This study aims to investigate the microstructural alterations, mechanical properties, sliding wear behavior, and corrosion properties of Al-15%Mg2Si composites with different contents yttria-stabilized zirconia (YSZ). YSZ (0, 3, 6, 9 wt.%) were fabricated using stir-casting technique. The characterized by means optical microscopy (OM), scanning electron (SEM) equipped energy-dispersive spectro...

Firstly, the yttria-stabilized zirconia (YSZ) coating and gadolinium zirconate (GZO) with quasi-columnar structure were manufactured by plasma spray physical vapor deposition. At same time, a novel three-dimensional geometrical model was established that could satisfactorily reflect such structural characteristics. Then, based on this model, spatial distribution of pores porosity coatings therm...

Effect of nano-structuration and compounding of YSZ APS TBCs investigated on coating behavior in thermal shock conditions. The coatings were applied on Inconel 738 discs with three different thickness per powder. In order to harmonize the results from the samples, performance factor is defined as a criterion that in the starting of the activity has an amount of about 100 and is reduced after th...

The oxygen tracer diffusion coefficient describing transport along nano-/microscaled YSZ/Sc2O3 multilayers as a function of the thick-ness of the ion-conducting YSZ layers has been measured by isotope exchange depth profiling (IEDP), using secondary ion mass spec-trometry (SIMS). The multilayer samples were prepared by pulsed laser deposition (PLD) on (0001) Al2O3 single crystalline substrates....

Solid oxide electrochemical reactors (SOERs) may be operated in fuel cell (SOFC) or electrolyser (SOE) modes, at temperatures > 800 K, depending on electrolyte and electrode materials. In mode, current densities of ≥ ca. 104 A m−2 are achievable potential differences ideally the thermoneutral values 1.285 V for steam splitting 1.46 CO2 750 °C. As large scale chemical processes general, such req...

Gadolinium zirconate (GZ) is an attractive material for thermal barrier coatings (TBCs). However, a single layer GZ coating has poor cycling life compared to Yttria Stabilized Zirconia (YSZ). In this study, Solution Precursor High Velocity Oxy-Fuel (SP-HVOF) spray was used produce double GZ/YSZ TBC and the performance with YSZ TBC. The temperature behaviour of solution precursor studied, splat ...

Microstructural evolution of Nickel in Ni-YSZ fuel electrodes is one the main limiting degradation mechanisms solid oxide cells [1]. The redistribution ascribed to its high mobility and low wettability with YSZ, related interfacial surface tensions. Practically, manifests as agglomeration Ni, potentially accompanied by migration, mainly reported electrolysis mode.

The mechanisms for the resistance to sulfur poisoning at the triple phase boundary (TPB) of the Ni/yttria-stabilized zirconia (YSZ) system treated with Sn vapor are studied using the first-principles method based on density functional theory. Models with Sn dopant or adsorbate are proposed. It is found that the TPB model of the Ni/YSZ system with Sn dopant in Ni can to some extent restrain the ...

In this work, we found that sodium doping can be used to improve CO2 selectivity for supported Pt catalyst during methanol steam reforming. These materials are usually very active in the low temperature range; however, they are characterized by high selectivity of CO, which is a poison in downstream polymer electrolyte membrane fuel cells (PEM-FC) application. With Na doping, we found that CO2 ...

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...