WANG Yuanxu 1, KANG Baoqiang 2, LI He 2, WU Junming 1, LIU Yiqun 3, CHEN Wei 4
(1. Jingdezhen Ceramic University, Jingdezhen 333403, Jiangxi, China; 2. Palace Museum, Beijing 100009, China; 3. Peking University, Beijing 100871; 4. Hebei Provincial Institute of Cultural Relics and Archeology, Shijiazhuang 050011, Hebei, China)
Abstract: X-ray microscopy (micro-CT) is a non-destructive high-resolution imaging technique. By using micro-CT scanning and 3D reconstruction technology, 3D visualization and quantitative analysis of the internal bubbles and pores of Jun glaze porcelain in Jin and Yuan dynasties were carried out, resulting in 3D visual distribution images and quantitative data. It is found that size of the bubbles in the glaze layer of Jun glaze in the Jin Yuan period is very different. The bubbles larger than 100 μm are dispersed and mainly distributed in the middle layer of the glaze layer, while the bubbles smaller than 100 μm are distributed in the surface layer. Combined with petrographic and chemical composition analysis, the formation of the feature is related to the high temperature viscosity and firing temperature of the glaze. Micro-CT scanning for 3D reconstruction is a new non-destructive method to analyze the characteristics and processes of the bubbles and pores of ancient ceramics. This study verifies the feasibility and effectiveness of micro-CT in the study of the microstructure of ancient ceramics, providing important information and basis for scientific analysis, identification, protection and restoration of ancient ceramics.
Key words: micro-CT; three-dimensional visualization; non-destructive testing; Jun glazed porcelain; bubbles; pores