The formation mechanism of ZrO2, used for the stabilization of electrocatalytic thin films, from ZrOCl2.8H2O precursor was followed as the function of the firing temperature for the powder form as well as for the form of a thin film deposited on a titanium support. It was found that an intramolecular hydrolysis takes place upon heating, resulting in the liberation of hydrogen chloride. XRD, FT-IR and FT-Raman investigations revealed that polymorphism occurs in the oxide film. The upper surface of the film is of tetragonal structure, while the bulk is of cubic form stabilized by TiO2 formed by oxidation of the support.
Study of ZrO2 coatings by thermoanalytical and Fourier spectroscopic methods
NANNI, Luca;PATRACCHINI, Davide;DE BATTISTI, Achille
1997
Abstract
The formation mechanism of ZrO2, used for the stabilization of electrocatalytic thin films, from ZrOCl2.8H2O precursor was followed as the function of the firing temperature for the powder form as well as for the form of a thin film deposited on a titanium support. It was found that an intramolecular hydrolysis takes place upon heating, resulting in the liberation of hydrogen chloride. XRD, FT-IR and FT-Raman investigations revealed that polymorphism occurs in the oxide film. The upper surface of the film is of tetragonal structure, while the bulk is of cubic form stabilized by TiO2 formed by oxidation of the support.File in questo prodotto:
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