Ionic conductivity and thermal stability of magnetron-sputtered nanocrystalline yttria- stabilized zirconia
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منابع مشابه
Effect of ion implantation doping on electrical properties of yttria-stabilized zirconia thin films
The change in conductivity of Fe and Ti implanted if-sputtered layers of yttria-stabilized zirconia (YSZ) was studied as a function of the temperature (400-800 °C) and oxygen partial pressure. In an oxidized state and in the temperature range of 400600 ° C, the conductivity of the Fe implanted YSZ film ( 15 keV, 8 × 10 '6 at.cm 2) was dominated by the n-type electronic conductivity of a thin Fe...
متن کاملEffect of high-temperature aging on the thermal conductivity of nanocrystalline tetragonal yttria-stabilized zirconia
The thermal conductivity of yttria-stabilized zirconia (YSZ) thermal barrier coatings increases with high-temperature aging. This common observation has been attributed to the densification of the coatings as porosity sinters out and pores and cracks spheroidize to minimize their surface energy. We show that the thermal conductivity of fully-dense 3 mol.% Y2O3 stabilized zirconia (3YSZ) also in...
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We report very high lateral ionic conductivities in epitaxial cubic yttria-stabilized zirconia synthesized on single crystal SrTiO3 and MgO substrates by reactive direct current magnetron sputtering. Superionic conductivities (i.e., ionic conductivities of the order ~1 Ω -1 cm -1 ) are observed at 500 oC for 58-nm-thick films on MgO. Our results indicate a superposition of two parallel contribu...
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An yttria stabilised zirconia which exhibits a coreshell microstructure was investigated as a method to produce a zirconia with high ionic conductivity and improved thermal shock resistance. Zirconia grains consist of an outer shell of tetragonal zirconia with an inner core of monoclinic phase zirconia. Impedance spectroscopy was used to identify the eect of processing conditions on the grain ...
متن کاملComparative Study of Plasma Sprayed Yittria and Ceria Stabilized Zirconia Properties
Thermal Barrier Coatings are subjected to spallation and destabilization due to hot corrosion.Recently, Ceria Stabilized Zirconia (CSZ)-based TBCs have been intensively investigated for the YSZreplacement because CSZ has a much lower thermal conductivity and a higher expected thermalexpansion coefficient than those of YSZ. In this research, Yttria stabilized zirconia (YSZ) andceria stabilized z...
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