中文摘要：

利用丝束电极技术研究NaCl液滴下304不锈钢表面电化学参数分布及其随腐蚀时间的变化规律。结果表明,液滴下不锈钢丝束电极表面的腐蚀电位分布和电偶电流分布均呈现空间、时间上的不均匀性;丝束电极表面随机形成局部阴极区和阳极区,而且随着腐蚀时间的延长,局部区域的极性发生反转。液滴下电极表面的腐蚀程度和不均匀程度均随腐蚀时间的延长先增加后减小,在腐蚀12h时达到最大。

英文摘要：

The wire beam electrode（WBE） was used to study the distributions of the electrochemical parameters of 304 stainless steel under a droplet of NaCl as well as their variations with the corrosion time. It was found that the distributions of the corrosion potential and the galvanic current were inhomogeneous with local anodic and cathodic zones appeared randomly.Moreover,the polarity of local zones changed with the evolution of corrosion process.The corrosion degree and inhomogeneity increased firstly,then decreased afterward with the increase of time.Stainless steel exhibited the highest anodic current density after exposure for 12 hours.