Authors: Phạm Thị Hà, Phạm Thị Lý, Nguyễn Văn Tuấn, Lê Thu Quý. 

Journal: Journal of Chemistry, 55(5E1,2): 49-53, 2017.

Year of publication: 2017

Abstract: In the present study, Al₂O₃-40 wt.% TiO₂ composite coatings were fabricated on CT3 steel substrate by plasma spraying technique. The coatings were sealed with aluminum phosphate solution contained 5 wt.% Al₂O₃ nanoparticles and then heat treated at 400°C. The corrosion protective resistance ability of the coating in NaCl solution was studied by electrochemical measurements in combination with scanning electron microscope (SEM) method. The study results showed that the corrosion resistance of Al₂O₃.40 wt.% TiO₂ coating sealed with aluminum phosphate contained Al₂O₃ nanoparticles is better than the coating sealed with aluminum phosphate uncontain Al₂O₃ nanoparticles and the unsealed coating. Some interpretation and discussion about the experimental results were given.

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