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

Figure 5

Surface morphology of the as-sprayed coatings: (a, b) nanostructured Al₂O₃ layer, (c, d) normal Al₂O₃ layer;  and (e, f) normal YSZ layer.

(a)

(b)

(c)

(d)

(e)

(f)