Machinability Performance Investigation of TiAlN-, DLC-, and CNT-Coated Tools during Turning of Difficult-to-Cut Materials

Table 1

Deposition parameters.

Flow rate of acetylene	3 cc/min
Flow rate of hydrogen	20 cc/min
Chamber pressure	2.5 × 10^−2 mbar
Microwave power	200 W
Bias voltage	550 V (on self-bias mode)
Deposition time	40–45 min