WU Yanchun, WU Juan, WU Junming, WU Lin, YUAN Feng, TANG Minli
(Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi, China)
Abstract: Prince Huai’s Palace in Poyang excavated in 2012 is one of the important palaces for enfeoffment princes in Ming Dynasty,where a batch of green glazed tiles in good shapes and elegant colors were unearthed. They provide valuable data for revealing the production technology of Ming Dynasty building materials. In this study, different types of classical glazed tiles from Prince Huai’s Palace relics were taken as the research objects, EDXRF and SEM were used to analyze the chemical composition and microscopic structure of the body,mask clay and glaze, then the raw material formula and preparation technology of mask clay as well as the main cause of significant peeling difference between the samples were discussed. The results show that most of the glazed tiles have white mask clay of which the chemical composition is obviously different from that of the body with a higher K2O content. In a certain range, with the increase of mask clay thickness, the glaze thickness is reduced and the quality of glaze surface obviously improved. When the thickness of mask clay comes to 445 μm, the body and glaze are combined very well, and the surface of glaze is smooth and shiny with nearly no peeling.
Key words: mask clay; peeling; SEM; EDXRF