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The inhibition and the effect of temperature and concentration of 3-phosphonopropionic acid (3-PPA) on the corrosion of mild steel in groundwater was investigated by weight loss and potentiodynamic polarization experiments at temperatures ranging from 30 °C to 60 °C. The studied inhibitor concentrations were between 6 ppm to 18 ppm. The percentage inhibition increased with the increase of the concentration of the inhibitor. The percentage inhibition reached about 66.2% at the concentration of 12 ppm at 30 °C. On the other hand the percentage inhibition decreased with the increase of temperature.

Effect of Temperature on the Corrosion Inhibition of 3-Phosphonopropionic Acid on Mild Steel in Groundwater