Microstructural evolution of some MgO-TiO2 and MgO-Al2O3 powder mixtures during high-energy ball milling and post-annealing studied by X-ray diffraction

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 f...

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Bibliographic Details
Published in:Journal of alloys and compounds 2004-05, Vol.370 (1-2), p.296-301
Main Authors: STUBICAR, N, TONEJC, A, STUBICAR, M
Format: Article
Language:English
Subjects:
Exact sciences and technology
Physics
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Summary: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 1200DGC, respectively.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2003.09.026