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．
An 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.
参考文献
| [1] | 曹楚南．腐蚀电化学原理,化学工业出版社,1985,p2982魏宝明．金属腐蚀理论及应用,化学工业出版社,1984,p1183魏宝明．金属腐蚀理论及应用,化学工业出版社,1984,p1334曹楚南,王佳,林海潮．中国腐蚀与防护学报,1989,9:2615BloomMC．Corr．Sci,1965,5:6246GeanaD,MilligyElAA,LorenzWJ．Corr．Sci,1973,13:505 |
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