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Table 1 EIS simulation results of copper surface in 1 M HCl with the presence of different inhibitor concentration

From: Corrosion inhibition properties of pyrazolylindolenine compounds on copper surface in acidic media

Elements→ Inhib.↓

Inhi. Conc. (mM l-1)

Rs(Ω cm2)

Rct(kΩ cm2)

n

QmS.sn. cm-2

Cdl(μF cm-2)

WmS.s1/2. cm-2

Blank

0.0

19.21

0.298

0.7142

7.35×10-3

149.3

4.05×10-4

InPzPh

1.0

357

2.044

0.7448

1.44×10-4

11.90

5.88×10-4

 

2.0

27.2

2.562

0.8910

4.32×10-5

14.63

5.23×10-3

 

3.0

59.2

2.923

0.9132

4.41×10-5

18.31

5.26×10-3

 

4.0

28

4.32

0.9104

1.44×10-4

57.25

5.06×10-3

InPzTH

2.5

31.17

35.92

0.6573

1.55×10-4

2.27

 
 

2.0

36.2

21.14

0.6762

2.77×10-4

5.65

 
 

1.5

18.92

11.56

0.7060

4.05×10-4

15.49

 
 

1.0

27.23

1.8

0.852

4.83×10-4

17.31

 

InPzTAm

2.0

30.40

174.5

0.8263

2.62×10-6

0.24

 
 

1.5

24.23

143.5

0.8782

1.18×10-6

0.23

 
 

1.0

17.39

68.7

0.8060

3.13×10-6

0.39

 
 

0.5

17.48

56.5

0.8089

3.03×10-6

0.27

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