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Volume 5
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10.3390/ceramics5020017
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Review

Synthesis of Submicron, Nanostructured Spherical Powders of Y3Al5O12-Phases by the Method by Ultrasonic Spray Pyrolysis and Investigation of Their Structure and Properties

by
Rainer Gadow
1,
Valery I. Antipov
2,
Alexey G. Kolmakov
2,*,
Leonid V. Vinogradov
2,
Maxim D. Larionov
2 and
Yuliya E. Mukhina
2
1
Institute for Manufacturing Technologies of Ceramic Components and Composites, University Stuttgart, Allmandring 7b, D-70569 Stuttgart, Germany
2
Baikov Institute of Metallurgy and Materials Science RAS, Leninsky prospect, 49, 119334 Moscow, Russia
*
Author to whom correspondence should be addressed.
Ceramics 2022, 5(2), 201-209; https://doi.org/10.3390/ceramics5020017
Submission received: 28 March 2022 / Revised: 25 April 2022 / Accepted: 18 May 2022 / Published: 23 May 2022
(This article belongs to the Special Issue Advances in Ceramics)
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Abstract

The results of laboratory studies of the submicron Y3Al5O12 (YAG) phase powders synthesized by ultrasonic spray pyrolysis are presented. A structural-phase analysis of aerosol powders was carried out and an assessment of the tendency of the synthesized powders to sintering was made. The working solution for the aerosol was prepared on the basis of distilled water with aluminum nitrate hexahydrate Al(NO3)3 x 6H2O and yttrium nitrate hexahydrate Y(NO3)3 x 6H2O dissolved in specified proportions. Spherical submicron nonagglomerated powders of Y3Al5O12–phase with a small YAlO3-phase content were synthesized by this method. Powder granules with a diameter of 0.75 microns had a nano-fragmentary polycrystalline structure with an average crystal size of 16 nm. During the sintering of powders with such a unique structure, diffusion mass transfer processes are activated, which contributes to a more efficient compaction of the material. Aerosol powder sintering experiments have shown that the best results are achieved when the process is carried out at 1700 °C for 6 h. As a result, a dense YAG-ceramic material was obtained, the structure of which does not contain residual pores and is characterized by a uniform distribution of equiaxed grains.
Keywords: nano-structured powders; aerosol powders; laser YAG ceramics; ultrasonic spray pyrolysis; Y3Al5O12 ceramic nano-structured powders; aerosol powders; laser YAG ceramics; ultrasonic spray pyrolysis; Y3Al5O12 ceramic

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MDPI and ACS Style

Gadow, R.; Antipov, V.I.; Kolmakov, A.G.; Vinogradov, L.V.; Larionov, M.D.; Mukhina, Y.E. Synthesis of Submicron, Nanostructured Spherical Powders of Y3Al5O12-Phases by the Method by Ultrasonic Spray Pyrolysis and Investigation of Their Structure and Properties. Ceramics 2022, 5, 201-209. https://doi.org/10.3390/ceramics5020017

AMA Style

Gadow R, Antipov VI, Kolmakov AG, Vinogradov LV, Larionov MD, Mukhina YE. Synthesis of Submicron, Nanostructured Spherical Powders of Y3Al5O12-Phases by the Method by Ultrasonic Spray Pyrolysis and Investigation of Their Structure and Properties. Ceramics. 2022; 5(2):201-209. https://doi.org/10.3390/ceramics5020017

Chicago/Turabian Style

Gadow, Rainer, Valery I. Antipov, Alexey G. Kolmakov, Leonid V. Vinogradov, Maxim D. Larionov, and Yuliya E. Mukhina. 2022. "Synthesis of Submicron, Nanostructured Spherical Powders of Y3Al5O12-Phases by the Method by Ultrasonic Spray Pyrolysis and Investigation of Their Structure and Properties" Ceramics 5, no. 2: 201-209. https://doi.org/10.3390/ceramics5020017

APA Style

Gadow, R., Antipov, V. I., Kolmakov, A. G., Vinogradov, L. V., Larionov, M. D., & Mukhina, Y. E. (2022). Synthesis of Submicron, Nanostructured Spherical Powders of Y3Al5O12-Phases by the Method by Ultrasonic Spray Pyrolysis and Investigation of Their Structure and Properties. Ceramics, 5(2), 201-209. https://doi.org/10.3390/ceramics5020017

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