METHOD OF OBTAINING GAS-TIGHT CERAMICS BASED ON CERIUM OXIDE AND BARIUM CERATE

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to field of electronics, namely to methods of obtaining gas-tight composite electrolytes with mixed oxygen-ion and proton conductivity. Claimed is method of obtaining gas-tight ceramics based on cerium oxide and barium cerate by sintering powders with composition 0.3BaCe_0.8Gd_0.2O_3-δ-0.7Ce_0.8Gd_0.2O_2-δ, synthesised by method of solid-phase synthesis or method of burning nitrates and citric acid. Before sintering 1 mol % of Ba₂CuO₃ is added to powders, which ensures formation of liquid phase of barium cuprate in the process of burning and quick sintering and compression of ceramics at lower temperatures.;EFFECT: reduction of temperature of sintering and time of powder exposure time and energy consumption connected with it without deterioration of electric properties of obtained ceramics.;2 ex, 1 tbl, 1 dwg