Microstructure and Critical Current Densities of PbMo<Subscript>6</Subscript>S<Subscript>8</Subscript> in Hot-Worked Mo-Sheathed Wires: Fid-Bau Portal

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Microstructure and Critical Current Densities of PbMo6S8 in Hot-Worked Mo-Sheathed Wires

Yamasaki, H. / Willis, T. C. / Larbalestier, D. C. / Kimura, Y.

Abstract The critical current densities, Jc, of hot-worked Mo-sheathed PbMo6S8 wires are affected very much by their composition and heat treatments. For example, Jc for Pb1+xMo6S7.5 wires heat treated at 700°C took a maximum value at x = 0.02 (Jc = 2.1–2.9 × 108 A/m2 at 8 T), and decreased mono-tonically with increasing x (Jc ≈ 0.8 × 108 A/m2 for x = 0.05, and 0.3 × 108 A/m2 for x = 0.1). We have investigated the Jc values for many Pb1+xMo6S8-y sample wires, and microstructural analyses have been performed using SEM and TEM techniques. It has been demonstrated that Jc is not determined only by the grain size, which is only of order 0.1–0.3 μm at optimum, and that the connections between PbMo6S8 grains are in general not complete.

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Microstructure and Critical Current Densities of PbMo6S8 in Hot-Worked Mo-Sheathed Wires

Yamasaki, H. / Willis, T. C. / Larbalestier, D. C. / Kimura, Y.

Abstract The critical current densities, Jc, of hot-worked Mo-sheathed PbMo6S8 wires are affected very much by their composition and heat treatments. For example, Jc for Pb1+xMo6S7.5 wires heat treated at 700°C took a maximum value at x = 0.02 (Jc = 2.1–2.9 × 108 A/m2 at 8 T), and decreased mono-tonically with increasing x (Jc ≈ 0.8 × 108 A/m2 for x = 0.05, and 0.3 × 108 A/m2 for x = 0.1). We have investigated the Jc values for many Pb1+xMo6S8-y sample wires, and microstructural analyses have been performed using SEM and TEM techniques. It has been demonstrated that Jc is not determined only by the grain size, which is only of order 0.1–0.3 μm at optimum, and that the connections between PbMo6S8 grains are in general not complete.

Microstructure and Critical Current Densities of PbMo6S8 in Hot-Worked Mo-Sheathed Wires

Yamasaki, H. / Willis, T. C. / Larbalestier, D. C. / Kimura, Y.

Abstract The critical current densities, Jc, of hot-worked Mo-sheathed PbMo6S8 wires are affected very much by their composition and heat treatments. For example, Jc for Pb1+xMo6S7.5 wires heat treated at 700°C took a maximum value at x = 0.02 (Jc = 2.1–2.9 × 108 A/m2 at 8 T), and decreased mono-tonically with increasing x (Jc ≈ 0.8 × 108 A/m2 for x = 0.05, and 0.3 × 108 A/m2 for x = 0.1). We have investigated the Jc values for many Pb1+xMo6S8-y sample wires, and microstructural analyses have been performed using SEM and TEM techniques. It has been demonstrated that Jc is not determined only by the grain size, which is only of order 0.1–0.3 μm at optimum, and that the connections between PbMo6S8 grains are in general not complete.

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Title:

Microstructure and Critical Current Densities of PbMo6S8 in Hot-Worked Mo-Sheathed Wires

Contributors:

Yamasaki, H. (author) / Willis, T. C. (author) / Larbalestier, D. C. (author) / Kimura, Y. (author)

Published in:

Advances in Cryogenic Engineering Materials ; 343-351

An International Cryogenic Materials Conference Publication ; 36

Publication date:

1990-01-01

Size:

9 pages

ISBN:

978-1-4613-9882-0 , 978-1-4613-9880-6

ISSN:

DOI:

https://doi.org/10.1007/978-1-4613-9880-6_45

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Critical Current Density , High Temperature Heat , High Temperature Heat Treatment , Sample Wire , High Critical Current Density Chemistry , Biochemical Engineering , Characterization and Evaluation of Materials , Mechanical Engineering

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