The bulk and emerging interface properties of magnetite Fe3O4/YSZ(001) heterostructures grown by pulsed laser deposition are investigated. Fe3O4 thin films (4–38 nm) grow epitaxially in (111) orientation undergo a Verwey transition at max. TV = 117±0.6K. Surprisingly, the formation interfacial Fe2O3 phase is observed albeit quasi-inert yttrium-stabilized zirconia (YSZ). Possible mechanisms incl...

The bulk and emerging interface properties of magnetite Fe3O4/YSZ(001) heterostructures grown by pulsed laser deposition are investigated. Fe3O4 thin films (4–38 nm) grow epitaxially in (111) orientation undergo a Verwey transition at max. TV = 117±0.6K. Surprisingly, the formation interfacial Fe2O3 phase is observed albeit quasi-inert yttrium-stabilized zirconia (YSZ). Possible mechanisms incl...

We present the ReaxFF reactive force field developed to provide a first-principles-based description of oxygen ion transport through yttria-stabilized zirconia (YSZ) solid oxide fuel cell (SOFC) membranes. All parameters for ReaxFF were optimized to reproduce quantum mechanical (QM) calculations on relevant condensed phase and cluster systems. We validated the use of ReaxFF for fuel cell applic...

The electrical conductivity of dense and nanoporous zirconia-based thin fi lms is compared to results obtained on bulk yttria stabilized zirconia (YSZ) ceramics. Different thin fi lm preparation methods are used in order to vary grain size, grain shape, and porosity of the thin fi lms. In porous fi lms, a rather high conductivity is found at room temperature which decreases with increasing temp...

Combinations of NiCoCrAlY APS and high-velocity oxygen fuel (HVOF) bond coatings were deposited on alloy 247 disk substrates with yttria-stabilized zirconia (YSZ) top to assess the benefit air plasma sprayed (APS) ‘flash’ coatings. Using 1-h cycles at 1100 ℃ in 10% H2O HVOF-only APS-only as a baseline, it was found that flash extended average coating lifetime by 16% 35% thicker performing best....

In this study, (Gd0.9Yb0.1)2Zr2O7 (GYbZ)/yttria-stabilized zirconia (YSZ) double-ceramic-layer (DCL) thermal barrier coatings (TBCs) were prepared by plasma spray-physical vapor deposition (PS-PVD). The microstructure, mechanical performance, and shock behavior of with spraying distances 600, 800, 1000 mm investigated. GYbZ coating a distance 600 showed closely packed columnar structure. Howeve...

In this work, we show the epitaxial growth of (111)-oriented EuTiO3 thin films on (001)-oriented silicon with an in situ grown yttria-stabilized zirconia (YSZ) buffer layer by pulsed laser deposition. X-ray diffraction measurements revealed a homogeneously strained film strain dependency fluence during growth. From magnetization vs temperature measurements, confirmed that have antiferromagnetic...

Abstract Yttria-stabilized zirconia (YSZ) has been used as a thermal barrier coating (TBC) material in gas turbines for several decades. Although continuous efforts have made to develop novel TBC materials that can work at higher temperature, no single other than YSZ all the desired attributes TBCs. In this paper, we report in-situ synthesis of quasi-binary GdNbO 4 /Gd 3 NbO 7 composites based ...

Abstract Yttria-stabilized zirconia (YSZ) fiber composites are highly efficient thermal insulating materials; however, the poor shock resistance limits their versatile applications. In present study, YSZ was mixed directly with Al2TiO5 fiber, which had an extremely low expansion coefficient, to prepare YSZ−Al 2 TiO 5 (ZAT) by compression molding and heat treatment. The minimum coefficient of pr...

Abstract Lanthanum zirconate (LZ) has emerged as a novel thermal barrier coating (TBC) material because of its higher temperature phase stability, and low sintering ability than the current standard yttria-stabilized zirconia (YSZ). In order to combine advantages, LZ YSZ feedstock powders are blended with predetermined weight ratios (50:50) composite coatings. The leading issue in developing us...