Micro-structural study of colored porcelains of Changsha kiln using imaging and spectroscopic techniques
Micro-structural study of colored porcelains of Changsha kiln using imaging and spectroscopic techniques
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DOI：
10.1016/j.ceramint.2018.07.074
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发表时间：
2018-10
影响因子：
5.2
通讯作者：
Bailin Shen;P. Sciau;Tian-xu Wang;M. Brunet;Jianmao Li;Wen Lu;T. Zhu
中科院分区：
文献类型：
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作者：
Bailin Shen;P. Sciau;Tian-xu Wang;M. Brunet;Jianmao Li;Wen Lu;T. Zhu
长沙窑是唐代（618-907 CE）至五代（907-960 CE）的古老工厂，以生产彩色瓷器而闻名。它是掌握高温多色技术的先驱之一。本文采用能量色散X射线荧光光谱（EDXRF）、拉曼光谱和扫描电镜能谱仪（SEM-EDS）对两种具有代表性的色釉的组成和结构进行了研究。结果表明，棕色和绿色色釉的显色元素分别为铁和铜。结果还表明，在釉面附近有大量的枝晶状赤铁矿（α-Fe 2 O3）相，而在坯釉界面处有大量的ε-Fe 2 O3相。这是第二种发现了非常罕见的亚稳氧化铁多晶型的中国古代釉，在绿色釉中没有发现铜基颗粒。绿色的颜色肯定是由于Cu 2+分散在玻璃态基体中。我们的研究证实，锡石（SnO 2）作为乳浊剂化合物，以获得不透明的绿色颜色。
Changsha kiln was an ancient factory from the Tang Dynasty (618–907 CE) to the Five Dynasties (907–960 CE), famous for its colored porcelain production. It was one of the pioneer sites to master the poly-color technique at high temperature. In this work, by using Energy Dispersive X-Ray Fluorescence (EDXRF), Raman spectroscopy and Scanning Electron Microscopy Energy Dispersive X-ray Spectrometer (SEM-EDS), the composition and structure of two of its emblematic colored glazes were studied. The results confirmed that the chromogenic elements of brown and green colored glazes are well iron and copper respectively. They also revealed a significant presence of hematite (α-Fe2O3) phase with dendritic shape close to the glaze surface and oddly a substantial amount of ε-Fe2O3phase at the body/glaze interface. It is the second type of ancient Chinese glaze in which the very rare and metastable iron(III) oxide polymorph was found. No Cu-based particle was identified in green glaze. The green color is certainly due to Cu2+dispersed in the glassy matrix. Our study confirmed that Cassiterite (SnO2) was used as opacifier compound to obtain opaque green color.