Abstract
Perovskite La1−xSrxTiO3+δ oxide is used in various industrial applications because of its excellent physical and chemical properties, which beneficially affects the lifetime and performance of electronic and optical devices. This study illustrates the effects of the spray parameters on particles molten state, microstructure, and optical reflectivity from room temperature up to 1000°C of single-phase La1−xSrxTiO3+δ (x=0.1) coating deposited by atmospheric plasma spraying technique. The phase structure and surface morphology of the coating were examined using X-ray diffraction and scanning electron microscopy analysis, respectively, whereas the optical property coating was characterized by UV–visible–near infrared spectroscopy. Results show that plasma spray parameters significantly influenced the microstructure and optical performance of the La1−xSrxTiO3+δ coating, and oxygen deficiency during spraying considerably reduced the coating reflectivity. A high-reflectivity coating can be prepared by adopting optimized plasma spraying parameters and subsequent heat treatment.
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