 0.06 and 0.1 wt.%C (PWC-11) was conducted and compared to the results of Nb-1Zr. Coarse orthorhombic Nb2C precipitates were present in all the cast, extruded and cold rolled Nb-Zr samples containing C. After high temperature (greater than 0.5 T(sub m)) exposure (with or without applied stress), the Nb2C transforms to very fine and extremely stable FCC (Zr, Nb)C dispersoid, resulting in a highly creep resistant material. Only ZrO2 precipitates were found in Nb-1Zr. The creep strength of the 0.06C and the 0.1C carbide strengthened alloys were much superior to Nb-1Zr. At 1350 K the strength of the 0.06C alloy was about three times that of Nb-1Zr, while the 0.1C alloy had about five times the creep stress capability of Nb-1Zr. The tensile strength, long term creep strength, and stability of the microstructure of the PWC-11 sheet appear to be independent of the number of 1900 K extrusions performed prior to cold rolling. The microhardness of these single, double and triple extnided PWC-11 sheets also were comparable. The tensile strength of PWC-11 and Nb-1Zr at room temperature and 1350 K were comparable.
Titran, Robert H.↗