The Effect of Fe2O3 Content on the Yellow Hare's Fur Glaze Strips and Structures in Jian Kiln
The experiment used local raw materials such as red clay,Jianou stone and plant ash from Jianyang to investigate the effect of different Fe2O3 contents on the yellow hare's fur glaze strips and structures inJian Kiln,analyzing the variation mechanism of the fur strips.The results show that the Fe2O3 content affects the quantity,morphology and size of ε-Fe2O3 crystals precipitated in the glaze,resulting in different forms of fur stripes.With an Fe2O3 content of 0.11 mol,the glaze primarily consists of a glass phase with fewer precipitated crystals,and an irregular block-like shape with a size of approximately 50～100 nm,resulting in a gray-blue glaze surface without fur stripes patterns.As the Fe2O3 content increases to 0.13～0.15 mol,more ε-Fe2O3 crystals precipitate in a short columnar form with sizes around 50～150 nm,forming fine blue-white fur stripes on the glaze surface.When the Fe2O3 content reaches 0.17～0.19 mol,ε-Fe2O3 crystals develop into monolayer and multilayered dendritic structures with sizes around 250～450 nm,resulting in longer,filamentous yellow hare's fur patterns on the glaze surface.When Fe2O3 content is 0.21～0.23 mol,ε-Fe2O3 crystals develop into leaf-like large crystal flowers,about 1～2 μm in size,resulting in a persimmon-red glaze surface.When the Fe2O3 content in the glaze ranges from 0.15～0.21 mol,an optimal quantity of yellow fur stripes with slender morphology and good filamentous characteristics is observed on the glaze surface.
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