Acid Corrosion Inhibition of Steel by Lamotrigine

Table 1

Corrosion parameters obtained from weight loss measurements for steel in 1.0 M HCl and 0.5 M H₂SO₄ in presence of various concentrations of lamotrigine.

Corrosive; medium	Inhibitor; concentration	% 𝜂𝑤 at different temperature
	mM	30°C	40°C	50°C	60°C
HCl	Blank	—	—	—	—
	0.5	74.8	65.3	45.0	34.7
	1.0	92.2	87.1	75.4	63.2
	2.5	95.5	92.0	86.0	80.0
	5.0	96.1	94.2	89.2	85.5
H2SO4	0.5	66.8	57.8	47.6	34.0
	1.0	80.1	71.4	65.0	54.7
	2.5	89.4	86..3	81.0	76.5
	5.0	93.0	91.8	88.0	83.6