Comparative Testing of Corrosive Kinetics of Steel by Voltamperometry and Coulometry Methods

Title:Comparative Testing of Corrosive Kinetics of Steel by Voltamperometry and Coulometry Methods

Volume: 8 Issue: 2

Author(s): A.E. Kuzmak*A.V. Kozheurov

Affiliation:

• AN Frumkin Institute of Physical Chemistry and Electrochemistry, Moscow, 119071,Russian Federation

Keywords: Registration, kinetics, corrosion, methods, coulometry, voltammetry, comparison of results.

Abstract: Background: In this paper, a comparative study of the correctness of the results of registration of corrosion kinetics with the methods of current-voltage curves (V / a) and Coulometric Registration of Corrosion Products (CDCP method) was carried out.

Methods: It is shown that the action of the electric field under polarization changes the character of the corrosion process and, in particular, stimulates the formation of the oxide layer, leading to a distortion of the results of the loss of the mass of the metal.

Results and Conclusion: The convergence of the results of coulometric and "tafel" measurements of mass loss is established only on "pure" metal. After the formation of the oxide layer, the "tafel" results show a protective effect, which does not exist in a real corrosion process.

Cite this article as:

Kuzmak A.E.*, Kozheurov A.V. , Comparative Testing of Corrosive Kinetics of Steel by Voltamperometry and Coulometry Methods, Innovations in Corrosion and Materials Science (Discontinued) 2018; 8 (2) . https://dx.doi.org/10.2174/2352094908666181106114933