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Al-alloy (AA5022) corrosion penetration (CP) and crystal structure were investigated after running static immersion corrosion tests in 1 mol/L HCl solution and different concentrations of rare earth elements (La3+), (Ce3+) and their combination, at different temperatures. X-ray diffraction (XRD) was used to examine the surface structure before and after immersion, and secondary electron detector (SED) was operated to study surface morphology. In 1 mol/L HCI solution the corrosion penetration increased with increasing temperature and immersion time. The increase of La3+ concentrations up to 1000×10-6 g/L led to the decrease in the corrosion penetration, and the decrease in Ce3+ concentrations up to 50×10-6 g/L decreases the corrosion penetration of the alloy. Mix3 (combination of La3+ and Ce3+) dramatically reduced the corrosion penetration. This suggests that a synergistic effect exists between La3+ and Ce3+. The reaction kinetics both in absence and presence of La3+ and Ce3+ and their combination woul
Al-alloy (AA5022) corrosion penetration (CP) and crystal structure were investigated after running static immersion corrosion tests in 1 mol / L HCl solution and different concentrations of rare earth elements (La3 +), (Ce3 +) and their combination, at different temperatures . X-ray diffraction (XRD) was used to examine the surface structure before and after immersion, and secondary electron detector (SED) was operated to study surface morphology. In 1 mol / L HCI solution the corrosion penetration increased with increasing temperature and immersion The increase of La3 + concentrations up to 1000 × 10-6 g / L led to the decrease in the corrosion penetration, and the decrease in Ce3 + concentration up to 50 × 10-6 g / L decreases the corrosion penetration of the alloy. Mix3 (combination of La3 + and Ce3 +) dramatically reduced the corrosion penetration. This suggests that a synergistic effect exists between La3 + and Ce3 +. The reaction kinetics both in absence and presence of La3 + and Ce3 + and the ir combination woul