钧瓷铜红釉呈色机制的初步研究  

A preliminary study on coloring mechanism of Jun copper red glaze

作　　者：田士兵[1] 刘渝珍[1] 张茂林[2] 汪丽华[2] 谢亚宁[3] 王昌燧[2] 

机构地区：[1]中国科学院研究生院物理科学学院,北京100049 [2]中国科学院研究生院科技史与科技考古系,北京100039 [3]中国科学院高能物理研究所同步辐射实验室,北京100049

出　　处：《核技术》2009年第6期413-418,共6页Nuclear Techniques

基　　金：国家自然科学基金(10875169);中国科学院知识创新方向性项目(KJCX3.SYW.N12)资助

摘　　要：利用同步辐射光源,对一枚带红釉的元代钧瓷表面进行了无损的X射线吸收精细结构分析(SR-XAFS)。将釉中铜的相关标准谱作线性拟合,并与样品的近边图谱作比较分析,结果表明,红釉层内,铜的存在状况为:37%的单价铜和63%的零价铜,零价铜主要以金属团簇或多聚体形式存在其中。而在红釉表面,则主要为单价铜。对延展边的处理结果表明,单价铜孤立地镶嵌在玻璃体网格结构中。铜的这些特殊存在形式导致了钧釉独特的光学性质。另外,采用同步辐射X射线荧光光谱(SRXFS)分析技术,无损测定了釉中元素的分布特征,最后,尝试对这些复杂结构的形成机理进行了探讨。The origin of a red color glazes decorated on the ancient Jun porcelain has been attributed to the presence of combined copper clusters and cuprous oxide, or cuprous oxide alone. For better understanding of the color-forming mechanism, X-ray absorption at the Cu-edge by the red area of a Jun porcelain shard was carded out. By comparing the XANFS spectra of the sample with metal copper and cubic Cu2O, we found that the spectra of the red layer of sample were similar to the spectrum combination of 37% Cu2O and 63% metal copper, while the spectra from surface of the red spot mainly resembled that of cubic Cu2O. The EXAFS results showed that monovalence copper cations were isolated in the glaze matrix, and copper atoms were formed to metallic copper clusters or mutimers dominantly distributed in the inner layer. These can be responsible to the optical properties of the red decoration with the presence of colloidal composition containing copper particles and the Cu^＋ ions. In conclusion, a preliminary non-destructive elemental analysis using synchrotron radiation-induce X-ray fluorescence （SR-XRF） is demonstrated, and mechanism about the formation of the complicated structures is discussed.

关 键 词：钧瓷 铜红釉 X射线吸收精细结构分析 同步辐射X射线荧光光谱 成色机理 

分 类 号：O657.34[理学—分析化学] K876.3[理学—化学]