后母戊鼎西南足腐蚀产物物相分析

Phase Analysis of Corrosion Products on the Southwest Leg of “Hou Mu Wu” Ding

为检测后母戊鼎的腐蚀状况,利用X射线衍射(XRD)和激光显微拉曼光谱(LR)分析方法,选取该鼎西南足(以有铭文面为北)的腐蚀产物进行物相分析。结果表明:该鼎足腐蚀产物的主要物相组成为氯铜矿、副氯铜矿和赤铜矿等。氯铜矿和副氯铜矿作为青铜有害锈的主要构成物,在条件适宜的情况下呈现发展和扩散迅速的特性。建议对该鼎及时进行保护处理,或干燥密闭存放。本次分析结果可为保护工作的实施提供依据。

Using X-ray diffraction （XRD） and laser microprobe Raman spectrochemical （LR） analysis, corrosion products on the southwest leg （with inscribed side as the north） of the ＂Hou Mu Wu＂ cling are analyzed. Results indicate that the corrosion products consist of atacamite, paratacarnite, cuprite, etc. Atacamite and paratacamite, as principal components in harmful corrosion on bronzes, will spread quickly under suitable conditions. Therefore, it is suggested that conservation measures must be taken on this ding or it should be displayed in a dry and enclosed environment. The analysis results will provide the basis for its protection.