Evaluation of Normal and Nanolayer Composite Thermal Barrier Coatings in Fused Vanadate-Sulfate Salts at 1000°C

Figure 6

Surface morphology of the as-sprayed coatings with high magnification: (a) nanostructured Al₂O₃ layer, (b) normal YSZ layer, and (c) normal Al₂O₃ layer.

(a)

(b)

(c)