Comparative study on the color characteristics of sky-green porcelain in the four kilns of a Ru kiln system from the Northern Song Dynasty

IF 2.9 Q1 MATERIALS SCIENCE, CERAMICS

Open Ceramics Pub Date : 2025-07-03 DOI:10.1016/j.oceram.2025.100821

Zhen Sang , Shuofei Zan , Le Li , Xiangyang Fu , Zhen Liu , Danni Chen , Xiaojuan Yuan , Pei Shi

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Abstract

To comparatively study the coloring mechanism of the celadon glaze of the four kilns in the Ru kiln system (i.e., Qingliangsi, Donggou, Yanhedian, and Duandian), samples obtained from these four kilns were examined. The glazes were analyzed by using chromaticity, XRF, XRD, XPS, and SEM/EDS. The results showed that the Fe₂O₃ content of the Yanhedian, Donggou, Duandian, and Qingliangsi specimens decreased successively, so their brightness successively increased. The presence of small and dense bubbles, more mullite crystals, and Mie scattering produced by the phase-separated structure also increased the brightness of the Qingliangsi glaze, giving it the milkiest texture. The Fe²⁺/Fe³⁺ ratio and P₂O₅ content of the Qingliangsi, Duandian, Donggou, and Yanhedian specimen glazes successively decreased. Therefore, their glaze color changed from greenish-blue to greenish-yellow, and the reducing atmosphere decreased successively. The higher CaO content of the Qingliangsi and Duandian glazes deepened their blue hue.

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北宋汝窑系统四窑天青瓷色彩特征比较研究

为了比较研究汝窑系统中4个窑（即青良寺、东沟、延河店和端店）青瓷釉的着色机理，对这4个窑的样品进行了检测。采用色度、XRF、XRD、XPS、SEM/EDS等方法对釉料进行分析。结果表明：延河店、东沟、端店、青梁寺试样的Fe2O3含量依次降低，亮度依次增大；小而致密的气泡，更多的莫来石晶体，以及相分离结构产生的米氏散射也增加了青良寺釉的亮度，使其具有最乳白色的质地。青梁寺、端店、东沟、延河店样品釉的Fe2+/Fe3+比值和P2O5含量依次降低。因此，它们的釉色由青蓝色变为青黄色，还原气氛逐渐减弱。高CaO含量的青凉寺和端店釉加深了其蓝色色调。

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