Polarization Resistance Study on Copper Corrosion in Aqueous Potassium Hydrogen Phthalate Solution

Abstract

The effect of temperature on corrosion of copper in 0.1 M aqueous solution of potassium hydrogen phthalate (KHPh) has been investigated using polarization resistance technique. it was found that that the corrosion rate in the range 25�65�C obyes Vant Hoff's and Arrhenius Laws. The results indicate that corrosion of copper in KHPh is mainly cathodically controlled process. The polarization resistance decreases with rising the temperature in accordance with Stern-Geary equation.