E3S Web of Conf.
Volume 225, 2021II International Conference “Corrosion in the Oil & Gas Industry” 2020
|Number of page(s)||3|
|Section||Corrosion Mechanisms and Testing Methods|
|Published online||05 January 2021|
Method of investigation of local corrosion processes on samples from clad steel
Ufa State Petroleum Technological University, the Chair «Technology of Petroleum Devices», Ufa, Russia
* Corresponding author: firstname.lastname@example.org
The article describes a method developed to evaluate the mechanism of local corrosion processes on the surface of a clad layer of steel specimens, which makes it possible to identify the difference in electrode potentials in artificially created holes. As a result of the study it was found that in a corrosive medium containing Cl- and S2O32- ions, the diffusion of oxidants into a hole of smaller diameter is difficult, which causes a large potential difference between the wall of the hole and its bottom. This process contributes to the development of local electrochemical corrosion.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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