Experiments and modeling of rapid solidification of plasma-sprayed yttria-stabilized zirconia

Template-free solvothermal synthesis of size-controlled yttria-stabilized-zirconia hollow spheres

“…acetylacetone undergoes alcoholysis in n-butanol to produce butyl acetate and acetone, which consumes acetylacetone and makes the reaction shown in Eq. (2) moving to the left, and release Zr 4+ ions. If the concentration of Zr 4+ reaches a critical value, Zr 4+ hydrolyzed to form amorphous solid nanospheres.…”

“…At atmospheric pressure, ZrO 2 has three polymorphs-cubic, tetragonal, and monoclinic-depending on the temperature [2]. If larger cations of lower valence (e.g., Y 3+ ) are substituted for Zr 4+ , the hightemperature structures (cubic and tetragonal) can be stabilized at room temperature because the substitution introduces oxygen vacancies which compensate for the difference in charge [3].…”

Effect of Microstructure on the Thermal Conductivity of Plasma Sprayed Y2O3 Stabilized Zirconia (8% YSZ)

“…The main aim is to reduce the thermal conductivity of engine components by using YSZ material prepared by the atmospheric plasma spray (APS) method [1,2]. The spraying parameters and deposition efficiency in the plasma process produce a variety of microscopic defects, with pores and cracks appearing in the coatings [3][4][5]. These microscopic defects have great influence on the thermal conductivity of TBCs [6].…”

Melting index characterization and thermal conductivity model of plasma sprayed YSZ coatings

“…1 The coatings have a typical lamellar structure with massive pores and cracks due to successive impinging and solidification of molten or semi-molten droplets during plasma spraying. [2][3][4] Moreover, these microstructure characteristics have strong influences on the thermal conductivity of coatings. 5 It is a complex and primary task to tailor the microstructure towards achieving expectant and reliable properties for full utilization of YSZ coatings.…”