MANUFACTURING OF YBCO GRADIENT CERAMIC MATERIAL USING PLASMA PROCESSING Russian patent published in 2023 - IPC H01B12/00 C04B35/488 B82Y30/00 

FIELD: superconducting materials.

SUBSTANCE: method for modifying the structure of superconducting ceramics YBa₂Cu₃O_7-δ (YBCO), used to modify the surface of ceramics in the form of compaction with the formation of fused grains with monolithic conjugation with each other and recrystallization with a change in the ordering of oxygen in the modified structure of the ceramic material. After heat treatment of nanostructured superconducting ceramic material composition YBa₂Cu₃O_7-δ (YBCO) at 350-915°C and pressing at a pressure of at least 100 MPa, followed by sintering for 1÷5 hours at 920°C, the surface of the material is exposed to a plasma flow of argon, nitrogen or their mixtures with oxygen, with a plasma gas supply rate of 0.2-1.6 g/s, with a surface treatment duration of 25-75 s, current strength of 150-300 A, voltage 25-27 V, at a distance (L) from the plasma torch nozzle exit of 20-75 mm.

EFFECT: obtaining nanostructured superconducting ceramics composition YBCO with gradient properties of the modified structure.

1 cl, 9 dwg, 1 tbl