PERFECTIONNEMENTS AUX PROCEDES DE FABRICATION DE CORPS SUPRACONDUCTEURS, NOTAMMENT DE CORPS SUPRACONDUCTEURS CREUX STABILISES, ET PRODUITS OBTENUS

摘要

To make hollow stabilized superconductor bodies a core of two or more concentric materials is prepared, the center material having a low-melting point and the other being chemically, physically or biologically degradable. The core is introduced into a first stabilizing material; the thus constituted assembly is drawn; and the external surface of the drawn product is lined with superconducting elements. The subassembly thus developed is introduced into a second stabilizing material and the block thus formed is again drawn until it has the requisite dimensions and in such a manner that the two stabilizing materials will cold-weld and embed the superconductor elements therein. Then the material or materials constituting the above-mentioned core are successively removed, the center core material by melting, or vaporization, and the outer core material by dissolving, or other physical, or chemical or biological methods.