This paper reports the major results of research and development of thermochemically nanofabricated high temperature superconducting (HTS) ceramic leads and multifilament HTS YBa2Cu3O7–x (HTS-YBCO) electric wire. Advanced scientific features of the created ceramic engineering processing based on ceramic polymer (silicone) nanotechnology, including ceramic coating on continuous metal filaments, are discussed. Thermochemical nanofabrication of the honeycomb-like nanoarchitecture resulted in intergrain superconductivity of the fully dense sintered YBCO macroceramics, which is close to the inner grain superconductivity of the initial YBCO particles. The developed multifilament HTS-YBCO wire is cost effective, reliable, flexible and as workable as copper wire, but conducts ∼100 times more electricity with insignificant heat losses.
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