Method for fabricating oxide superconducting coatings

Details Method for fabricating oxide superconducting coatings Method for fabricating oxide superconducting coatings

1991-10-01

1993-06-15

Niebling, John

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

2041815, 205224, C25D 1302

Patent

active

052198286

ABSTRACT:
A copper substrate is immersed into a solution in which a Y-Ba-Cu-O series oxide superconducting fine powder is dispersed into an acetone solution and an electric field is applied thereto. A coating deposited on the copper substrate by electrophoresis is sintered with high temperature in vacuum or in an inert gas atmosphere and then subjected to heat-treatment for oxygen composition ratio in an atmosphere of oxygen or air under 500.degree. C. This method prevents occurrence of a CuO layer, which would conventionally be formed at an interface between a Y-Ba-Cu-O film and a Cu substrate disadvantageously, and moreover enables fabrication of superconducting coatings having satisfactory characteristics.

REFERENCES:
patent: 4879270 (1989-11-01), Maxfield et al.
patent: 4939119 (1990-07-01), Iwata et al.
patent: 4952557 (1990-08-01), Schmidt
patent: 5071828 (1991-12-01), Greuter et al.
Applied Physics Letters, vol. 55, No. 5, 31 Jul. 1989.

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