Synthesis of Hafnium Diboride Ceramic Powders by Carbothermal Reduction

The process of obtaining hafnium diboride via the carbothermal reduction of hafnium oxide, which involves heat treatment in a vacuum furnace and a spark plasma sintering unit, was studied. When the charge was heat treated in a vacuum furnace, hafnium diboride powder characterized by the presence of...

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Bibliographic Details
Published in:Glass and ceramics 2024, Vol.81 (1-2), p.24-33
Main Authors: Shchegoleva, N. E., Lebedeva, Yu. E., Kolyshev, S. G., Vaganova, M. L., Chainikova, A. S.
Format: Article
Language:English
Subjects:
Ceramic powders
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Glass
Hafnium compounds
Hafnium oxide
Heat treatment
Materials Science
Natural Materials
Sintering (powder metallurgy)
Spark plasma sintering
Vacuum furnaces
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Summary:The process of obtaining hafnium diboride via the carbothermal reduction of hafnium oxide, which involves heat treatment in a vacuum furnace and a spark plasma sintering unit, was studied. When the charge was heat treated in a vacuum furnace, hafnium diboride powder characterized by the presence of secondary crystalline phases was obtained within a temperature range of 1500 – 1700°C. Monophase hafnium diboride powder having a fine-grained uniform structure was obtained using the spark plasma sintering method at a temperature of 1500°C.
ISSN:0361-7610
1573-8515
DOI:10.1007/s10717-024-00653-6