Ytterbium Oxide Influence on the SHS Parameters and Phase Make-Up of Silicon Nitride Based Compositions

Self-propagating high-temperature synthesis (SHS) was used to prepare SHS compositions based on the system Si 3 N 4 –Yb 2 O 3 system. Synthesis was conducted in a nitrogen atmosphere at 4 MPa in a 30 L reactor. The weight of the loaded charge was 3 kg. It was ascertained that the amount of ytterbium...

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Bibliographic Details
Published in:Glass and ceramics 2024, Vol.80 (9-10), p.417-419
Main Authors: Shibakov, I. A., Zakorzhevsky, V. V., Kovalev, I. D.
Format: Article
Language:English
Subjects:
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Combustion temperature
Composites
Glass
Materials Science
Natural Materials
Phase composition
Self propagating high temperature synthesis
Silicon nitride
Ytterbium
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Summary:Self-propagating high-temperature synthesis (SHS) was used to prepare SHS compositions based on the system Si 3 N 4 –Yb 2 O 3 system. Synthesis was conducted in a nitrogen atmosphere at 4 MPa in a 30 L reactor. The weight of the loaded charge was 3 kg. It was ascertained that the amount of ytterbium oxide in the charge affects the combustion temperature and the phase composition of the synthesis products. As the proportion of ytterbium oxide in the charge increases, the α-Si 3 N 4 content decreases, and the secondary phases are represented by quaternary silicon ytterbium oxynitride and ytterbium disilicate.
ISSN:0361-7610
1573-8515
DOI:10.1007/s10717-023-00625-2