Internally oxidized Ag/1.2 at.% Mg sheaths for Bi-2223 tapes

Author

Prorok, B.C. ; Park, J.-H. ; Goretta, K.C. ; Koritala, R.E. ; Balachandran, U. ; McNallan, M.J.

Author_Institution

Argonne Nat. Lab., IL, USA

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

3273

Lastpage

3276

Abstract

Bi-2223 tapes sheathed in dispersion-hardened Ag alloys that contain Mg have not generally achieved superconducting properties comparable to those of tapes sheathed in pure Ag, factors involved in the internal oxidation process, such as oxygen diffusion and evolution of the grain structure of the sheath, appear to affect phase development of the Bi-2223 superconductor, Ag and Ag/1.2 at.% Mg sheaths, and alloy/Bi-2223 composite tapes, have been prepared and heat treated, thermal processing procedures were optimized with respect to the diffusion of oxygen and strength profiles of the sheaths

Keywords

bismuth compounds; calcium compounds; high-temperature superconductors; magnesium alloys; multifilamentary superconductors; oxidation; silver alloys; strontium compounds; superconducting tapes; Bi-2223 tapes; Bi₂Sr₂Ca₂Cu₃O₁₀-AgMg; dispersion-hardened Ag alloys; grain structure; high temperature superconductor; internally oxidized Ag/1.2 at.% Mg sheaths; oxygen diffusion; phase development; strength profiles; superconducting properties; thermal processing procedures; High temperature superconductors; Laboratories; Magnetic field induced strain; Optical microscopy; Oxidation; Scanning electron microscopy; Superconducting films; Superconducting materials; Telephony; US Department of Energy;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.919761

Filename

919761