云阳丝栗包遗址出土汉代青铜耳杯锈蚀的扫描电镜分析  

SEM analysis of corrosion products on the bronze earcup of Han dynasty unearthed at Silibao site,Yunyang county

作　　者：凡小盼[1] 赵雄伟[1] 赵卓[1] 温小华 FAN Xiao- pan ZHAO Xiong-wei ZHAO Zhuo WEN Xiao- hua(Chongqing China Three Gorges Museum,Chongqing 400015 Museum of Yunyang County,Yunyang Chongqing 404500, China)

机构地区：[1]重庆中国三峡博物馆,重庆400015 [2]云阳县博物馆,重庆云阳404500

出　　处：《电子显微学报》2017年第3期258-263,共6页Journal of Chinese Electron Microscopy Society

基　　金：重庆市基础与前沿研究计划项目(No.cstc2014jcyj A00021)

摘　　要：利用扫描电子显微镜、激光共聚焦拉曼光谱仪和三维视频显微镜对云阳丝栗包遗址出土两件汉代青铜耳杯的锈蚀进行观察和分析,结果表明:青铜耳杯锈蚀层主要含铅、铜、磷和氯等元素且锈蚀层存在铅、磷富集现象;铅、磷和氯以磷氯铅矿的形式存在;磷氯铅矿的形成过程应为氯元素和磷元素从外部环境向青铜基体扩散,在微生物的作用下,与基体内的铅反应生成磷氯铅矿(Pb_5(PO_4)_3Cl)。To study the structure of corrosion products and their composition, two bronze earcups of Han dynasty unearthed at Silibao site,Yunyang county,Chongqing have been analyzed by SEM-EDS,Raman spectroscopy and optical microscope. The results are as follows. The main elements detected in the corrosion layers are lead, copper, phosphate, chlorine and so on. The enrichment of lead and phosphate can be observed in the corrosion layers. Lead, phosphorus and chlorine develop in the form of pyromorphite. Pb scattered in the bronze matrix were selectively corroded by chlorine anions, phosphate and fungus from buried environment to be pyromorphite（ Pb5（PO4）3Cl）.

关 键 词：青铜 磷氯铅矿 铅 

分 类 号：K876.41[历史地理—考古学及博物馆学] TG115[历史地理—历史学]