LI Lun, QIAN Yudong

(Shandong [nstitute of Ceramic Research and Design)

Abstract: This paper introduces the testing on high-quartz porcelain in high temperature calcination by the X - ray diffraction, declaring the high-quartz porcelain of changing and getting the new phase. The result shows that there is not any phase transformation during the period of heating from room temperature to 500℃. The only chang is the diffraction peak of the phase of Kaolinite (Al₂O₃·2SiO₂·2H₂O）reduce from 500℃ to 600℃. The experiment result shows that the transition temperature of high - quartz porcelain  is about 1100℃ to 1300℃ and with the increase in temperature, the new phase formed is Mullite (Al₂O₃·2SiO₂）and Cristobalite (SiO₂） These results play an important role in studying the manufacturing process of the high - quartz porcelain

Keywords: High - quartz porcelain, Phase change, X - ray diffraction apalysis