High-temperature silicon carbide ceramic sintered with erbium oxide

E. S. Tverdokhleb, N. A. Golubeva, М. Г. Лисаченко

2024

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DOI 10.17073/1683-4518-2024-10-21-24

Data confidence 70 medium

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Abstract

Microstructure development and phase formation processes during sintering of silicon carbide-based materials with Er2O3‒AlN sintering additive were investigated. Their mechanical properties were measured as a function of Er2O3‒AlN content and proportion of α- and β-SiC powders in the initial mixtures. Silicon carbide-based ceramics with Er2O3‒AlN sintering additive with flexural strength at room temperature (677±18) МPa, flexural strength at 1600 °С (472±12 МPа), fracture toughness ~ 5,8 МPа·m1/2 were fabricated.