DIRECT SOLID-STATE PRECIPITATION PROCESSED A-15 (Nb3Al) SUPERCONDUCTING MATERIAL
A 'solid-state precipitation' process was used to prepare superconducting tapes containing Nb{sub 3}Al in a niobium matrix. Small ingots of Nb-(17-19 at.%)Al were prepared by arc melting, homogenizing, quenching, warm rolling into tape, and aging at 750-900 C to precipitate the A15 phase. Transmission electron microscopy studies revealed Nb{sub 3}Al precipitation in fine particles which formed a semicontinuous network over subgrain boundaries formed by the recovery of deformation-induced dislocations. Promising high-field critical currents were obtained (J{sub c}-10{sup 4} A/cm{sup 2} in a field of 14 T at 4.2 K).
- Research Organization:
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
- Sponsoring Organization:
- Materials Sciences Division
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1000027
- Report Number(s):
- LBL-11190
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 11 Vol. 37; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Sun Nov 30 23:00:00 EST 1980
· Appl. Phys. Lett.; (United States)
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OSTI ID:6742825
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Thesis/Dissertation
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Mon Dec 31 23:00:00 EST 1979
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OSTI ID:5399020
A15 superconductors through direct solid-state precipitation: V/sub 3/Ga and Nb/sub 3/Al
Technical Report
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Mon Sep 01 00:00:00 EDT 1980
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OSTI ID:6769991