摘要
通过对ＦＥ在含Ｃｌ－与不含Ｃｌ－的Ｈ２ＳＯ４介质中的稳态钝化和暂态致钝过程的分析，发现钝化膜的生成是以分形方式进行的，钝化电位的提高在加快成膜速度的同时，也使膜的分形维数上升．Ｃｌ－的加入使分形维数进一步提高，并通过改变膜的组成结构使膜的溶解速度增大．
n investigation on steady and transient passivation processes was carried out for Fe in H2SO4 and H2SO4 + HCl media. Results show that the passive film formed at the initial stage of passivation has a fractal dimension (Ds), and the Ds increases with passivation potential. Addition of Cl- into the H2SO4 solution can further increase the Ds and increase the rates of the formation and the active dissolution of the passive film as the Cl- changes the structure of the film.
出处
《中国腐蚀与防护学报》
CAS
CSCD
1994年第3期175-183,共9页
Journal of Chinese Society For Corrosion and Protection
基金
国家自然科学基金
关键词
钝化过程
钝化膜
铁
硫酸
防腐
氯
Passivation process, passive film, fractal dimension
