采用微生物学、表面分析技术和电化学方法研究了从高放废物处置预选区土壤中分离的放线菌菌群对紫铜的腐蚀行为。结果表明:添加高浓度培养基可以维持菌群一定周期内的持续活性;SEM及EDS结果表明,浸泡9 d时放线菌菌群在紫铜表面形成完整的生物膜,腐蚀产物主要为Cu的氢氧化物;实验前期活性生物膜抑制紫铜腐蚀,后期菌群的活动改变了紫铜表面双电层的结构及性质,加速腐蚀进程。 Microbiology, surface analysis and electrochemical methods were used to study the corrosion behavior of actinomycetes isolated from soil pretreated with HLW to copper. The results showed that the addition of high concentration of medium could maintain the sustained activity of the flora over a certain period of time. The results of SEM and EDS showed that the actinomycetes formed a complete biofilm on the surface of the copper after immersing for 9 days, and the corrosion products were mainly Cu Oxide; Pre-experimental active biofilm inhibits copper corrosion, the activity of the latter changes the structure and properties of copper double-layer surface, accelerate the process of corrosion.