Table 2 EIS parameters and inhibition efficiency of mild steel in 1.0 M HCl as a function of PETPE concentration at 298 K.

From: Experimental and theoretical simulations to examine the influence of nonionic surfactant on the corrosion control of mild steel in hydrochloric acid

PETPE

(ppm)

Rs

(Ω cm2)

Cdl

(µF cm−2)

Rct

(Ω cm2)

χ2

PR%

Blank

1.3 ± 0.08

288 ± 5.4

9.4 ± 1.1

7.2 × 10−4

-

20

1.2 ± 0.07

122 ± 4.3

25.2 ± 2.4

5.3 × 10−4

62.6

40

1.1 ± 0.05

89 ± 3.7

52.6 ± 2.4

4.8 × 10−4

82.1

60

0.9 ± 0.04

74 ± 4.2

93.2 ± 3.2

2.6 × 10−4

89.9

80

0.8 ± 0.02

44 ± 2.3

129.8 ± 4.6

8.1 × 10−4

92.7

100

0.8 ± 0.03

23 ± 1.2

205.7 ± 4.4

4.6 × 10−4

95.4

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