Impact of Pretreatment of Metal Glass Fe70Cr15B15 on Anodization in 1-butyl-3-methylimidazolium Tetrafluoroborate Ionic Liquid
| Autor: | Sergei F. Dunaev, O. K. Lebedeva, Svetlana Philippova, Dmitry Kultin, Leonid M. Kustov, N. V. Root, Victoria Snytko, Irina Kuznetsova, K. B. Kalmykov, A. N. Zakharov |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:TN1-997
Tetrafluoroborate Materials science Alloy 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Corrosion chemistry.chemical_compound General Materials Science electrochemical oxidation lcsh:Mining engineering. Metallurgy ionic liquid Aqueous solution Amorphous metal corrosion Anodizing metallic glasses (or amorphous metals) Metals and Alloys self-assembly 021001 nanoscience & nanotechnology Isotropic etching 0104 chemical sciences chemistry Chemical engineering Ionic liquid engineering 0210 nano-technology |
| Zdroj: | Metals Volume 10 Issue 5 Metals, Vol 10, Iss 583, p 583 (2020) |
| ISSN: | 2075-4701 |
| DOI: | 10.3390/met10050583 |
| Popis: | The impact of preliminary treatment (mechanical abrasion chemical etching and anodization in ionic liquid) on the surface structure and corrosion behavior of Fe70Cr15B15 metal glass was studied. The detachment of the anodic oxide film from untreated Fe-amorphous alloy under anodization in ionic liquid was observed for the first time. The formation of hexagonal nanostructures (cells) on the surface of the Fe70Cr15B15 alloy after mechanical abrasion and following anodization in 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim][BF4]) ionic liquid was also detected for the first time. Electrochemical corrosion of the initial and pretreated amorphous alloy was tested in a Na2SO4 aqueous solution. The resistance to corrosion was found to be enhanced slightly after mechanical abrasion. The sample with hexagonal nanostructures obtained after anodization of the mechanically abraded sample demonstrated a more significant anodic shift in the corrosion potential (Ecorr = + 379 mV) compared with that for the initial alloy (Ecorr = &minus 125 mV). |
| Databáze: | OpenAIRE |
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