Table 2.

Variation in duty cycle

Parameter	Variation
Electropolishing conditions	I = 0.01–0.03 A, $V_{\text{m}}$ = 2.8 V, $V_{\text{f}}$ =2.0–2.2 V, T = 50 °C, m = 250 rpm, t = 70 min
Anodic time ($t_{\mathit{on}}$)	80, 100, 180, and 140 ms
Off time ($t_{\mathit{off}}$)	120, 100, 120, and 60 ms
Frequency (Hz)	5, 5, 3.33, 5
Duty cycle	40%, 50%, 60%, and 70%