Abstract
The core–shell structures can improve material properties and easier material selections for applications in new purposes. In this study, yttria-stabilised zirconia (YSZ)/TiO2 feedstock powders were synthesised via the air plasma spray method to investigate morphology changes, phase transformations and formation of core–shell structure. X-ray powder diffraction, scanning electron microscope (SEM) and EDS were used for phase analysis, morphology and core-shell characterisation, respectively. Results revealed that YSZ/TiO2 core–shell powders can be employed using the plasma spray method. SEM images showed that entire TiO2 nanoparticles had melted around YSZ powder. The shell thickness was estimated between 1 and 5 μm. In the plasma process the YSZ monoclinic phases transformed to the tetragonal phases, but no changes were observed in the cubic phases.
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