In this study, mixed metal oxides Al2O3/MgO/TiO2 coatings with Al/Mg/Ti ratios of 5:1:3 and 2.5:3:4 were coated on AA1100 aluminum by sol-gel method. The surface morphology, phase analysis and the corrosion behavior of the Al2O3/MgO/TiO2 coatings were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), and electrochemical impedance spectroscopy measurements (EIS) in 3.5 wt.% NaCl solution. The thermal behaviors, the bonds configuration, and functional groups of the coated samples were studied by thermo-gravimetric and differential thermal analysis (TG-DTA) and Fourier transform infrared spectroscopy (FTIR), respectively. The results demonstrated that heat treatment at
450 °C caused an increase in porosity and coating cracking, finally leading to the decrease of corrosion resistance. The best corrosion resistance was achieved for the sample with Al/Mg/Ti molar ratio of 5:1:3 without any heat treatment. The structure of this sample was amorphous, and heat treatment resulted in crystallization and decrease of the corrosion resistance.
Z. Ansari, , M. Alizadeh, & A. Sadeghzadeh Attar, . (2022). Synthesis and Evaluation of Corrosion Behavior of Al2O3/MgO/TiO2 Mixed-Metal Oxides Coating by Sol-Gel Method on Al Substrate. Journal of Advanced Materials in Engineering, 33(2), 17-30.
MLA
Z. Ansari, , M. Alizadeh, & A. Sadeghzadeh Attar, . "Synthesis and Evaluation of Corrosion Behavior of Al2O3/MgO/TiO2 Mixed-Metal Oxides Coating by Sol-Gel Method on Al Substrate", Journal of Advanced Materials in Engineering, 33, 2, 2022, 17-30.
HARVARD
Z. Ansari , M. Alizadeh , A. Sadeghzadeh Attar . (2022). 'Synthesis and Evaluation of Corrosion Behavior of Al2O3/MgO/TiO2 Mixed-Metal Oxides Coating by Sol-Gel Method on Al Substrate', Journal of Advanced Materials in Engineering, 33(2), pp. 17-30.
CHICAGO
Z. Ansari, M. Alizadeh & A. Sadeghzadeh Attar, "Synthesis and Evaluation of Corrosion Behavior of Al2O3/MgO/TiO2 Mixed-Metal Oxides Coating by Sol-Gel Method on Al Substrate," Journal of Advanced Materials in Engineering, 33 2 (2022): 17-30,
VANCOUVER
Z. Ansari , M. Alizadeh , A. Sadeghzadeh Attar . Synthesis and Evaluation of Corrosion Behavior of Al2O3/MgO/TiO2 Mixed-Metal Oxides Coating by Sol-Gel Method on Al Substrate. J Adv Mater Eng. 2022;33(2):17-30 (In Persian).
