Table 3 The parameters obtained from EIS in 0.5 M H2SO4 before and after adding 9 × 10− 5 M of KB1 and KB2 at various temperatures.

From: A comprehensive experimental and theoretical perspective of novel triazole-based pyridine and quinoline derivatives for corrosion protection of carbon steel in sulfuric acid solution

Temp, K

Compound

Rs, Ω cm²

Rct, Ω cm² ± SD

Goodness of fit (x10− 3)

θ

%IE

298

Blank

2.520

39.50 ± 0.24

3.732

–

–

KB1

2.660

300.7 ± 0.41

4.109

0.869

86.9

KB2

2.541

517.4 ± 0.57

3.341

0.924

92.4

308

Blank

2.018

27.86 ± 0.85

6.548

–

–

KB1

2.428

241.5 ± 0.53

3.849

0.885

88.5

KB2

2.609

420.3 ± 0.61

3.581

0.934

93.4

318

Blank

1.825

16.70 ± 0.57

2.737

–

–

KB1

2.714

150.4 ± 0.41

3.447

0.889

88.9

KB2

2.316

259.4 ± 0.69

5.030

0.936

93.6

328

Blank

1.862

11.17 ± 0.80

2.663

–

–

KB1

2.841

55.46 ± 0.76

2.942

0.799

79.9

KB2

2.532

120.4 ± 0.86

3.022

0.907

90.7

Back to article page