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Colouring mechanism and firing process of celadon from the Xiangzhou kiln in Anyang,China, from the 5th-7th century
Affiliation:1. School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China;2. Zhengzhou Dahe Village Archaeological Site Park, Zhengzhou 450045, China;3. Henan Provincial Institute of Cultural Relics and Archaeology, Zhengzhou 450004, China;4. Institute of High Energy Physics Chinese Academy of Sciences, Beijing 100039, China;1. Inner Mongolia Key Laboratory of Thin Film and Coatings, School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;2. School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot, China;1. Laboratory of Membrane Processes (LABSEM), Graduate Program of Food Engineering, Department of Chemical and Food Engineering, Federal University of Santa Catarina (UFSC), Trindade, Florianópolis, Santa Catarina 88040-900, Brazil;2. Laboratory of Biological Engineering (LiEB), Graduate Program of Chemical Engineering, Department of Chemical and Food Engineering, Federal University of Santa Catarina (UFSC), Trindade, Florianópolis, Santa Catarina 88040-900, Brazil;1. Xi''an University of Technology, Xi’an 710048, PR China;2. Shaanxi Province Key Laboratory of Corrosion and Protection, Xi''an University of Technology, Xi’an 710048, PR China;1. College of Materials Science and Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China;2. State Key Laboratory of Green Building in Western China, Xi’an University of Architecture and Technology, Xi’an 710055, China;3. School of Resources Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China;4. College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
Abstract:The Xiangzhou kiln was the largest celadon kiln site in northern China from the Northern and Southern Dynasties to the Sui Dynasty (5th-7th centuries). In order to investigate the colouring mechanisms and firing process of two types of celadon (yellow-green and earthen-yellow glazes) from the Xiangzhou kiln, samples were tested and analysed using OM, ED-XRF, TD, SEM-EDS, LRS, XPS and UV-Vis-NIR. The study results show that most of the samples in the two enamels have different formulations. The celadon glaze of the Xiangzhou kiln contains a small amount of quartz, anorthite and other crystals. The yellow-green glaze is fired in a reducing atmosphere and the earthy yellow glaze is fired in an oxidising atmosphere. The colouring mechanism of the Xiangzhou kiln celadon is mainly dominated by the chemical colouring of ionic colouring and aided by structural colouring caused by the microstructure (bubbles, various crystals, fractal structures, etc.).
Keywords:Xiangzhou kiln  Celadon  Firing process  Colouring mechanism
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