摘要
采用室内加速腐蚀实验和电化学测试方法,结合腐蚀产物SEM和XRD分析,研究了纯铜接地材料在碱性土壤中的腐蚀行为。结果表明,在碱性土壤中纯铜具有明显的钝化特征,表面形成了一层由CuO、Cu2O和CuSO4·H2O组成的均匀致密的腐蚀产物,腐蚀产物将腐蚀性离子与基体金属隔离,抑制氧的扩散,对基体金属起到良好的保护作用。
The corrosion behavior of pure Cu in alkaline soil was studied by accelerated corrosion test and electrochemical test in laboratory, as well as characterization of corrosion products by SEM and XRD. The results showed that a passivation range exists on the potentiodynamic polarization curve for pure Cu in alkaline soil. Homogenous and compact corrosion products are observed on the surface of pure Cu, which consist of CuO, Cu2O and CuSO4·H2O. The corrosion products can isolate the corrosive ions from the substrate metal, therewith inhibit the inward diffusion of oxygen and protect the substrate metal.
作者
闫风洁
李辛庚
姜波
樊志彬
田素兰
Fengjie YAN;Xingeng LI;Bo JIANG;Zhibin FAN;Sulan TIAN(State Grid Corporation Joint Laboratory of Advanced Electrical Engineering Materials Shandong, State Grid Shandong Electric Power Research Institute, Ji'nan 250001, China;State Grid Jintang County Electric Power Supply Company, Chengdu 610400, China)
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2019年第2期155-158,共4页
Corrosion Science and Protection Technology
基金
国家电网有限公司科技项目(5206001601XQ和5206001601XL)~~
关键词
铜
土壤腐蚀
电化学
加速腐蚀
copper
soil corrosion
electrochemical
accelerated corrosion
