Synthesis and study of the properties of yttrium oxide sols

Lebedeva Yu.E., Chaynikova A.S., Shchegoleva N.E., Belyachenkov I.O., Turchenko M.V.
UDC
541.182
DOI
10.18577/2307-6046-2023-0-2-32-41
Article PDF (Russian) (1017.24 KB)
How to cite
Lebedeva Yu.E., Chaynikova A.S., Shchegoleva N.E., Belyachenkov I.O., Turchenko M.V. Synthesis and study of the properties of yttrium oxide sols // Proceedings of VIAM. 2023. No. 2. DOI: 10.18577/2307-6046-2023-0-2-32-41. URL: https://test.viam.ru/en/journal/2023/2/3
Keywords
yttrium oxide, sol, ceramic materials, sintering, sol-gel method, phase formation
Abstract

Sols of yttrium oxide with a Y2O3 content of 1, 5, and 10 wt. % have been synthesized. The structure and properties of sols have been studied: particle size and morphology, ζ-potential. According to the results of the study by photon correlation spectroscopy, the distribution of particle sizes in sols was determined: the average particle size was 49.3 nm for a sol with a Y2O3 content of 1 wt. %, 67 nm for a sol with a Y2O3 content of 5 wt. % and 232 nm for a sol with a Y2O3 content 10 wt. %. According to the results of XRD studies, the average size of crystallites of yttrium oxide nanopowder was 38.5 nm, which correlates with the results of the TEM study – 30–50 nm. The ζ-potential of the sols decreases with an increase in the concentration of yttrium oxide from –0.14 mV to –3.21 mV, however, it is quite small and indicates a low aggregative stability of the sols.

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