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Table 5 Polarization parameters and the corresponding inhibition efficiency of mild steel corrosion in 1 M H 2 SO 4 in the presence of optimum concentration of inhibitor at different temperatures

From: Water-based acrylic copolymer as an environment-friendly corrosion inhibitor onto carbon steel in 1 M H2SO4 in static and dynamic conditions

T (°C)

Solution

Ecorr(mV vs. SCE)

Icorr(mAcm−2)

βc(mV/dec)

βa(mV/dec)

θ

η(%)

25

Blank

−482

0.606

102

101

0.22

22%

Copolymer

−46

0.469

101

50

30

Blank

−471

1.399

136

100

0.42

42%

Copolymer

−467

0.793

104

54

40

Blank

−468

4.279

141

106

0.70

70%

Copolymer

−480

1.260

117

78

50

Blank

−471

8.519

161

129

0.50

50%

Copolymer

−469

4.187

134

83