Abstract
Supercon, Inc. has pursued the development of Nb-Ti-Ta ternary conductors fabricated via their unique APC (artificial pinning center) route. The process has been successfully utilized in the fabrication of NbTi conductors. Pure Nb and pure Ti sheets are alternately layered to form a Nb/Ti composite monofilament. Subsequent processing includes a heating step in which a controlled amount of diffusion occurs, forming superconducting NbTi alloy at the sheet interfaces. The result is a superconducting/normal structure that provides excellent Jc (critical current density) performance when reduced to final size.
The success of the Supercon APC process for binary Nb/Ti has led to investigations of ternary APC Nb-Ti-Ta composites. Ternary materials offer the promise of enhanced Hc2 (upper critical field) performance at low temperature (~1.8K) as compared to standard binary materials. Such performance enhancement is desirable for high energy physics applications, particularly in machines such as the proposed Large Hadron Collider (LHC). The Supercon process may afford a comparatively inexpensive, convenient way to manufacture ternary conductor. We will give an overview of our development efforts in this area and our present understanding of the key process parameters.
All compositions discussed in this paper are given in weight percent.
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References
M. Suenaga and K. M. Ralls, Some Superconducting Properties of Ti-Nb-Ta Ternary Alloys, Journ. Appl. Phys. 40(11): 4457 (1969).
D. G. Hawksworth and D. C. Larbalestier, Further Investigations of The Upper Critical Field and the High Field Critical Current Density in Nb-Ti and Its Alloys, IEEE Trans. on Magn. 17(1): 49 (1981).
E. Gregory, T. S. Kreilick, F. S. von Goeler, and J. Wong, Preliminary results on properties of ductile superconducting alloys for operation to 10 Tesla and above, in: “Proceedings of the Twelfth International Cryogenic Engineering Conference”, R. J. Scurlock and C. A. Bailey, eds., Butterworths, Guildford, Surrey, U.K (1988) p.874.
H. Liu, E. Gregory, N. D. Rizzo, J. D. McCambridge, X. S. Ling, and D. E. Prober, Experimental Results on Nb25wt.%Ta45wt.%Ti Superconducting Wire, IEEE Trans. on Appl. Supercond. 3(1): 1350 (1993).
G. L. Dorofejev, E. Y. Klimenko, S. V. Frolov, E. V. Nikulenkov, E. I. Plashkin, N. I. Salunin, and V. Y. Filkin, Current-carrying capacity of superconductors with artificial pinning centers, in: “Proceedings of the Ninth International Conference on Magnet Technology”, C. Marinucci and P. Weymouth, eds., Swiss Institute for Nuclear Research, Zurich (1985), p. 564.
L. R. Motowidlo, H. C. Kanithi, and B. A. Zeitlin, NbTi superconductors with artificial pinning centers, in: “Advances in Cryogenic Engineering (Materials)”, vol. 36A, R. P. Reed and F. R. Fickett, eds., Plenum Press, New York (1990) p. 311.
J. M. Seuntjens and D. C. Larbalestier, Development of In-Situ Second Phase Pinning Structure in Niobium-Titanium Based Superconducting Alloys, IEEE Trans. on Magn. 27(2): 1120 (1991).
K. Matsumoto, Y. Tanaka, K. Yamafuji, M. Iwakuma, and T. Matsushita, Effects of Artificial Pins on the Flux Pinning Force and Other Superconducting Properties in NbTi Superconductors, IEEE Trans. on Appl. Supercond. 3(1): 1362 (1993).
R. M. Scanlan, D. R. Deitderich, P. McManaman, and W. Ghiorso, Characterization and Coil Test Results for a Multifilamentary NbTi Conductor Utilizing Artificial Pinning Center Technology, IEEE Trans. on Magn. 27(1): 1358 (1991).
R. M. Scanlan, A. Lietzke, J. Royet, A. Wandesforde, C.E. Taylor, J. Wong, and M. K. Rudziak, Evaluation of APC NbTi Superconductor in a Model Dipole Magnet, IEEE Trans. on Magn. 30(4): 1627 (1994).
C. Renaud, M. Rudziak, J. Seuntjens, T. Wong, J. Wong, P. Eckels, C. King, T. Havens, D. Mantone, B. Myers, and S. Wong, First Commercial Application of NbTi Superconductor Employing Artificial Pinning Centers, IEEE Trans. on Appl. Supercond. 5(2): 1189 (1995).
M. K. Rudziak, J. M. Seuntjens, C. V. Renaud, T. Wong, and J. Wong, Development of APC Nb-Ti Composite Conductors at Supercon, Inc., IEEE Trans. on Appl. Supercond. 5(2): 1709 (1995).
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© 1996 Springer Science+Business Media New York
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Rudziak, M.K., Seuntjens, J.M., Wong, T., Wong, J. (1996). Application of the Supercon APC Process to Nb-Ti-Ta Ternary Conductors. In: Summers, L.T. (eds) Advances in Cryogenic Engineering Materials . Advances in Cryogenic Engineering Materials , vol 42. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9059-7_147
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