Corrosion and Corrosion Inhibition of High Strength Low Alloy Steel in 2.0 M Sulfuric Acid Solutions by 3-Amino-1,2,3-triazole as a Corrosion Inhibitor

Table 1

Parameters obtained by fitting the EIS data with the equivalent circuit shown in Figure 4 for the HSLA steel in 2.0 M H₂SO₄ solutions.

Solution	Parameter
	/ cm^2			/ cm^2	/ cm^2		IE %
		/F cm^−2
2.0 M H2SO4 (10 min)	1.357	0.00145	0.80	6.766	3.204	15.347	—
+1.0 mM ATA (10 min)	1.491	0.00122	0.88	10.747	3.301	15.611	37.1
+5.0 mM ATA (10 min)	1.860	0.00103	0.92	14.000	3.977	16.92	51.7
2.0 M H2SO4 (60 min)	1.280	0.00257	0.84	5.354	2.279	13.73	—
+1.0 mM ATA (60 min)	1.434	0.00187	0.87	8.993	3.267	15.716	40.5
+5.0 mM ATA (60 min)	1.657	0.00179	0.92	12.07	3.355	16.602	55.64