Quantitative fast Fourier transform based arrangement analysis of porous anodic oxide formed by self-organized anodization of FeAl intermetallic alloy
| Autor: | Tomasz Czujko, Jinsub Choi, Hyeonseok Yoo, Marta Michalska-Domańska, Wojciech J. Stępniowski, Paulina Chilimoniuk |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Anodizing Mechanical Engineering Metallurgy Alloy Oxide Intermetallic Sulfuric acid FEAL 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Mechanics of Materials engineering General Materials Science Composite material 0210 nano-technology Porosity Voltage |
| Zdroj: | Materials Letters. 164:176-179 |
| ISSN: | 0167-577X |
| Popis: | FeAl intermetallic alloy was anodized in 20 wt% sulfuric acid at 0 °C for 1 min at the voltage ranging from 5 to 20 V with a step of 2.5 V. Based on the FE-SEM images, fast Fourier transformed (2D-FFT) quantitative arrangement analysis of the porous oxide was performed for the oxide formed after the first and the second step of anodization. It was found that for voltages below 15 V FFT-derived regularity ratio values for both steps are comparable. For 15 V and greater voltages regularity ratio of the obtained anodic oxide is much better while a two-step procedure is employed. Conducted research revealed that two-step self-organized anodization improves regularity of the porous oxide formed on FeAl intermetallic alloy. Moreover, regularity ratio increases rapidly with the anodizing voltage for the second step of anodization. |
| Databáze: | OpenAIRE |
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