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07072 INFLUENCE OF SILICATE-PHOSPHONATE MIXTURE ON CORROSION INHIBITION OF MILD STEEL IN SIMULATED SOFT WATER SOLUTION

Picture for 07072 INFLUENCE OF SILICATE-PHOSPHONATE MIXTURE ON CORROSION INHIBITION OF MILD STEEL IN SIMULATED S
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Product Number: 51300-07072-SG
ISBN: 07072 2007 CP
Author: Mobin Salasi, Taghi Shahrabi, and Emad Roayaei
Publication Date: 2007
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Synergistic effects of environment friendly compounds of sodium silicate and 1-hydroxyethylidene 1,1 diphosphonic acid (HEDP) on mild steel corrosion control in neutral and aerated soft water solutions have been investigated using electrochemical impedance spectroscopy and Tafel polarization techniques. The impedance and polarization results revealed that inhibitors mixtures have shown synergistic effects at lower value of HEDP. At 15ppm silicate and 10ppm HEDP showed optimum enhanced inhibition compared to their individual effects. The co-addition of 15ppm HEDP and 15ppm silicate have shown antagonistic behaviour. These observations have been supported by scanning electron microscopy (SEM) images, illustrating that the surface homogeneity increases in case of inhibitors mixture application and this provides good protection to mild steel against corrosion in soft water solution.
Synergistic effects of environment friendly compounds of sodium silicate and 1-hydroxyethylidene 1,1 diphosphonic acid (HEDP) on mild steel corrosion control in neutral and aerated soft water solutions have been investigated using electrochemical impedance spectroscopy and Tafel polarization techniques. The impedance and polarization results revealed that inhibitors mixtures have shown synergistic effects at lower value of HEDP. At 15ppm silicate and 10ppm HEDP showed optimum enhanced inhibition compared to their individual effects. The co-addition of 15ppm HEDP and 15ppm silicate have shown antagonistic behaviour. These observations have been supported by scanning electron microscopy (SEM) images, illustrating that the surface homogeneity increases in case of inhibitors mixture application and this provides good protection to mild steel against corrosion in soft water solution.
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