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The effect of the Al2O3−Y2O3−ZrO2 sintering additive on compaction and mechanical properties of silicon carbide ceramics was studied in this work. The sintering additive was obtained by plasma-chemical synthesis. Sintering ceramic was carried out by hot pressing in the temperature range 1700-1800°C. With an increase in temperature, an increase in density and mechanical properties occurs. The ceramic material has a linear thermal expansion coefficient in the temperature range 20-1600°C equal to 3.9х10−6К−1. [ABSTRACT FROM AUTHOR]

Monophase ceramics based on silicon oxonitride was obtained in one technological stage, combining the synthesis of the aluminum oxonitride phase and its further densification by hot pressing at 1850°C in a nitrogen atmosphere. The obtained samples were characterized by scanning electron microscopy and X-ray phase analysis; the mechanical properties of the ceramic samples were measured. [ABSTRACT FROM AUTHOR]

The effect of the Al2O3−Y2O3−ZrO2 sintering additive on compaction and mechanical properties of silicon carbide ceramics was studied in this work. The sintering additive was obtained by plasma-chemical synthesis. Sintering ceramic was carried out by hot pressing in the temperature range 1700-1800°C. With an increase in temperature, an increase in density and mechanical properties occurs. The ceramic material has a linear thermal expansion coefficient in the temperature range 20-1600°C equal to 3.9х10−6К−1. [ABSTRACT FROM AUTHOR]