The Influence of Anode Inner Contour on Atmospheric DC Plasma Spraying Process

Table 1

Spraying parameters for online measurement and Al₂O₃ coatings deposition.

Case	Current (A)	Ar (slpm)	H2 (slpm)	Spraying distance (mm)
I	650	40	10	60–150
II	450, 550, 650	40	10	90
III	550	40, 50, 60, 70, 80	10	90
IV	550	60, 62, 64, 66, 68	10, 8, 6, 4, 2	90
V	650	40	10	70, 90, 110
VI	650	40	10	90, 110, 130

Note. () Case III, the flow rate of H₂ maintains 10 slpm; () Case IV, the total flow rate of mixture gas is 70 slpm.