A study on the impedance responses of inhibitor desorption

Wang Jia

doi:10.1007/BF02848217

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A study on the impedance responses of inhibitor desorption

Updated：2023-05-16

- A study on the impedance responses of inhibitor desorption
- Journal of Oceanology and Limnology Vol. 16, Issue 1, Pages: 54-59(1998)
- Affiliations：
  
  Institute of Oceanology
- Author bio：
- Funds：
- DOI：10.1007/BF02848217
  CLC：
- Published：1998
- Accepted：
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Jia, W. A study on the impedance responses of inhibitor desorption., Chin. J. Ocean. Limnol. 16, 54–59 (1998). https://doi.org/10.1007/BF02848217
DOI：

Jia, W. A study on the impedance responses of inhibitor desorption., Chin. J. Ocean. Limnol. 16, 54–59 (1998). https://doi.org/10.1007/BF02848217 DOI：

摘要

Abstract

This study of impedance responses of inhibitor desorption during an anodic process of iron in acidic medium showed that the unstable inhibitor layer causes an inductive loop on impedance plots as the potential approaches the desorption potential. With increasing applied potential

the double layer capacitances increased rapidly to a larger value with a sharp turning point at the desorption potentialE des

and the transfer resistances gradually decreased to relatively low values in the vicinity ofE des. The dispersion effect

at the same time

continuously increased independently of the desorption potentials. The above results are discussed for the case of an adsorbed inhibitor layer desorbing from an anodically polarized metal surface.

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references

Amstrong, R. D., Firman, R. E., Thirsk, H. R., 1974. The AC impedance of complex electrochemical reactions.Faraday Disc. of the Chemical Soc. 56: 244–265.

Drazic, V. J., Drazic, D. M., 1990. Influence of the metal dissolution rate on the anion and inhibitor adsorption. Proc. 7th European Symposium on Corrosion Inhibitors, Ann. Univ. Ferrara, N. S. Sez. V. Suppl. FerraraN.9, pp. 99–105.

Lorenz, W. J., Mansfeld, F., 1981. Determination of corrosion rate by electrochemical DC and AC methods.Corros. Sci. 21(9): 647–672.

Wang Jia, 1995a. Electrochemical studies on the phenomenon of inhibitor desorption. Proceedings of the 8th European Symposium on Corrosion Inhibitors Ann. Univ. Ferrara, N. S., Sez. V, Suppl.N.10, pp. 245–249.

Wang Jia, 1995b. Effects of inhibitor desorption on electrochemical parameters. Proceedings of the 8th European Symposium on Corrosion Inhibitors Ann. Univ. Ferrara, N. S., Sez. V, Suppl.N.10, pp. 251–255.

Wang Jia, Cao Chunan, Liang Feng, 1991. On the inhibition action of some inhibitors. Proc. 7th Asian Pacific Corrosion Control Conference. Chinese Society of Corrosion and Protection, Beijing, pp. 991–994.

Wang Jia, Shi Chunyu, Song Shizhe et al., 1989. Curre-fitting for the impedance data with dispersing capacitive loops,J. Chinese Society of Corrosion and Protection 9: 11–17.

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