FIELD: ceramic articles. SUBSTANCE: method involves addition of alkaline-earth or rare-earth elements, forming, roasting of blanks at 1850-1900 C in nitrogen flow and annealing of caked articles at 1820-1880 C in the gas mixture flow consisting of nitrogen and hydrogen (85-95 and 5-15 vol.%, respectively). EFFECT: improved method of ceramic preparing. 1 tbl
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