Effect of Temperature on the Corrosion Behavior of Biodegradable AZ31B Magnesium Alloy in Ringer’s Physiological Solution
| Autor: | Sebastián Feliu, Federico R. García-Galván, Lucien Veleva |
|---|---|
| Přispěvatelé: | Ministerio de Economía y Competitividad (España) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
lcsh:TN1-997
Materials science Hydrogen corrosion layers chloride Scanning electron microscope 020209 energy chemistry.chemical_element 02 engineering and technology Chloride Corrosion Biomaterials magnesium alloys Aluminium 0202 electrical engineering electronic engineering information engineering medicine General Materials Science Magnesium alloy Hydrogen evolution lcsh:Mining engineering. Metallurgy Corrosion layers Metals and Alloys 021001 nanoscience & nanotechnology Dielectric spectroscopy hydrogen evolution chemistry Chemical engineering Magnesium alloys aluminum Ringer's solution Ringer’s solution 0210 nano-technology medicine.drug Aluminum biomaterials |
| Zdroj: | Metals Volume 9 Issue 5 Digital.CSIC. Repositorio Institucional del CSIC instname Metals, Vol 9, Iss 5, p 591 (2019) |
| ISSN: | 2075-4701 |
| DOI: | 10.3390/met9050591 |
| Popis: | In this work, the corrosion behaviors of the AZ31B alloy in Ringer&rsquo s solution at 20 ° C and 37 ° C were compared over four days to better understand the influence of temperature and immersion time on corrosion rate. The corrosion products on the surfaces of the AZ31B alloys were examined by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). Electrochemical impedance spectroscopy (EIS) provided information about the protective properties of the corrosion layers. A significant acceleration in corrosion rate with increasing temperature was measured using mass loss and evolved hydrogen methods. This temperature effect was directly related to the changes in chemical composition and thickness of the Al-rich corrosion layer formed on the surface of the AZ31B alloy. At 20 ° C, the presence of a thick (micrometer scale) Al-rich corrosion layer on the surface reduced the corrosion rate in Ringer&rsquo s solution over time. At 37 ° C, the incorporation of additional Mg and Al compounds containing Cl into the Al-rich corrosion layer was observed in the early stages of exposure to Ringer&rsquo s solution. At 37 ° C, a significant decrease in the thickness of this corrosion layer was noted after four days. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|