Synergetic Effect between Phenolic Extracts of Ammi visnaga and Zea mays Formulation on the Corrosion of Mild Steel in 1 M HCl Solution

Table 3

Electrochemical impedance parameters for mild steel in 1 M HCl in the presence and absence of 0.01 gL⁻¹ HE (AV)/0.2 gL⁻¹ HE (ZM) at different temperatures.

	T	Rs	Rct	Qdl	Cdl	Rf	Qf	Rp	ɳEIS%
Blank	298	1.1	58	373	118.8	—	—	—	—
	313	1.3	34	450	109.2	—	—	—	—
	323	1.1	13	604	127.8	—	—	—	—
	333	1.2	11	690	138.4	—	—	—	—
Mixture	298	6.5	1447	27	19.6	325	26.8	1703	96.59
	313	3.1	827	123	29.52	81	46	909	96.25
	323	2.6	354	170	30.00	29	47	383	84.85
	333	3.4	269	180	34.75	15	123	284	79.57

Note: T in K, R_f, R_ct, R_P, and R_s in Ω cm⁻², Q_f and Q_dl in µF sⁿ⁻¹ cm⁻², and C_dl in µF cm⁻².