EFFECTS OF Cl~- ON PASSIVATION PROCESS OF Fe IN ACIDIC MEDIA

J Chin Soc Corr Pro

1994, Vol. 14

Issue (3): 175-183 DOI:

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EFFECTS OF Cl~- ON PASSIVATION PROCESS OF Fe IN ACIDIC MEDIA

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Abstract 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.

Key words: Passivation process passive film fractal dimension

Received: 25 June 1994

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Song Guangling; Cao Chunan(Corrosion Science Laboratory; Institute of Corrosion and Protection of Metals;Chinese Academy of Sciences)Gao Weihong; Li Ying;Chen Shenghao (Chemistry Department; Shandong University). EFFECTS OF Cl~- ON PASSIVATION PROCESS OF Fe IN ACIDIC MEDIA. J Chin Soc Corr Pro, 1994, 14(3): 175-183.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1994/V14/I3/175

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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