PROCESS FOR PREPARING SUPERCONDUCTIVE OXIDE MATERIAL Russian patent published in 1994 - IPC

FIELD: electronic engineering. SUBSTANCE: components are compacted to a relative density of at least 0.45. The combustion of the compacted mixture is initiated in a vacuum or an inert gas by heating it to 650-950 C at a temperature rise rate of at least 200 C per minute, and the combustion product is heat treated in an oxygen-containing medium at 800-950 C for 10-0.2 hr, respectively. The charge components include exothermic mixture of an oxide of rare earth elements selected from the group consisting of yttrium, lanthanum, lanthanides with barium peroxide and copper. The compression strength of the resultant porous material 380 kg/cm² and the bending strength 150 kg/cm². EFFECT: improved strength while retaining high superconductive characteristics.