Abstract
In the paper are presented the morphology of Al2O3 + TiO2 thin film produced by electrostatic spray deposition method and the results of investigations of its endurance when subjected to thermal cycles and slurry erosion. The film was produced in steam atmosphere by simultaneously spraying of colloidal suspension of Al2O3 nanoparticles in propanol-2 (as a solvent) with the addition of C10H20O5Si (to improve film adhesion) and 1 % solution of butoxy titanium Ti(OCH2CH2CH2CH3)4 in propanol-2 as a precursor of TiO2. Performed investigations showed that Al2O3 particles and TiO2 particles are uniformly distributed within the film, and that the weight content of aluminum and titanium is nearly the same. The thermal tests did not cause any fracture of the film but decreased film adhesion. Decreased adhesion of the film intensified degradation during slurry test.
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