The Inhibitory Action of the Extracts of Adathoda vasica, Eclipta alba, and Centella asiatica on the Corrosion of Mild Steel in Hydrochloric Acid Medium: A Comparative Study

Table 7

Values of hydrogen permeation current for the corrosion of mild steel in 1N HCl alone and in the presence of inhibitors.

Inhibitor	Conc. of the extract (% in v/v)	Permeation current (𝜇A)	Reduction in permeation current (%)
Blank	—	23.0	—
Adathoda vasica	6.0	3.1	86.52
Eclipta alba	8.0	2.2	90.43
Centella asiatica	10.0	19.4	15.65