Influence of hydrogen bubbles adhering to the exposed surface on the corrosion rate of magnesium alloys AZ31 and AZ61 in sodium chloride solution
| Autor: | Federico R. García-Galván, L. Diaz, Irene Llorente, J. Simancas, Sebastián Feliu |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Magnesium 020209 energy Mechanical Engineering Sodium Metallurgy Metals and Alloys chemistry.chemical_element 02 engineering and technology General Medicine 021001 nanoscience & nanotechnology Surfaces Coatings and Films Corrosion chemistry X-ray photoelectron spectroscopy Mechanics of Materials 0202 electrical engineering electronic engineering information engineering Materials Chemistry Environmental Chemistry Gravimetric analysis Hydrogen evolution Hydrogen bubble 0210 nano-technology Layer (electronics) |
| Zdroj: | Materials and Corrosion. 68:651-663 |
| ISSN: | 0947-5117 |
| Popis: | The influence of the presence of hydrogen bubbles adhered to the corroding specimen surface on the EIS estimations of corrosion rate of magnesium alloys is considered. The EIS corrosion rates for AZ31 specimens exposing a small area were four times higher than the real values determined by gravimetric or hydrogen evolution measurements. In contrast, no significant differences in the corrosion rate have been observed in the case of the AZ61 specimens. A progressive deterioration in the protective properties of the corrosion products layer formed during the test was observed only on AZ31 specimens exposing a small area. |
| Databáze: | OpenAIRE |
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