Porosity is a key parameter on thermal barrier coatings, directly influencing conductivity and strain tolerance. Suspension high velocity oxy-fuel (SHVOF) spraying enables the use of sub-micron particles as feedstock, increasing control over porosity introducing nano-sized pores; these fine-scale porosities being challenging to measure. Neutron scattering represents non-destructive technique, c...

In this study, thermal barrier coatings (TBC) consisting of 3.5 mol% Yb2O3-stabilized ZrO2 co-doped with 1 Gd2O3 and Yb2O3 (referred to as GdYb-YSZ) were fabricated by means air plasma spraying. The as-fabricated exhibited a metastable tetragonal (t′) structure. hot-corrosion behavior the GdYb–YSZ TBCs was investigated at 700, 800, 900, 1000 °C for 10 h in presence V2O5 molten salt. During corr...

The objective of this paper is to manufacture free-standing solid oxide cells (SOCs) through the atmospheric plasma spray process (APS), without aid a metallic support nor need for post-process heating treatment. A five-layered cell was fabricated. Fused and crushed yttria-stabilized zirconia (YSZ) powder in 5–22 μm particle size range used order achieve dense electrolyte layer, yet still permi...

Residual stresses’ magnitude generated by deposition, quenching stress, thermal stress operation temperature, and infiltration in the barrier coating (TBC) of gas turbines was determined. A manufactured deposition two layers, CoNiCrAlY yttria-stabilized zirconia (YSZ), on an AISI 304 stainless steel substrate. The deposited using HVOF gun YSZ atmospheric plasma spray (APS). TBCs were heat-treat...

Solid oxide fuel cells are promising hydrogen energy devices. The goal of this research was to create ceramic layers for SOFCs based on yttria-stabilized zirconia (YSZ) and investigate their parameters. YSZ with a thickness 5.14 ?m porous NiO–YSZ substrate 7 pyrolytic graphite were obtained by electrophoretic deposition. X-ray diffraction electron microscopy used determine the composition, stru...

Composites formed by infiltration of 45 wt % La0.3Sr0.7TiO3 (LST) into 65% porous yttria-stabilized zirconia (YSZ) were examined for application as solid oxide fuel cell (SOFC) anodes. Although LST does not react with YSZ, the structure of the LST deposits was strongly affected by the calcination temperature. At 1373 K, the LST formed loosely packed, 0.1 μm particles that filled the YSZ pores. ...

Solid oxide fuel cells are a potential electrical power source that is silent, efficient, modular, and capable of operating on a wide variety of fuels. Unfortunately, current technologies are severely limited in that they provide sufficient power output only at very high temperatures (>800°C). One reason for this is because the electrodes have very poor (and poorly understood) kinetics. The wor...

For SOFCs to be main means of power generation, they should be able to exploit wide variety of fuels. Among Ni-cermets, Ni-YSZ is the state-of-the-art materials for the anode in SOFC which is the fuel electrode. But sulphur impurity present in different gaseous fuels (e.g Biogas), depending on its concentration, is highly poisonous to the stability and electrochemical performance of the Ni cata...