Microstructural evolution of some MgO–TiO2 and MgO–Al2O3 powder mixtures during high-energy ball milling and post-annealing studied by X-ray diffraction |
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| Authors: | N Stubi
ar A Tonejc M Stubi
ar |
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| Affiliation: | aDepartment of Chemistry, Faculty of Science, University of Zagreb, Marulićev trg 19/II, HR-10001 Zagreb, Croatia;bDepartment of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, HR-10002 Zagreb, Croatia |
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| Abstract: | High-energy dry ball-mill and post-anneal processing were applied to synthesize MgTiO3 and Mg2TiO4 single crystalline phases from the predetermined compositions of MgO–TiO2 powder mixtures. Also, the experiments were performed to show that it is possible to prepare MgAl2O4 single crystalline phase from the predetermined composition of MgO–Al2O3 powder mixture only by employing high-energy dry ball milling, i.e. without post-annealing the milled samples. In contrast, fully developed single crystalline powders of MgTiO3 and Mg2TiO4 were obtained after post-annealing the milled samples for 1 h at 900 and 1200 °C, respectively. |
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| Keywords: | Author Keywords: Preparation of insulators: MgTiO3 Mg2TiO4 and MgAl2O4 single-phase powders MgO–TiO2 and MgO–Al2O3 powder mixtures High-energy ball milling Post-anneal processing X-ray diffraction method Oxide materials Insulators Mechanochemical processing X-ray diffraction |
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