Effect of TiO2 on the color generation in celadon glaze

Abstract

In aprevious study, the mutual interaction between Fe2O 3 and TiO2 was found to influence the color of celadon glaze. Celadon samples were prepared with varying concentrations of TiO 2 at a fixed level of Fe2O3. The electronic states of Fe and Ti were analyzed by Mösbauer spectroscopy and electron spin-resonance spectroscopy, respectively. These results were examined with the celadon colors measured according to CIELAB values. This study revealed that an increase of Ti3+ in the glassy phase decreased the Fe 2+/Fe3+ ratio, resulting in a color change of the celadon samples in the GY and Y groups. The maximum reflectance wavelength was shifted from 505 nm to 610 nm with an increase in the TiO2 concentration.