The aim of the study was to characterize alumina-titania (Al₂O₃:Ti wt ratio = 87:13) coatings were deposited by a new multi-chamber gas-dynamic accelerator on a grit blasted steel substrate. The alumina-titania coatings were characterized using scanning electron microscopy. X-ray diffraction techniques and Vickers hardness tester at a test load 200 g. The coating was well-adhered onto corrosion-resistant steel substrate. Obtained coatings possessed a unique microstructure consisting of fully melted regions with the microstructure similar to a typical thermal sprayed lamellar morphology and areas comprising unmelted or partially melted particles. The dense alumina-titania coatings with hardness of 657 ± 70 HV₂ and porosity of less than 0,6 % have been prepared by a new multi-chamber gas-dvnamic accelerator.

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