摘要
使用锌-碳钢异材质丝束电极技术,模拟并研究了锌/钢电偶腐蚀不同阶段的电位和电流密度的空间分布.结果表明,在锌丝与钢丝面积比为10:1的情况下,锌丝能给钢丝提供足够的阴极保护,且锌丝之间存在明显的电位、电流分布不均现象;钢丝之间也存在电化学参数分布不均现象,而且在受到保护的同时钢丝表面有氢析出.
In order to obtain the spatial distribution and its variation with time during the galvanic corrosion of hot dip galvanized steel if scratches occurred in the zinc coating, the heterogeneous wire beam electrode composed of zinc and mild steel wires was developed, and then the potential and current distributions of this electrode were acquired at different time. The results showed that zinc wires can provide enough cathodic protection to steel wires in seawater when surface area of zinc wires is ten times that of steel wires. The potential and current distributions were inhomogeneous among the zinc wires. The similar heterogeneous phenomenon also presented among the steel wires, and the hydrogen evolution occurred on their surfaces.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2009年第4期343-346,共4页
Chinese Journal of Materials Research
基金
国家自然科学基金40576038
山东省博士基金2006BS07008
山东省自然科学基金Y2008E09资助项目~~
关键词
材料失效与保护
丝束电极
电偶腐蚀
阴极保护
镀锌层
氢析出
materials failure and protection, wire beam electrode, carbon steel, cathodic protection zinc coating, hydrogen evolution