Table 2 Magnitudes of \({I}_{l}\) and %IE for EP of C-steel in 8M H3PO4 and various concentrations of QA at temperatures varied from 298 to 313 K.

From: Theoretical and electrochemical performance of Quinazoline Schiff-base hybrid as levelling agents for C-steel electropolishing in acidic medium

Levelling Agent

C*10–3

(mol/L)

298K

303K

308K

313K

\({I}_{l}\)(A)

%IE

\({I}_{l}\)(A)

%IE

\({I}_{l}\)(A)

%IE

\({I}_{l}\)(A)

%IE

m-CH3-QA

Blank

1.85

0.00

2.2

0.00

2.37

0.00

2.50

0.00

0.332

1.20

35.14

1.57

28.64

1.80

24.05

1.91

23.60

0.549

1.15

37.84

1.42

35.45

1.75

26.16

1.86

25.60

0.763

1.00

45.95

1.27

42.27

1.65

30.38

1.76

29.60

0.973

0.87

52.97

1.15

47.73

1.56

34.18

1.66

33.60

1.18

0.75

59.46

1.02

53.64

1.40

40.93

1.57

37.20

1.38

0.70

62.16

0.93

57.73

1.36

42.62

1.46

41.60

1.58

0.65

64.86

0.87

60.45

1.27

46.41

1.38

44.80

1.78

0.62

66.49

0.75

65.91

1.20

49.37

1.32

47.20

2.07

0.59

68.11

0.71

67.73

1.15

51.48

1.26

49.60

2.54

0.50

72.97

0.67

69.54

1.08

54.43

1.23

50.80

3.00

0.43

76.76

0.65

70.45

0.99

58.23

1.14

54.40

3.43

0.31

83.24

0.55

75.00

0.70

70.46

1.05

58.00

o-Cl-QA

Blank

1.85

0.00

2.20

0.00

2.37

0.00

2.50

0.00

0.332

1.30

29.73

1.65

25.00

1.89

20.25

2.12

15.20

0.549

1.25

32.43

1.45

34.09

1.86

21.52

2.01

19.60

0.763

1.11

40.00

1.33

39.55

1.75

26.16

1.87

25.20

0.973

0.93

49.73

1.22

44.55

1.58

33.33

1.75

30.00

1.18

0.84

54.59

1.12

49.09

1.50

36.71

1.62

35.20

1.38

0.76

58.92

0.98

55.45

1.45

38.82

1.58

36.80

1.58

0.70

62.16

0.89

59.55

1.36

42.62

1.41

43.60

1.78

0.66

64.32

0.82

62.73

1.24

47.68

1.35

46.00

2.07

0.63

65.95

0.80

63.64

1.14

51.90

1.30

48.00

2.54

0.57

69.19

0.75

65.91

1.10

53.59

1.28

48.80

3.00

0.52

71.89

0.68

69.09

1.01

57.38

1.18

52.80

3.43

0.43

76.76

0.58

73.64

0.92

61.18

1.11

55.60

p-(CH3)2N-QA

Blank

1.85

0.00

2.20

0.00

2.37

0.00

2.50

0.00

0.332

1.35

27.03

1.70

22.73

1.99

16.03

2.22

11.20

0.549

1.31

29.19

1.50

31.82

1.94

18.14

2.05

18.00

0.763

1.22

34.05

1.36

38.18

1.78

24.89

1.91

23.60

0.973

1.07

42.16

1.29

41.36

1.63

31.22

1.76

29.60

1.18

1.00

45.95

1.17

46.82

1.56

34.18

1.72

31.20

1.38

0.90

51.35

1.05

52.27

1.48

37.55

1.68

32.80

1.58

0.87

52.97

1.00

54.55

1.39

41.35

1.54

38.40

1.78

0.85

54.05

0.92

58.18

1.28

45.99

1.50

40.00

2.07

0.83

55.14

0.85

61.36

1.18

50.21

1.48

40.80

2.54

0.81

56.22

0.83

62.27

1.16

51.05

1.43

42.80

3.00

0.77

58.38

0.82

62.73

1.08

54.43

1.33

46.80

3.43

0.72

61.08

0.78

64.55

1.04

56.12

1.25

50.00

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