宝鸡眉县出土27件窑藏青铜器锈蚀特征及成分的分析研究

Corrosion characteristics and composition analysis of bronzes excavated in a vault in Mei-County, Baoji

为了研究刚出土的青铜器在新的环境中的发展变化情况,在宝鸡眉县27件国宝级西周窖藏青铜器出土一年半后,对这批器物出土前后的锈蚀类型及特征进行了分析和描述,并对每一器物的锈蚀产物进行了系统检测分析。结果显示,这批青铜器腐蚀类型主要为封闭环境中的大气腐蚀,主要产物为碳酸盐和氧化物。但同时在其中一个器物上发现了氯化物类有害锈成分,分析认为,出土前后环境的变化是有害锈得以产生和发展的根本原因。

To Western Zhou study the change of corrosion of excavated bronzes in new conservation environment, 27 pieces of Dynasty bronzes of a vault in Meixian, Baoji after one year and half excavation were taken as sampies. The corrosion types and characteristics were analyzed and described. The results showed that the main type of corrosion of the bronzes was the atmospheric corrosion in closed environment; the corrosive products were mainly carbonates and oxides, but harmful chlorides were also detected on one of the bronzes. The change of the conservation environment before and after excavation was the main factor of corrosion.