DONG  Weixia, BAO  Qifu

(School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001)

Abstract:In this work, special-effect pigments with gold luster for the decoration of ceramic tiles was developed and then their color and luster on ceramic tiles were observed by having them added to four ceramic coatings and then fired in a wide range of temperatures. Their technological behavior was assessed by determining their phase composition (XRD) and their colorimetric parameters. Results indicate that the samples with the addition of 15wt% mica titania pigments, are increasingly better with gold luster in ceramic glaze with the firing temperature going up to 900 C, and deterioration of their optical properties is due to anatase-to-rutile and muscovite-to-feldspar transformations occurring at a higher temperature or after a longer firing cycle. XRD patterns show these pigments can replace expensive precious metals lustres.

Keywords:gold pigment, ceramic applications, technological properties