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

Table 1

The parameters of atmospheric plasma spraying (APS).

Parameter	NiCrAlY	YSZ	Normal Al2O3	Granulated nano-Al2O3 powders
Current (A)	450	550	500	500
Voltage (V)	50	70	70	50
Primary gas, Ar (L/min)	85	38	38	85
Secondary gas, H2 (L/min)	15	17	17	15
Powder feed rate (g/min)	15	35	30	25
Spray distance (cm)	15	7.5	9	10