METHOD OF PRODUCING HIGH-TEMPERATURE SUPERCONDUCTING CERAMIC Russian patent published in 2016 - IPC C04B35/45 C04B35/505 C04B35/626 B82Y40/00 

FIELD: ceramic industry.

SUBSTANCE: invention relates to a method of producing superconducting ceramic materials of different density based on composite oxide YBa₂Cu₃O_7-δ, primarily containing a phase of nanostructured powders, optimally saturated with oxygen, for making components of electronic engineering and power engineering. Yttrium, barium and copper nitrates are mixed and dissolved in water at a ratio of material: water equal to 0.03:1, concentrated nitric acid is added until complete dissolution of salts and glycerin in amount of 0.5-1.5% of total amount of aqueous solution of nitrates, evaporated under continuous stirring until formation of thick liquid, flashing thereof with formation of precursor in form of powder, which, in its turn, is heated to temperature in range of 350 °C-915 °C with holding at said temperature for 1-20 hours to form corresponding particle size distribution, compacted at 50-200 MPa and sintered at 920 °C for 0.5-5 hours.

EFFECT: technical effect is simple and highly efficient method of producing high-temperature superconducting ceramic of different density, primarily containing phase YBa₂Cu₃O_7-δ, optimally saturated with oxygen.

1 cl, 13 ex, 39 dwg