Naturally Occurring Elettaria cardamomum Extract as a Corrosion Inhibitor for the Dissolution of Zinc in 1.0 M HCl

Table 3

Effect of temperature on the corrosion parameters of zinc in 1.0 M HCl and 1.0 M HCl + 500 ppm of inhibitor.

System	T (K)	𝐸corr (mV SCE)	𝐼corr (Ma cm^−2)	IE (%)
1.0 M HCl	303	−996	2.41	—
	313	−1002	2.81	—
	323	−1001	3.96	—
	333	−999	4.73	—
	343	−1001	5.58	—
1.0 M HCl + 500 ppm inhibitor	303	−977	0.15	93.80
	313	−979	0.231	91.70
	323	−983	0.322	91.80
	333	−985	0.445	90.50
	343	−987	0.561	89.90