Properties of Compacts from Mixtures of Calcium Fluoride Micro- and Nanopowders
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Properties of Compacts from Mixtures of Calcium Fluoride Micro- and Nanopowders
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| Автор |
Ilves, V. G.
Sokovnin, S. Y. Zayats, S. V. Zuev, M. G. |
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| Тематика |
COMPACTS FROM MIXTURES OF MICRO- AND NANOPOWDERS OF CAF2
MAGNETIC PULSE AND STATIC PRESSING PHOTOLUMINESCENCE PULSED CATHODOLUMINESCENCE |
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| Описание |
In this work, compacts from mechanical mixtures of CaF2 micron powder (MCP) with CaF2 nanopowder (NP) additives were produced, with mass ratios of the mixture components ranging from 10:0.125 to 10:1, respectively, using magnetic pulse (MP) and static pressing (SP) methods. The effects of pressure (Pp) and pressing temperature (Tp), concentration and phase composition of the additive on the density and color of compacts were studied, taking into account the properties of the initial components of the mixtures. The evolution of pulsed cathodoluminescence (PCL) spectra and photoluminescence (PL) of compacts from pure powders and their mixtures depending on Pp, Tp and characteristics of initial CaF2 NP was also studied. A new near-infrared (NIR) band associated with fluoride vacancies was discovered with a maximum at ~765 nm in PCL spectra of compacts produced by MP at a temperature of 425 °C. A blue band at 435 nm associated with impurity oxygen vacancies in the CaF2 lattice was found in PL spectra compacts of pure NP and powder mixtures. The density of compacts of pure NP and MCP reached 89% of the theoretical density, and the density of compacts of mixtures did not exceed 78%. The defective structure and phase composition of the CaF2 NP had a decisive effect on the luminescent properties of compacts from mixtures of micro- and nanopowders. © 2022 by the authors.
Russian Science Foundation, RSF, (22-19-00239) The reported study was funded by Russian Science Foundation, project number 22-19-00239. |
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| Дата |
2024-04-08T11:07:00Z
2024-04-08T11:07:00Z 2022 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Ilves, VG, Sokovnin, SY, Zayats, SV & Zuev, MG 2022, 'Properties of Compacts from Mixtures of Calcium Fluoride Micro- and Nanopowders', Photonics, Том. 9, № 10, 782. https://doi.org/10.3390/photonics9100782
Ilves, V. G., Sokovnin, S. Y., Zayats, S. V., & Zuev, M. G. (2022). Properties of Compacts from Mixtures of Calcium Fluoride Micro- and Nanopowders. Photonics, 9(10), [782]. https://doi.org/10.3390/photonics9100782 2304-6732 Final All Open Access; Gold Open Access https://www.mdpi.com/2304-6732/9/10/782/pdf?version=1666534543 https://www.mdpi.com/2304-6732/9/10/782/pdf?version=1666534543 http://elar.urfu.ru/handle/10995/131383 10.3390/photonics9100782 85140725491 000876670200001 |
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| Язык |
en
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| Связанные ресурсы |
info:eu-repo/grantAgreement/RSF//22-19-00239
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
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| Формат |
application/pdf
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| Издатель |
MDPI
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| Источник |
Photonics
Photonics |
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