Study of Temperature Influence on Inhibitory Efficiency of Three Phosphate Inhibitors by Mass Loss
DOI:
https://doi.org/10.58681/ajrt.20040204Keywords:
Temperature, Concrete pores, Corrosion inhibitors, Phosphate, gravimetric measurements EfficiencyAbstract
The effect of temperature on steel samples immersed in concrete pore solutions contaminated by chlorides incorporating three inhibitors based on phosphate (Na3PO4, K2HPO4, and Na2PO3F) was studied by gravimetric measurements at several ranges: 298K, 308K and 318K. The results obtained for the use of these three products show that the inhibitory efficacy is lower at 318K, than that detected at 308K and 298K of temperature. In addition, we find that the best inhibitory efficiency at 298K was detected for Na2PO3F (75.80% at 0.05 mol/l of concentration) followed by K2HPO4 (65.05% at 2.5 10-3mol/l) and then Na3PO4 (61.48% at 7.5 10-3mol/l).
