A Characteristic Investigation of Aminocyclohexane-N′-methylurea as a Corrosion Inhibitor for Mild Steel in 1 N H₂SO₄

Table 2

Inhibition efficiency of ACMU on mild steel corrosion in 1 N H₂SO₄ at various temperatures.

Concentration of inhibitor (N)	303 K			318 K			333 K
	Corrosion rate; (mmpy)	Surface coverage; (θ)	Inhibition efficiency; (%)	Corrosion rate; (mmpy)	Surface coverage; (θ)	Inhibition efficiency; (%)	Corrosion rate; (mmpy)	Surface coverage; (θ)	Inhibition efficiency; (%)
Blank	20.061	—	—	67.539	—	—	390.968	—	—
0.001	8.470	0.5778	57.78	33.658	0.5017	50.17	218.666	0.4407	44.07
0.005	6.687	0.6667	66.67	26.748	0.6040	60.40	160.266	0.5901	59.01
0.010	5.795	0.7111	71.11	21.176	0.6865	68.65	135.078	0.6545	65.45
0.015	4.235	0.7889	78.89	17.832	0.7360	73.60	119.029	0.6956	69.56
0.020	3.121	0.8444	84.44	12.928	0.8086	80.86	107.884	0.7241	72.41