JIANG Chao¹, YU Shaohua¹, YU Kaiming¹, WANG Yanxiang², JIANG Wei²

(1. Decoration Materials R&D Center, Ceramic Research Institute of Light Industry of China, Jingdezhen 333000, Jiangxi, China; 2. School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi, China)

Abstract: Iridescent glaze is a kind of crystal glaze with a variety of colors. Mn and Fe were used as nucleation agents, and NH₄VO₃ was used as crystallization promoter. Different temperature, holding time, glaze thickness, MnO₂ content and NH₄VO₃ content were studied as reaction factors. Iridescent glaze was characterized by SEM, XRD and XRF. The experiment results showed that, the excellent iridescent appearance could be obtained with spinel MnFe₂O₄ generated in the glaze and the size of the crystal particles at 1 mm when the holding time was 1040 ℃ the holding time was 105 min, the glaze layer thickness was 0.5 mm, the MnO₂ content was 2% and the NH₄VO₃ content was 1%.
Keywords: iridescent glaze; crystalline glaze; spinel