Silver coated superconducting ceramic powder
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorWilliam A. Ferrando
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Abstract
A silver coated superconducting ceramic powder made by (1) coating the superconducting ceramic powder particles with AgNO.sub.3 ; (2) melting the AgNO.sub.3 so that it wets and forms a uniform coating over the surfaces of the particles; and (3) decomposing the AgNO.sub.3 to form a thin, uniform coating of silver metal on the surfaces of the particles. The product is a loose powder of superconducting ceramic particels which are uniformly coated with a thin layer of silver metal. The powder can be cold worked (e.g., swaged, forged, etc.) to form superconducting structures such as rods or wires.
Claims21
A silver metal coated superconducting ceramic powder wherein the superconducting ceramic particles are each coated with a uniform layer of silver metal which is from about 0.02 to about 10 microns thick, wherein the silver metal comprises from about 1 to about 25 weight percent of the silver-coated superconducting ceramic powder with the superconducting ceramic material comprising the remainder, and wherein the silver-coated superconducting ceramic powder is a loose powder.
Dependencies are inferred from the claim text.