Dielectric Strontium Zirconate Sprayed by a Plasma Torch

Authors

1 ASCR, Za Slovankou 3, Institute of Plasma Physics

2 Department of Elecrotechnology, Faculty of Electrical Engineering Czech, Czech Technical university

3 Chief of the LPT dislocated laboratory, Institute of Plasma Physics, ASCR, Za Slovankou 3

Abstract

Amultifunctional material, strontium zirconate, SrZrO3, studied in literatures as a dielectric ceramics, thermal barrier coating, proton-conductor, and luminescent material was sprayed by a water-stabilized plasma torch WSP 500. Stainless steel and plain carbon steel were used as substrates. Coatings with thickness of 1 to 2 mm were produced, whereas the substrates were preheated over 450 °C. The torch working at 150 kW was able to spray SrZrO3 with a spray rate of 10 kg per hour. Microstructure, phase composition, dielectric properties, and optical band gap were also investigated.

Keywords