Allium Sativum (Garlic) Extract as Nontoxic Corrosion Inhibitor

Table 3

Corrosion parameters of carbon steel immersed in well water in the absence and presence of inhibitors. Inhibitor system: garlic extract + Zn²⁺ system.

System	𝐸corr	𝑏𝑎	𝑏𝑐	𝐼corr	LPR
	mV versus SCE	(mV/decade)	(mV/decade)	(A/cm^2)	Ohm cm^2
Well water	−704	229.7	177.7	2.600×10^−6	16757.3
Garlic extract (2 mL) + Zn^2+ (25 ppm)	−690	220.5	179.1	2.353×10^−6	17366.4