Elements-Added Diamond-Like Carbon Film for Biomedical Applications

Table 5

Surface contact angle, corrosion potential (E_corr), and corrosion current density (i_corr) of pure DLC, Si-DLC, and Si-N-DLC films.

Film type	Gas flow rate ratio	Contact angle (°)	Corrosion potential (Ecorr (V))	Corrosion current density (icorr (A/cm^2))
Uncoated AISI316L	—	93.47	−0.125	2.49E − 6
Pure DLC	—	79.33	−0.010	0.949E − 6
Si-DLC	1 : 2	88.93	0.198	0.887E − 6
	1 : 4	92.20	0.199	0.909E − 6
	1 : 6	92.47	0.398	0.280E − 6
Si-N-DLC	14 : 1 : 2	77.87	−0.001	0.931E − 6
	14 : 1 : 4	76.23	0.004	0.648E − 6
	14 : 1 : 6	77.53	0.198	0.570E − 6