标题：Integrated analysis of a black-glazed porcelain bowl in Tushan Kiln dated back to Song Dynasty, China
作者：Ma, Qinglin ;Xu, Shuqiang ;Wang, Julin ;Yan, Jingyan
作者机构：[Ma, Qinglin ] Institute of Cultural Heritage, Shandong University, NO.27 Shanda Nanlu, Jinan; Shandong Province, China;[Wang, Julin ;Yan, Jingyan ] L 更多
通讯作者地址：[Wang, J] Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical TechnologyChina;
来源：Materials Chemistry and Physics
关键词：Amorphous structures; Ceramic; Glass; Raman spectroscopy; SEM
摘要：Research on corrosion of archaeological porcelain glaze has rarely been carried out in the past, although corrosion damage precious heritage items continuously. A group of black-glazed porcelains from the Song Dynasty was excavated at a poor conservation site in Chongqing, and one of their fragments was investigated with optical microscope, SEM-EDX, FTIR and Raman spectroscopy. The results showed that the alteration crust of the glaze mainly consisted of silica-rich gel and contained a variety of heterogeneous phases, including the liquid phase separation structure and different crystals. The crystals mainly include hematite, magnetite, rutile, pseudobrookite and silicon dioxide. The inter-diffusion reaction between alkalis in glaze and hydrogenated species in contact solution was the main reaction, which led to the formation of silicon-rich hydrate layers. The amorphous layers eventually transformed into acicular silica crystals under long exposure to environment. © 2019 Elsevier B.V.