Abstract
A limiting feature of the plasma spraying is the need for powders to melt and react each other during its passage through the plasma flame. In case of using the mixture of ordinary sized powders, it is quite impossible to obtain coatings with new composition. Agglomeration techniques were used to prepare the fine powders of SrCO3 and TiO2. SrTiO3 and donor-doped SrTiO3 coatings were produced by plasma spraying of the agglomerated powders. The formation of SrTiO3 was established by X-ray diffraction analysis. Influence of La2O3 additions on the resistivity and the electric constant were evaluated in SrTiO3 and donor-doped SrTiO3 coatings.
