Enhanced corrosion resistance of magnesium alloy AM60 by cerium(III) in chloride solution
F. El-Taib Heakal; O.S. Shehata; Noura Saad tantawy;
Abstract
Cerium(III) was utilised to enhance the corrosion resistance of AM60 in NaCl solution. Ce3+ can suppress
corrosion deterioration up to 1.0 mM. Beyond that level corrosion rate increases till a steady value. Surface
film resistance increases with time evolution until 24 h, then decreases and stabilizes. The converted
film after 240 h immersion exhibits self-healing and thickening when re-exposed to plain chloride solution.
SEM and EDX confirmed that when Ce is present as additive in solution, more compact coating is
formed better than its presence as a post coating on the alloy surface before being immersed in the corrosive
environment.
corrosion deterioration up to 1.0 mM. Beyond that level corrosion rate increases till a steady value. Surface
film resistance increases with time evolution until 24 h, then decreases and stabilizes. The converted
film after 240 h immersion exhibits self-healing and thickening when re-exposed to plain chloride solution.
SEM and EDX confirmed that when Ce is present as additive in solution, more compact coating is
formed better than its presence as a post coating on the alloy surface before being immersed in the corrosive
environment.
Other data
Title | Enhanced corrosion resistance of magnesium alloy AM60 by cerium(III) in chloride solution | Authors | F. El-Taib Heakal; O.S. Shehata; Noura Saad tantawy | Keywords | EIS;Magnesium;Neutral inhibition;SEM;Polarisation | Issue Date | 2012 | Publisher | Elsevier Ltd. | Journal | Corrosion Science | Volume | 56 | Start page | 86 | End page | 95 |
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