Fabrication of self-ordered porous alumina via anodizing in sulfate solutions
| Autor: | Ryosuke O. Suzuki, Tatsuya Kikuchi, Shungo Natsui, Ryunosuke Kondo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Fabrication Self-ordering Inorganic chemistry chemistry.chemical_element 02 engineering and technology Electrolyte Anodizing 010402 general chemistry 01 natural sciences Structural Aluminium General Materials Science Porous materials Porosity chemistry.chemical_classification Mechanical Engineering 021001 nanoscience & nanotechnology Condensed Matter Physics Sulfur 0104 chemical sciences chemistry Mechanics of Materials Acid salt 0210 nano-technology Porous medium Sodium hydrogen sulfate Aluminum |
| Zdroj: | Materials letters. 183:285-289 |
| ISSN: | 0167-577X |
| Popis: | Self-ordered porous alumina was fabricated via anodizing in an acid salt electrolyte solution, sodium hydrogen sulfate (NaHSO 4 ). High-purity aluminum specimens were anodized in a NaHSO 4 solution under various operating conditions with adjusted concentrations, temperatures, applied voltages, and times. Self-ordering was achieved via NaHSO 4 anodizing at appropriate applied voltages ranging from 20 to 28 V, and ordered cell arrangements with the cell size of 55–77 nm were successfully fabricated. Sulfur atoms originating from the electrolyte anions were incorporated into the ordered porous alumina. A honeycomb distribution consisting of a thick outer layer with a high concentration of sulfur and a very thin inner skeleton with a relatively low concentration sulfur was formed via NaHSO 4 anodizing. Our results suggested that there are now many electrolyte options for the fabrication of self-ordered porous alumina with a wide range of nanosizes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect