Patent ID: 8522420

Claim:
A method for manufacturing high temperature superconducting coils with electrical insulation, comprising in sequence the steps of: (a) forming an electromagnet coil device from a winding of superconductive precursor powder-in-tube composite round wire, with the wire turns being separated by a ceramic-glass insulation comprised of a mixture of ceramic and glass fibers and a carbonaceous binder; (b) removing the binder of the ceramic insulation in a burn-off cycle by combustion in an oxygen-containing environment of a heating vessel at an elevated temperature below the partial melting point of the precursor superconducting powder and ceramic-glass insulation; (c) evacuating the heating vessel at a reduced temperature at about room temperature; (d) introducing oxygen gas into the vessel; and (e) increasing the temperature in the vessel to the peak reaction heat treatment temperature for forming the ceramic insulated superconducting wire, while said electromagnet coil device is in said vessel.