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Corrosion behavior of aluminum in molten hydrated salt phase change materials for thermal energy storage
| Content Provider | Scilit |
|---|---|
| Author | Zhao, Tianyu Munis, Adnan Rehman, Ata Ur Zheng, Maosheng |
| Copyright Year | 2020 |
| Description | Journal: Materials Research Express The corrosion behavior of aluminum 1060 in hydrated salt phase change materials (PCM) melts comprised of $Na_{2}HPO_{4}·12H_{2}$O - $Na_{2}SO_{4}·10H_{2}$O was investigated through electrochemical tests as a function of pH. The pH of PCM medium was adjusted by adding $H_{2}SO_{4}$ or NaOH. Electrochemical impedance spectroscopy reveals the existence of concentration difference layer at aluminum/PCM interface ascribed to the adsorption of PCM species and the formation of aluminum oxides. The observed anodic branch of DC polarization exhibits potential independence which is ascribed to the formation of surface oxide film and the accumulation of hydrogen molecules inside surface pores. The oxide film formed at neutral condition is characterized as the most compact and corrosion resistant while as the environmental pH shifts away from 7 the oxides/aluminum dissolution is accelerated and more aluminum 1060 substrate is exposed. |
| Related Links | https://iopscience.iop.org/article/10.1088/2053-1591/ab6c24/pdf |
| ISSN | 20531591 |
| e-ISSN | 20531591 |
| DOI | 10.1088/2053-1591/ab6c24 |
| Journal | Materials Research Express |
| Issue Number | 1 |
| Volume Number | 7 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2020-01-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Materials Research Express Metallurgy and Metallurgical Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Metals and Alloys Biomaterials Electronic, Optical and Magnetic Materials Polymers and Plastics |
