Table 2.

Electrochemical data obtained via equivalent circuit fitting of the EIS curves.

Samples	Rs (Ω·cm2)	Q1 (Ω−1·sn·cm−2)	n1	Rct (Ω·cm2)	Q2 (Ω−1·sn·cm−2)	n2	Rf (Ω·cm2)
AZ31 substrate	78.07	1.86 × 10−5	0.87	1153	1.42 × 10−3	0.90	465
DCPA coating	71.07	6.21 × 10−7	0.62	2254	5.92 × 10−5	0.70	5464
5 g L−1 DCPA coating	93.78	1.23 × 10−6	0.56	2046	5.65 × 10−5	0.50	5648
10 g L−1 DCPA coating	99.71	5.25 × 10−7	0.61	4298	4.21 × 10−5	0.61	4793