Effect of Zn/Mg ratio on cathodic protection of carbon steel using Al−Zn−Mg sacrificial anodes
| Autor: | Saad A. Saad, M.M. Sadawy, R. Abdel-Karim |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Carbon steel Galvanic anode Metals and Alloys 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology Condensed Matter Physics 01 natural sciences Casting Corrosion Cathodic protection Anode 0103 physical sciences Volume fraction Materials Chemistry engineering Particle size 0210 nano-technology Nuclear chemistry |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 30:2067-2078 |
| ISSN: | 1003-6326 |
| Popis: | Al−Zn−Mg alloys with different Zn/Mg mass ratios were evaluated as sacrificial anodes for cathodic protection of carbon steel in 3.5 wt.% NaCl solution. The anodes were fabricated from pure Al, Zn and Mg metals using casting technique. Optical microscopy, SEM−EDS, XRD and electrochemical techniques were used. The results indicated that with decreasing Zn/Mg mass ratio, the grain size of α(Al) and the particle size of the precipitates decreased while the volume fraction of the precipitates increased. The anode with Zn/Mg mass ratio >4.0 exhibited the lowest corrosion rate, while the anode with Zn/Mg mass ratio |
| Databáze: | OpenAIRE |
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