SUNG-Min. Lee, JUNG Whan Yoo,  HYUNG-Tae Kim

(Whiteware and Structural Ceramics Division, Korea Institute of Ceramic Engineering and Technology, Seoul 153- -801, Korea)

Abstract: The crstallization behavior of a luster glaze containing ceria has been investigated. When glazed specimens were sintered at 1100℃, crystalline ceta particles were precipitated preterentially with (100) planes parall to the specimen surface with the size of around 200 nm. The particle population in the surface region was much higher than inside glaze, covering over 60% of the specimen surface area. Crsallization of the particles with preferred orientation was promoted, after the removal of internal interface through complete melting of the frit particles. The luster effect seems to result from CeO₂ particles of high refractive index, their strong light scattering at visible range due to fine crytalline size 200 nm and their planar arrangement in the surtace region.

Keywords: CeO₂luster glaze, crystallization