Yuta Nakagoshi, Yoshikazu Suzuki, Morphology Control of Pseudobrookite-Type MgTi2O5 Powders by LiF Doping, ILCPA Volume 46, International Letters of Chemistry, Physics and Astronomy (Volume 46)
https://www.scipress.com/ILCPA.46.37
Abstract:
    Well-controlled fine MgTi<sub>2</sub>O<sub>5</sub> powders, with pseudobrookite-type structure, are desired toward various industrial applications, however, commercial powders are hardly available to date. In this study, we focused the processing and characterization of well-controlled MgTi<sub>2</sub>O<sub>5</sub> powders with/without LiF additive. MgCO<sub>3</sub> (basic) and TiO<sub>2</sub> anatase powders with/without 0.5 wt. % LiF additive were calcined in air at 1100 °C for 2 h to obtain the MgTi<sub>2</sub>O<sub>5</sub> powders. SEM observation revealed that the non-doped MgTi<sub>2</sub>O<sub>5</sub> powder consisted of equiaxed particles with the diameter of 0.5-1.5 μm, whereas, the LiF-doped MgTi<sub>2</sub>O<sub>5</sub> powder consisted of elongated particles with the length of ~ 5-10 μm and the diameter of ~1.0-1.5 μm. The smooth surface of elongated MgTi<sub>2</sub>O<sub>5</sub> particles demonstrates the effect of LiF doping as a flux, i.e., liquid phase formation during the reaction.
Keywords:
    Elongated Grains, LiF, MgTi<sub>2</sub>O<sub>5</sub>, Microstructure, Mineralizer, Porous Ceramics, Pseudobrookite