摘要
针对沿海工业区域输变电电塔钢构件出现的腐蚀现象,模拟海洋-工业大气环境,配比了含有6种不同浓度NaCl的腐蚀介质溶液,采用干湿交替循环法处理镀锌钢试样,分析了镀锌钢试样的腐蚀失重行为。研究结果表明,镀锌钢的腐蚀增重随着干湿循环次数的增加而增大;镀锌钢的腐蚀过程可以划分为腐蚀初期、腐蚀中期和腐蚀后期3个阶段,腐蚀初期和腐蚀中期处于腐蚀减速阶段,腐蚀后期处于腐蚀加速阶段;Cl^(-)的存在缩短了镀锌钢转入下一腐蚀阶段的时间,含有Cl^(-)和HSO_(3)^(-)的腐蚀介质溶液的腐蚀能力更强。研究结果对于输变电设备维护具有重要意义。
To address the corrosion phenomenon of steel components of transmission and substation towers in coastal industrial areas,the corrosion media solutions containing six different concentrations of NaCl were formulated to simulate the ocean-industrial atmosphere,and the galvanized steel specimens were treated with wet-dry cycle method,then the corrosion weight loss behavior of galvanized steel specimens was analyzed.The results showed that the corrosion weight gain of galvanized steel increases with the increase of the number of wet-dry cycles.The corrosion process of galvanized steel can be divided into three phases:early corrosion,mid-corrosion and late corrosion,with the early and the mid-corrosion in the corrosion deceleration phase and the late corrosion in the corrosion acceleration phase.The presence of Cl^(-)shortens the time for galvanized steel to move to the next corrosion phase,and the solutions containing Cl^(-)and HSO_(3)^(-) corrosion medium were more corrosive.The results of this study are of great significance for the maintenance of transmission and substation equipment.
作者
柴滨
Chai Bin(GuohuaRuifeng(DongyingHekou)Wind Power Co.Ltd.,Dongying,257000)
出处
《热喷涂技术》
2023年第1期61-65,28,共6页
Thermal Spray Technology
关键词
输变电电塔
镀锌钢
大气腐蚀
海洋工业环境
干湿循环
Transmission towers
Galvanized steel
Atmospheric corrosion
Marine industrial environment
Wet-dry cycle
