Study on gas permeation behaviour through atmospheric plasma-sprayed yttria stabilized zirconia coating

Effect of in-flight particle characteristics on the coating properties of atmospheric plasma-sprayed 8mol% Y2O3–ZrO2 electrolyte coating studying by artificial neural networks

“…Fox et al [25] also reported a specific gas permeability of 0.6 × 10 − 16 to 1.8 × 10 − 16 m 2 for APS 4.9 mol% Y 2 O 3 -stabilized YSZ coating. The present results are reasonable compared with those reported by Fox et al Zhang et al [40] suggested explaining the gas permeation behaviour through APS 8YSZ coating by the combination of viscous flow and Knudsen flow models. The same gas permeation mechanism could be adopted to explain the gas permeability results in this study.…”

Random-packing model for solid oxide fuel cell electrodes with particle size distributions

“…However, any type of distribution can be implemented, such as a real case shown in Fig. 2d [17]. In practical, SOFC powders always permit the successful application of lognormal distribution [17][18][19].…”

“…This depends on sampling object. For instance, the sampling object of a laser particle size analyzer is particle volume [17], while the method in Ref. [6] and this study uses particle number as the sampling object.…”

Deposition of nanostructured YSZ coating from spray-dried particles with no heat treatment

“…A theoretical study on the behaviour of porous particles in the plasma plume conducted by Hurevich et al [20] shows that the heat transfer between the plasma jet and in-flight particles was hindered by the porous nature of the agglomerated particles. Experimental studies regarding the influences of feedstock powder characteristics on particle temperature and velocity manifested that the size, shape, flow ability, and specific mass [21,22] of the feedstock powder greatly affects its aerodynamic behaviour, including the flattening degree of molten droplets, the adhesion/cohesion of splats, and, in the end, influences the coating structure [23][24][25]. Therefore, the characteristics of feedstock powder are also important factors in the retention of the original nanostructure in the as-sprayed coatings, which cannot be neglected.…”