Abstract
An electrolyte for electrochemical hydrogen charging of corrosion-susceptible alloys is developed, which preserves the surface integrity at nano-scale by minimizing the surface roughness alternation. To assure the formation and adsorption of the hydrogen from the electrolyte, permeation tests were performed on Fe 3 wt%Si ferritic steel. X-ray photoelectron spectroscopy method was used to check the effect of the glycerol-based solution on the chemical composition of the sample surface. The surface analysis revealed minimal chemical and topography alteration on the surface after different electrochemical treatments. Various types of in situ small-scale mechanical tests such as nano-indentation, micro-pillar compression, and micro-cantilever bending tests were performed inside this electrolyte while the samples being charged with hydrogen under cathodic potential. These small-scale mechanical tests showed that the solution facilitates studying hydrogen embrittlement in nano- or micro-scale.
Original language | English |
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Pages (from-to) | 12516-12529 |
Number of pages | 14 |
Journal | International Journal of Hydrogen Energy |
Volume | 43 |
Issue number | 27 |
DOIs | |
Publication status | Published - 5 Jul 2018 |
Externally published | Yes |
Keywords
- Electrochemistry
- Hydrogen diffusion
- Hydrogen-assisted cracking
- Micromechanical
- Nano-indentation