Synthesis, structure and properties of ceramics based on aluminium oxynitride (AlON), obtained by the method of spark plasma sintering

Zabelin D.A., Chaynikova A.S., Kachaev A.A., Osin I.V., Grachshencov D.V.
UDC
666.7
DOI
10.18577/2307-6046-2019-0-6-13-19
Article PDF (Russian) (649.98 KB)
How to cite
Zabelin D.A., Chaynikova A.S., Kachaev A.A., Osin I.V., Grachshencov D.V. Synthesis, structure and properties of ceramics based on aluminium oxynitride (AlON), obtained by the method of spark plasma sintering // Proceedings of VIAM. 2019. No. 6. DOI: 10.18577/2307-6046-2019-0-6-13-19. URL: https://test.viam.ru/en/journal/2019/6/2
Keywords
aluminum oxynitride, transparent ceramics, spark plasma sintering, microhardness, crack resistance, oxynitride ceramics.
Abstract

Ceramics based on aluminum oxynitride (AlON) by the method of spark plasma sintering (SPS) were synthesized. It has been established that a decrease in the particle size of the initial powders leads to an intensification of the AlON phase formation process and an increase in the physicomechanical properties of ceramics. It is shown that the introduction of sintering additive Y2O3 contributes to a more complete transformation of the initial components into the AlON phase due to the formation of a liquid phase at the grain boundaries. It was revealed that an increase in the sintering temperature by the SPS method from 1600 to 1700°С leads to a decrease in the va-lues of density and physicomechanical properties of ceramics based on aluminium oxynitride.

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