METHOD FOR MANUFACTURING BIAXIALLY TEXTURED SUBSTRATE IN THE FORM OF COPPER-NICKEL-BASED TRIPLE ALLOY TAPE FOR EPITAXIAL DEPOSITION OF BUFFER AND HIGH-TEMPERATURE SUPERCONDUCTING LAYERS ON IT Russian patent published in 2021 - IPC C22F1/08 C22C9/06 H01B12/06 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, in particular to methods for obtaining biaxially textured substrates for epitaxial deposition of buffer and high-temperature superconducting layers on it for tape high-temperature superconductors (HTS) of the second generation. A method for manufacturing biaxially textured substrate in the form of copper-nickel-based triple alloy tape for epitaxial deposition of buffer and high-temperature superconducting layers on it includes smelting with the introduction of a niobium, or molybdenum, or tungsten alloying element into a copper-nickel alloy to obtain a copper-nickel-based triple alloy ingot, forging the ingot into a workpiece in the form of a rod, cold reversible rolling of the workpiece to a degree of deformation of ≥97% with obtaining a tape, and recrystallization annealing of the resulting tape at a temperature of ≥1000°C. At the same time, a triple alloy is smelted, at. %: niobium ≤2.5, or molybdenum ≤2.0, or tungsten ≤2.0, nickel - 40-45, copper - the rest.

EFFECT: high strength and sharpness of crystallographic texture are obtained, while maintaining non-magnetism at the operating temperature of the superconductor of 77 K.

2 cl, 3 dwg, 1 tbl, 1 ex