High-temperature porous-ceramic superconductors

Details High-temperature porous-ceramic superconductors High-temperature porous-ceramic superconductors

1990-10-29

1993-01-19

Dixon, Jr., William R.

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

505785, 252521, 501152, 501123, C04B 4189, H01B 1206, H01L 3912, C01G 300

Patent

active

051807068

ABSTRACT:
A method for fabricating a high-temperature ceramic superconductor having a Y-Ba-Cu-O or other copper-oxide composition of comparable properties so as to render the ceramic porous to define interlaced diffusion channels throughout the entire body of the ceramic. As a consequence, oxygen, an essential component thereof, will in the course of firing the ceramic, diffuse throughout the interior of the body and thereby interact and become integrated with the crystal structure of the ceramic to form a superconductor having superior properties. The resultant porous ceramic body may be used as a superconductive device, or it may be ground into particles and dispersed as a filler in a binder acting as a plastic agent that can be extruded, molded, or otherwise shaped to create a Meisner-effect shield, a cylindrical superconductive bearing or other superconductive structure.

REFERENCES:
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R. Dagani, "Superconductivity: A Revolution In Electricity Is Taking Shape" CIEN May 11, 1987, 7-16.
T. P. McAndrews et al., "Reaction of Organic Materials with YBa.sub.2 Cr.sub.3 O.sub.2 " Amer. Vac. Soc. 3, Conf Proceed 165, Nov. 6, 1987 451-455.
M. O. Eatoash, "Orthorhombic-Tetrogonal Phase Translation in High-Temperature Superconductor YBa.sub.2 Cu.sub.3 O.sub.7 " Appl. Phy. Lett. 51(5) Aug. 3, 1987 367-68.

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