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Effects of Hot Isostatic Pressing on Superconducting Properties of Nb/ss Sheathed PbMo6S8 Monofilamentary Wires
Abstract The monofilamentary PbMo6S8 conductors with Nb diffusion barriers have been produced by the powder metallurgical preparation method. The influence of HIP treatment and Sn addition on the superconducting properties are discussed on the basis of critical current densities(up to fields of 30.1 T), critical temperatures, as well as SEM analysis. The use of pure Pb starting powder with deoxidation is useful for increasing the packing density of the composites, and for increasing the superconducting properties of PbMo6S8 wires. The critical current density can be enhanced in the wires, HIP treated and Sn added. The best Jc values for the wires with HIP treatment alone reached 104 A/cm2 at a magnetic field of 20 T, and 2.7 × 103 A/cm2 at 27 T, and for the wire with both HIP treatment and Sn addition were 5.4 × 103 A/cm2 at 27 T and 2.5 × 103 A/cm2 at 30.1 T. The behavior of the pinning force density FP (B) was also analyzed with a modified flux shear model.
Effects of Hot Isostatic Pressing on Superconducting Properties of Nb/ss Sheathed PbMo6S8 Monofilamentary Wires
Abstract The monofilamentary PbMo6S8 conductors with Nb diffusion barriers have been produced by the powder metallurgical preparation method. The influence of HIP treatment and Sn addition on the superconducting properties are discussed on the basis of critical current densities(up to fields of 30.1 T), critical temperatures, as well as SEM analysis. The use of pure Pb starting powder with deoxidation is useful for increasing the packing density of the composites, and for increasing the superconducting properties of PbMo6S8 wires. The critical current density can be enhanced in the wires, HIP treated and Sn added. The best Jc values for the wires with HIP treatment alone reached 104 A/cm2 at a magnetic field of 20 T, and 2.7 × 103 A/cm2 at 27 T, and for the wire with both HIP treatment and Sn addition were 5.4 × 103 A/cm2 at 27 T and 2.5 × 103 A/cm2 at 30.1 T. The behavior of the pinning force density FP (B) was also analyzed with a modified flux shear model.
Effects of Hot Isostatic Pressing on Superconducting Properties of Nb/ss Sheathed PbMo6S8 Monofilamentary Wires
Hamasaki, K. (author) / Shimizu, Y. (author) / Watanabe, K. (author)
1990-01-01
7 pages
Article/Chapter (Book)
Electronic Resource
English
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