Table 6 Linear polarization resistance parameters for API X60 mild steel in CO2 saturated 3.5% NaCl without and with 50 ppm TBA at pH 4 at different temperatures.

From: Eco-friendly 2-Thiobarbituric acid as a corrosion inhibitor for API 5L X60 steel in simulated sweet oilfield environment: Electrochemical and surface analysis studies

Temperature (°C)

Blank

50 ppm

Rp (Ω cm2)

CR (mpy)

Rp (Ω cm2)

CR (mpy)

%IE

25

142.6

69.5

4655

2.1

96.9

40

93.5

106.1

3952

2.5

97.6

60

64.5

153.7

3006

3.3

97.9

80

56.6

175.2

2801

3.5

98.0

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