LAPSE:2023.35289
Published Article
LAPSE:2023.35289
Electrical Properties and Chemical Resistance of the Composites (1-x)Gd2Zr2O7·xMgO in Li-Containing Chloride Melts
April 28, 2023
Composites of (1-x)Gd2Zr2O7·xMgO were prepared by mixing gadolinium zirconate with freshly precipitated Mg(OH)2 followed by heat treatment at 1500 °C. Small concentrations of magnesium oxide dissolved in the complex oxide matrix of Gd2Zr2O7. This led to decrease in the lattice parameters of the matrix phase and a complex redistribution of Gd and Zr over the A and B sublattices. According to the impedance spectroscopy results of the studied samples, for (1-x)Gd2Zr2O7·xMgO (x = 0.05, 0.07, 0.10), the ionic conductivity was slightly higher than that for the undoped Gd2Zr2O7. The share of dominant ion transport did not change upon doping with magnesium oxide. The composites showed chemical resistance in a lithium halide (LiCl) melt and interacted with LiCl-xLi2O (x = 2 wt.%, 4 wt.%) melts at 650 °C with the formation of a Gd2O3 phase or a mixture of phases (Gd2O3, Li2ZrO3, ZrO2, LiGdO2, or LiGdCl2) on the ceramic surface, respectively.
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Keywords
chemical stability in Li-containing halide melts, composite, gadolinium zirconate, Gd2Zr2O7, oxide ion conductivity, pyrochlore
Subject
Suggested Citation
Anokhina I, Animitsa I, Erzhenkov M, Voronin V, Kadyrova N, Zaikov Y. Electrical Properties and Chemical Resistance of the Composites (1-x)Gd2Zr2O7·xMgO in Li-Containing Chloride Melts. (2023). LAPSE:2023.35289
Author Affiliations
Anokhina I: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Yekaterinburg, Russia [ORCID]
Animitsa I: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Yekaterinburg, Russia [ORCID]
Erzhenkov M: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Yekaterinburg, Russia [ORCID]
Voronin V: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Yekaterinburg, Russia; Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences, 620108 Yekaterinburg, Russia
Kadyrova N: Institute of Solid State Chemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Yekaterinburg, Russia
Zaikov Y: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Yekaterinburg, Russia
Animitsa I: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Yekaterinburg, Russia [ORCID]
Erzhenkov M: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Yekaterinburg, Russia [ORCID]
Voronin V: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Yekaterinburg, Russia; Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences, 620108 Yekaterinburg, Russia
Kadyrova N: Institute of Solid State Chemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Yekaterinburg, Russia
Zaikov Y: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Yekaterinburg, Russia
Journal Name
Processes
Volume
11
Issue
4
First Page
1217
Year
2023
Publication Date
2023-04-14
Published Version
ISSN
2227-9717
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PII: pr11041217, Publication Type: Journal Article
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LAPSE:2023.35289
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doi:10.3390/pr11041217
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Apr 28, 2023
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