Temperature-concentration fields of the crystallization of YbAl3(BO3)4 from high-temperature melt solutions based on potassium trimolybdate
Autor: | L. V. Nekrasova, N. I. Leonyuk |
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Rok vydání: | 2007 |
Předmět: | |
Zdroj: | Crystallography Reports. 52:728-734 |
ISSN: | 1562-689X 1063-7745 |
DOI: | 10.1134/s1063774507040220 |
Popis: | The phase relationships in the YbAl3(BO3)4-K2Mo3O10-B2O3-Yb2O3 multicomponent system are investigated in the temperature range 1150–1000°C within the stability region of the YbAl3(BO3)4 compound. The region of single-phase crystallization of the YbAl3(BO3)4 borate is revealed in the section corresponding to the composition containing 15 wt % YbAl3(BO3)4. For the same composition, it is demonstrated that there exists a correlation between the temperatures of saturation of melt solutions with the YbAl3(BO3)4 borate and the composition of the solvent, namely, the contents of B2O3, K2Mo3O10, and Yb2O3 in the solvent. The temperature dependences of the solubility of the YbAl3(BO3)4 compound at different contents are determined for melts of two compositions: melt I containing 55 mol % K2Mo3O10 and 45 mol % B2O3 and melt II containing 55 mol % K2Mo3O10, 40 mol % B2O3, and 5 mol % Yb2O3. The specific features of the crystallization of the YbAl3(BO3)4 compound are analyzed and compared with those of the yttrium, neodymium, gadolinium, and erbium aluminum borates studied previously. |
Databáze: | OpenAIRE |
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