唐四云凤龟钮铜镜腐蚀现象的分析研究

本文以江西樟树出土唐四云凤龟钮铜镜为研究对象,应用扫描电镜对铜镜进行微区形貌观察、元素成分分析和断面线扫描元素分布成分分析,发现铜镜表面漆古层含锡、氧量较高,含铜量较低,镜面和镜背元素成分相差不大,镜面和镜背漆古层中均检测出汞元素。根据分析检测数据,我们认为此铜镜在制作过程中对镜表面处理采用了锡汞齐技术。

In order to find out the surface - treat technique, the SEM - EDX method is used to make microscopic examination and element contribution measurement on the tortoise - knob mirror with the design of four cloud phoenixes collected by Zhangshu Municipal Museum, Jiangxi Province. The results show that the contents of Tin and O are high, the content of Cu is low in Qigu layer on the surface of the mirror, which is almost the same with the back of the mirror. However, the mercury was detected in the Qign layer of both sides. According to the data, we consider that the surfaces of the bronze mirror are plated with Tin - Hg alloy.