Issue |
E3S Web Conf.
Volume 121, 2019
I International Conference “Corrosion in the Oil and Gas Industry”
|
|
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Article Number | 01012 | |
Number of page(s) | 5 | |
Section | Corrosion Monitoring | |
DOI | https://doi.org/10.1051/e3sconf/201912101012 | |
Published online | 14 October 2019 |
Surface vs diffusion in TDS of hydrogen
1
Peter the Great St. Petersburg Polytechnic University (SPbPU), 195251 Polytechnicheskaya, 29, St. Petersburg, Russia
2
Institute for Problems in Mechanical Engineering of Russian Academy of Sciences, 199178 V.O., Bolshoy pr., 61, St. Petersburg, Russia
* Corresponding author: vapol@mail.ru
The paper addresses the numerical simulation of conditions in which the measurement of thermal desorption spectra of hydrogen (TDS) is carried out. Plane steel samples of 10 mm thickness were used as the specimens for simulation. The skin effect which is observed with standard hydrogen charging of samples was accounted for the initial conditions. The standard diffusion of hydrogen was simulated according to Fick’s law. Solution of the Fick’s equation is obtained by finite element methods using the developed code. The resulting solutions show that standard hydrogen charging can lead to the appearance of an additional TDS peak, even without taking into account the traps. New interpretation of the TDS method for hydrogen dissolved in a solid was suggested.
© The Authors, published by EDP Sciences, 2019
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