The effect of some organic compounds on the corrosion of pure Fe, pure Cr and Fe-Cr alloys in acidic solutions

摘要

The effect of tolyltriazole (TTA), phenol and phenol + propargyl alcohol (PA) on the corrosion of pure Fe, pure Cr and Fe-Cr alloys in H_2SO_4 and HCl was investigated b electrochemical methods. Corrosion Potentials, corrosion rates, polarization resistances and inhibition efficiencies were determined. The results showed That TTA and phenol have high inhibition efficiency on pure Fe and lower alloyed Fe-Cr alloys, but inhibition Efficiency decreases on higher alloyed Fe-Cr alloys with increasing Cr content in H_2SO_4 and HCl.