Corrosion of stainless steel 316 in eutectic molten salts for thermal energy storage
| Autor: | Geoffrey Will, Madjid Sarvghad, Theodore A. Steinberg |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Materials science Renewable Energy Sustainability and the Environment 020209 energy Metallurgy Compatibility (geochemistry) Salt (chemistry) 02 engineering and technology Microscopy and Microanalysis Electrochemistry Thermal energy storage Corrosion chemistry 0202 electrical engineering electronic engineering information engineering General Materials Science Grain boundary Eutectic system |
| Zdroj: | Solar Energy. 172:198-203 |
| ISSN: | 0038-092X |
| DOI: | 10.1016/j.solener.2018.03.053 |
| Popis: | Stainless steel 316 was examined for compatibility with the eutectic mixtures of NaCl + Na2CO3 and NaCl + Na2SO4 at 700 °C and Li2CO3 + K2CO3 + Na2CO3 at 450 °C in air for thermal energy storage. Electrochemical measurements combined with advanced microscopy and microanalysis techniques were employed. NaCl + Na2CO3 was found as the most aggressive salt at 700 °C. The attack morphology on the surface was uniform corrosion with no localized degradation at 450 °C. Microscopy observations showed grain boundary oxidative attack as the primary corrosion mechanism at 700 °C with depletion of alloying elements from grain boundaries. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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