Ex situ Raman mapping study of mechanism of cordierite formation from stoichiometric oxide precursors

October 5, 2018

Title

Ex situ Raman mapping study of mechanism of cordierite formation from stoichiometric oxide precursors

Author

Nguyen Huu Huy Phuc, Teruhisa Okuno, Atsunori Matsuda, Hiroyuki Muto

Year

2014

Journal

Journal of the European Ceramic Society

Abstract

Ex situ Raman spectroscopy and Raman mapping showed that at temperatures below 1300 °C, magnesia reacted with either alumina or silica to form magnesium aluminate (spinel) or magnesium silicate. At 1300 °C or higher, the reaction between magnesium silicate and alumina, or spinel and silica, led to cordierite formation. Moreover, the presence of silica and spinel, and the disappearance of magnesium silicate at 1400 °C, indicated that cordierite formation was more favored by the reaction between alumina and magnesium silicate than by that between silica and spinel.

Instrument

NRS-7100

Keywords

Raman Imaging Microscopy, Raman spectroscopy, Solid-state reaction, Cordierite