Performance evaluation of phosphite NaCo(H2PO3)3·H2O as a corrosion inhibitor for aluminum in engine coolant solutions

M. A. Deyab; R. Essehli; B. El Bali

doi:10.1039/c5ra06611e

Performance evaluation of phosphite NaCo(H₂PO₃)₃·H₂O as a corrosion inhibitor for aluminum in engine coolant solutions

M. A. Deyab, R. Essehli, B. El Bali

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64 Scopus citations

Abstract

The inhibiting action of a novel inorganic compound (NaCo(H₂PO₃)₃·H₂O) (NaCoPh) synthesized in our laboratory on the corrosion of aluminum in engine coolant solutions has been studied. In this study, potentiodynamic polarization measurements with SEM/EDX investigations were employed. Polarization curves reveal that NaCoPh is a mixed type (cathodic/anodic) inhibitor for aluminum corrosion in the engine coolant solution. The inhibition efficiency increases with increasing concentration of NaCoPh but decreases with increasing temperature and flow rate. SEM/EDX investigations reveal the adsorption of NaCoPh on the aluminum surface. A mixed adsorption (physisorption and chemisorption) for NaCoPh was proposed.

Original language	English
Pages (from-to)	48868-48874
Number of pages	7
Journal	RSC Advances
Volume	5
Issue number	60
DOIs	https://doi.org/10.1039/c5ra06611e
State	Published - 2015
Externally published	Yes

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title = "Performance evaluation of phosphite NaCo(H2PO3)3·H2O as a corrosion inhibitor for aluminum in engine coolant solutions",

abstract = "The inhibiting action of a novel inorganic compound (NaCo(H2PO3)3·H2O) (NaCoPh) synthesized in our laboratory on the corrosion of aluminum in engine coolant solutions has been studied. In this study, potentiodynamic polarization measurements with SEM/EDX investigations were employed. Polarization curves reveal that NaCoPh is a mixed type (cathodic/anodic) inhibitor for aluminum corrosion in the engine coolant solution. The inhibition efficiency increases with increasing concentration of NaCoPh but decreases with increasing temperature and flow rate. SEM/EDX investigations reveal the adsorption of NaCoPh on the aluminum surface. A mixed adsorption (physisorption and chemisorption) for NaCoPh was proposed.",

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AU - Deyab, M. A.

AU - Essehli, R.

AU - El Bali, B.

N1 - Publisher Copyright: © The Royal Society of Chemistry 2015.

PY - 2015

Y1 - 2015

N2 - The inhibiting action of a novel inorganic compound (NaCo(H2PO3)3·H2O) (NaCoPh) synthesized in our laboratory on the corrosion of aluminum in engine coolant solutions has been studied. In this study, potentiodynamic polarization measurements with SEM/EDX investigations were employed. Polarization curves reveal that NaCoPh is a mixed type (cathodic/anodic) inhibitor for aluminum corrosion in the engine coolant solution. The inhibition efficiency increases with increasing concentration of NaCoPh but decreases with increasing temperature and flow rate. SEM/EDX investigations reveal the adsorption of NaCoPh on the aluminum surface. A mixed adsorption (physisorption and chemisorption) for NaCoPh was proposed.

AB - The inhibiting action of a novel inorganic compound (NaCo(H2PO3)3·H2O) (NaCoPh) synthesized in our laboratory on the corrosion of aluminum in engine coolant solutions has been studied. In this study, potentiodynamic polarization measurements with SEM/EDX investigations were employed. Polarization curves reveal that NaCoPh is a mixed type (cathodic/anodic) inhibitor for aluminum corrosion in the engine coolant solution. The inhibition efficiency increases with increasing concentration of NaCoPh but decreases with increasing temperature and flow rate. SEM/EDX investigations reveal the adsorption of NaCoPh on the aluminum surface. A mixed adsorption (physisorption and chemisorption) for NaCoPh was proposed.

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ER -

Performance evaluation of phosphite NaCo(H₂PO₃)₃·H₂O as a corrosion inhibitor for aluminum in engine coolant solutions

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