Morphology Control of Pseudobrookite-Type MgTi2O5 Powders by LiF Doping

Nakagoshi, Yuta; Suzuki, Yoshikazu

doi:10.18052/www.scipress.com/ILCPA.46.37

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Morphology Control of Pseudobrookite-Type MgTi₂O₅ Powders by LiF Doping

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Abstract:

Well-controlled fine MgTi₂O₅ 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 MgTi₂O₅ powders with/without LiF additive. MgCO₃ (basic) and TiO₂ anatase powders with/without 0.5 wt. % LiF additive were calcined in air at 1100 °C for 2 h to obtain the MgTi₂O₅ powders. SEM observation revealed that the non-doped MgTi₂O₅ powder consisted of equiaxed particles with the diameter of 0.5-1.5 μm, whereas, the LiF-doped MgTi₂O₅ 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 MgTi₂O₅ particles demonstrates the effect of LiF doping as a flux, i.e., liquid phase formation during the reaction.

Info:

Periodical:

International Letters of Chemistry, Physics and Astronomy (Volume 46)

Pages:

37-41

DOI:

https://doi.org/10.18052/www.scipress.com/ILCPA.46.37

Citation:

Y. Nakagoshi and Y. Suzuki, "Morphology Control of Pseudobrookite-Type MgTi₂O₅ Powders by LiF Doping", International Letters of Chemistry, Physics and Astronomy, Vol. 46, pp. 37-41, 2015

Online since:

January 2015

Authors:

Yuta Nakagoshi, Yoshikazu Suzuki

Keywords:

Elongated Grains, LiF, MgTi₂O₅, Microstructure, Mineralizer, Porous Ceramics, Pseudobrookite

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Open Access

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Creative Commons Attribution 4.0 International License

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Cited By:

[1] Y. Nakagoshi, Y. Suzuki, "Pseudobrookite-type MgTi2O5 water purification filter with controlled particle morphology", Journal of Asian Ceramic Societies, Vol. 3, p. 334, 2015

DOI: https://doi.org/10.1016/j.jascer.2015.06.005

[2] M. He, B. Winkler, J. Bauer, L. Bayarjargal, J. Ruiz-Fuertes, I. Alencar, W. Morgenroth, K. Refson, V. Milman, "Lattice dynamics and Mg/Ti order in orthorhombic pseudobrookite-type MgTi2 O5", Journal of Alloys and Compounds, Vol. 699, p. 16, 2017

DOI: https://doi.org/10.1016/j.jallcom.2016.12.217