Special crystalline glaze of Black Glaze in Song Dynasty

Jian Yao's outstanding achievement in the history of China ceramics lies in his creation of several special crystalline glaze. These changes in decorating crystalline glaze are the most peculiar and unique, and they have won the recognition and love of many literati. Judging from the existing physical data, the black glazed porcelain products fired in Jian Yao are changing with black glaze, and the magical brilliance of its various natural kilns transformed into crystalline glaze is amazing. Glaze decorative varieties have been crowned with various reputations, such as golden rabbit honey, yellow rabbit honey, silver rabbit honey, gray rabbit honey, partridge spot, oil drop glaze, waste glaze and so on, and these varieties are also the most precious. The chemical composition of the glaze of kiln transformer products is basically the same as the raw materials used, but the formula of iron and trace oxides in the glaze is different. These black glaze varieties with different formulas have different glaze grain mechanism and glaze effect because of different firing temperature and atmosphere. Among the fried seeds, the temperature and atmosphere of fire play a complex and subtle role. ~ the glaze is even from the edge of the mouth to the abdomen of the vessel, and less beads are dropped. In the light brown glaze layer, purple and red spots are densely covered.