一件东汉时期铜鼓的分析与保护研究

本文对一件东汉时期铜鼓的保存状况和病害进行了初步调查,并采用金相显微镜、X-射线荧光光谱分析仪(XRF)、X-射线衍射仪(XRD)等仪器分析了铜鼓本体材质及其腐蚀产物。结果表明,该铜鼓本体材质为典型的铜锡铅三元合金,推测为泥范法铸造:铜鼓锈蚀产物主要是孔雀石,此外夹杂有针铁矿和石英。根据检测结果,结合局部实验效果,对铜鼓采取了表面清理、脱盐清洗、缓蚀、封护等针对性的保护处理措施。历经三年多沿海地区馆藏环境的考验,铜鼓保存状况稳定。

Analysis and conservation of a bronze Drum from the Eastern Han Dynasty

A bronze drum from the Eastern Han Dynasty has been analyzed and treated in 2009. After investigating the status and diseases, the base material and corrosion products of the drum were detected by Metallurgical Microscopy, X-ray Fluorescence Probe and X-ray Diffractometer. The results indi- cate that the bronze drum was a Cu-Pb-Sn ternary alloy, using clay-mould casting technique, and the main corrosion product is malachite, mixed with the goethite and quartz. Based on the results and partial experiments, the drum was treated by a series specific method, such as surface cleaning, desalting clean- ing, corrosion inhibition and surface coating. Being in a coastal museum for more than three years, the drum is still in good condition.