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

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

Journal Name: Innovations in Corrosion and Materials Science

Volume 8 , Issue 2 , 2018

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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.

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

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Article Details

VOLUME: 8
ISSUE: 2
Year: 2018
Page: [113 - 117]
Pages: 5
DOI: 10.2174/2352094908666181106114933
Price: $58

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