LI Zhonghe,CAO Lianchu, ZHANG  Zhicheng,DAI  Cuixin ,ZENG Xiangtong

(Shanghai University of Science and Technology)

(Jingdezhen CeramicInstitute)

Abstract:By X-ray diffraction analysis,transmission electron microscopy and scanning electron microscpy,the paper gives the description of the mineral phase change in porcelain body composed of Xinzi Kaolin and Nangang china stone under the temperatures from 700 to 1320c in an electric kiln. The result shows that under the heating temperatures from 700 to 1000℃ kaolinite in porcelain body will produce mullite crystalltes Under the heating temperatures about 1000c sericite in porcelain body begins to form mullite and y-Al20: but not leucite,and at the same time it is discovered that even under temperature of 1300℃ sericites still remains pseudomorph of sericite in the original shape, which shows that sericite does not melt but its chains have been broken and partly decomosed to mullite.

Keywords:X-ray;Porcelain Body Composed;Xinzi Kaolin;Nangang