YANG Ke, LIU Yang

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

Abstract:Silicon/iron red pigment was prepared with FeCl3·6H2O and silica sol as materials, and ammonia hydroxide as the precipitator. Orthogonal analysis was used to study the effects of different processing parameters on the synthesis of silicon/iron red pigment. Results showed that the Si/Fe ratio is the main factor that affected the preparation of the pigment. XRD analysis of the synthesized sample showed that the coloring agent Fe2O3 was mainly encapsuled with SiO2 glass phase in the silicon/iron red pigment.

Key words: silicon/iron pigment; Si/Fe ratio; precipitation method; SiO2 glass phase