基于EDXRF线扫描分析的金元时期钧瓷工艺研究

利用能量色散X射线荧光(EDXRF)探针对一批胎釉间有一白色层的金元时期钧瓷标本进行了化学成分的线扫描分析.结果显示,白色层的化学组成介于胎釉之间,应为烧制过程中形成的反应层.钧瓷紫红色釉的CuO含量显著高于天青色釉,其他组分的含量基本一致,表明紫红色釉的呈色物质为Cu元素,其他原料配方与天青釉相同.此外,反应层中的K2O含量高于瓷釉和瓷胎,此现象应是瓷釉的硅酸盐玻璃本质、胎釉的化学组成,以及K2O在玻璃体中的特性等因素的综合作用结果.

Technical Study of Ancient Jun Porcelain Based on EDXRF Scanning Analysis

The major elements of several Jun porcelain samples which have representative glaze colors and white thin layer of substance between the glaze and the body as well,were analyzed with EDXRF(energy dispersive X-ray fluorescence)probe technology to study the technics of ancient Jun porcelains.The result shows that the chemical composition of the thin substance is just between the glaze and the body.So it is concluded that this thin substance between the glaze and the body is a reaction layer.The CuO content of the red glaze is obviously higher than that of the blue glaze,which means that the reason why the red glaze is red is the existence of Cu.Besides CuO,the content of other elements of the red glaze is similar to that of the blue glaze,which reveals that the raw mineral of red glaze is similar to that of blue glaze.Meanwhile,it is revealed that the K2O content of reaction layer is higher than that of the glaze and the body,and this phenomenon is different from that of other oxides.K2O content of reaction layer is higher than that of the glaze and the body,which is the synthetical result of several factors,including the chemical composition of the glaze and the body,the character of silica glass of glaze,and the specialty of K2O in glass.