Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)
Објеката
- Тип
- Рад у часопису
- Верзија рада
- објављена верзија
- Језик
- енглески
- Креатор
- Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović
- Извор
- Physics and Chemistry of Minerals
- Издавач
- Springer Science and Business Media LLC
- Датум издавања
- 2014
- Сажетак
- Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization and activation of precursors. During the highpressure and high-temperature synthesis (HPS) process at 4 GPa and 1,200 °C, sphene undergoes into phase transition, from room-temperature phase P21/a to high-temperature phase A2/a. Evidence of that structural phase transition is given in this paper using infrared, Raman spectroscopy and X-ray powder diffraction. Rietveld refinement was employed to get the structural information of the synthesized powder. The most important structural change due to phase transition, the disappearance of the characteristic outof-center distortion of the Ti atom and moving to the center of octahedra, was confirmed. HPS is an effective method for producing full-dense ceramics without any additives. Reduction of particle size occurred during high-pressure compaction. Microstructure and particle size of both phases were analyzed by scanning electron microscopy.
- том
- 41
- Број
- 10
- почетак странице
- 775
- крај странице
- 782
- doi
- 10.1007/s00269-014-0693-x
- issn
- 0342-1791
- Subject
- Sphene, Phase transition, Raman spectroscopy, X-ray diffraction, SEM, IR
- Шира категорија рада
- M20
- Ужа категорија рада
- М22
- Права
- Затворени приступ
- Лиценца
- All rights reserved
- Формат
Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović. "Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)" in Physics and Chemistry of Minerals, Springer Science and Business Media LLC (2014). https://doi.org/10.1007/s00269-014-0693-x
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