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US 5,149,687 AGranted
Method for making oriented bismuth and thallium superconductors comprising cold pressing at 700 MPa
AssigneeUnited Technologies Corporation
InventorFrancis S. Galasso
Life of this patent
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Abstract
An oriented superconducting material may be made by cold pressing a nonoriented superconducting material selected from the group consisting of Bi.sub.1, Bi.sub.2, Tl.sub.1, Tl.sub.2, Pb substituted Bi.sub.1, Pb substituted Bi.sub.2, Pb substituted Tl.sub.1, and Pb substituted Tl.sub.2 superconductor materials at a pressure sufficient to form an oriented superconducting material.
Claims4
A method for making an oriented superconducting material, comprising:
- cold pressing a nonoriented superconducting material selected from the group consisting of Bi.sub.1, Bi.sub.2, Tl.sub.1, Tl.sub.2, Pb substituted Bi.sub.1, Pb substituted bi.sub.2, Pb substituted Tl.sub.1, and Pb substituted Tl.sub.2 superconductor materials at a pressure of at least about 700 MPa to form an oriented superconducting material that has a ratio of x-ray refection intensity from the (0010) plane to the reflection intensity from the (105) plane of 1.6 or greater.
Dependencies are inferred from the claim text.