湖北柳树沟墓群M24出土汉代薄胎铜镜的保护修复

Conservation and restoration of one Han Dynasty thin bronze mirror excavated form M24 of Liushugou cemetery in Hubei province

借助超景深视频显微镜、扫描电镜、拉曼光谱仪等现代检测分析仪器对湖北柳树沟墓群出土的一件汉代薄胎残损铜镜进行了检测分析。分析包括基体的微观腐蚀形貌、合金成分、金相组织及表面锈蚀物的物相和元素组成,从而确定了此面铜镜的腐蚀程度、材质、组织结构及表面锈蚀物类型。在此基础上,采用表面清洁、点焊粘接、补全、随色及缓蚀封护等保护修复措施恢复了铜镜的器型,展现了文物原貌。

In this paper, digital video microscopy, scanning electron microscopy with energy dispersive X - ray, Raman spectroscopy, and X- Ray Fluorescence were used to study the microcorrosion morphology, alloy composition, metallurgical structure and phase and elemental composition of a Han Dynasty thin bronze mirror excavated from the Liushugou Cemetery in Hubei Province. The degree of corrosion, material, metallurgical structure and type of surface corrosion were determined. Based on the results, it is tried to restore the original look of the object by cleaning, spot welding, bonding, completing the missing part, balancing the color and coating with protective materials.