THE EFFECT OF THE CHOICE OF THE STARTING MATERIAL ON THE PHASE COMPOSITION AND PHASE STABILITY OF ZRO<sub>2</sub> PARTICLES SYNTHESIZED BY THE HYDROTHERMAL METHOD-Reference-Cited by-同舟云学术

THE EFFECT OF THE CHOICE OF THE STARTING MATERIAL ON THE PHASE COMPOSITION AND PHASE STABILITY OF ZRO<sub>2</sub> PARTICLES SYNTHESIZED BY THE HYDROTHERMAL METHOD

Published:2024-03-26 Issue:1 Volume:21 Page:130-139
ISSN:2959-8109
Container-title:Herald of the Kazakh-British technical university
language:
Short-container-title:jour

Author:

Garanin Yu. A.¹^ORCID

Affiliation:

1. L.N. Gumilyov Eurasian National University; Astana Branch of the Institute of Nuclear Physics; «Kazakhstan Advanced Science Research Center» LLP

Abstract

In this work, the phase composition, microstructure and phase stability of zirconium dioxide samples obtained by hydrothermal synthesis from various starting materials were investigated. It was found that when using ZrOCl2·8H2O as a starting material, zirconium dioxide particles containing monoclinic and tetragonal (cubic) phases are formed, at the same time, when using ZrO(NO3)2·2H2O as a starting material, only the monoclinic phase was identified in the samples. The CSR dimensions calculated using the Scherrer equation are in the range from 9 to 40 nm. Analysis of SEM images of experimental samples showed that nanoparticles form conglomerates with sizes of several microns. A study of the phase stability of the t, c – ZrO2 phase from temperature exposure showed that t, c – ZrO2 is a metastable phase with CSR sizes up to annealing of 10 nm. With an increase in the annealing temperature, the metastable tetragonal (cubic) phase of ZrO2 gradually transforms into a monoclinic one, due to the processes of minimizing surface energy and particle proliferation, as well as sintering conglomerates into larger monolithic particles.

Publisher

Kazakh-British Technical University

Reference21 articles.

1. Mandal S. et al. Designing environment-friendly chromium-free Spinel-Periclase-Zirconia refractories for Ruhrstahl Heraeus degasser. Journal of the American Ceramic Society, vol. 103, no. 12, 2020, pp. 7095–7114, https://doi.org/10.1111/jace.17402

2. Kozlovskiy A.L. et al. Study of Radiation Damage Kinetics in Dispersed Nuclear Fuel on Zirconium Dioxide Doped with Cerium Dioxide. Journal of Composites Science, vol. 7, no. 7, 2023, P. 277. https://doi.org/10.3390/jcs7070277

3. Albayrak S. et al. Influence of nano-scaled zirconia particles on the electrical properties of polymer insulating materials. IEEE Transactions on Dielectrics and Electrical Insulation, vol. 19, no.1, 2012, pp. 76–82. https://doi: 10.1109/TDEI.2012.6148504.

4. Clarke D.R., Levi C.G. Materials Design for the Next Generation Thermal Barrier Coatings. Annu Rev Mater Res, vol. 33, no. 1, 2023, pp. 383–417. https://doi.org/10.1146/annurev.matsci.33.011403.113718.

5. Hannink R.H.J., Murray M.J., Scott H.G. Friction and wear of partially stabilized zirconia: Basic science and practical applications. Wear. Elsevier, vol. 100, no. 1–3, 1984, pp. 355–366. https://doi.org/10.1016/00431648(84)90021-8.