Sodium Citrate as an Environmentally Friendly Corrosion Inhibitor of Steel in a Neutral Environment

Table 3

Impedance characteristics of 09G2S steel after exposure to 0.1% NaCl solution with different concentrations of sodium citrate.

(g/l)	(ohms⋅cm^2)		(ohms⋅cm^2)		(/ohms⋅cm^2)
	3 hours	24 hours	3 hours	24 hours	3 hours	24 hours	3 hours	24 hours
0	206	192	866	836			0.71	0.66
1.0	155	164	1540	1257			0.73	0.55
1.5	122	133	2323	1313			0.79	0.64
2.0	114	116	2269	1694			0.74	0.60
2.5	99	110	2677	1859			0.73	0.65