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Some organic and inorganic compounds as inhibitors for carbon steel corrosion in 3.5 percent NaCl solution.
Anti-Corrosion Methods and Materials • 2006
Publication Information
Authors
Abdallah, M., El-Etre, A.Y., Soliman, M.G., Mabrouk, E.M.
Keywords
Carbon, Steel, Inorganic chemistry, Acids, Dyes
Journal
Anti-Corrosion Methods and Materials
Publisher
Emerald
Volume
53
Issue
(2)
Pages
118-123
publication.type
International
Paper Link
Open Link
Supplementary Materials
Not Available
Abstract
Purpose
– To study the effects of the sodium salts of molybdate, tungstate and monovanadate as well as some derivatives of Neville‐Winter acid azo dyes on the corrosion of carbon steel in 3.5 percent NaCl solution.
Design/methodology/approach
– Open circuit potential measurement and potentiostatic polarization techniques have been used.
Findings
– It was found that all the compounds had inhibition effects on carbon steel dissolution. Inhibition efficiency (IE) increased with increase in inhibitor concentration. The process of inhibition was attributed to the formation of an adsorbed film on the metal surface, which protects the metal against the corrosive medium. The adsorption of these compounds on the steel/chloride interface was found to follow Freundlich adsorption isotherm behaviour.
Originality/value
– Proves the effectiveness of the sodium salts of molybdate, tungstate and monovanadate as well as some derivatives of Neville‐Winter acid azo dyes on the corrosion of carbon steel in 3.5 percent NaCl solution.
– To study the effects of the sodium salts of molybdate, tungstate and monovanadate as well as some derivatives of Neville‐Winter acid azo dyes on the corrosion of carbon steel in 3.5 percent NaCl solution.
Design/methodology/approach
– Open circuit potential measurement and potentiostatic polarization techniques have been used.
Findings
– It was found that all the compounds had inhibition effects on carbon steel dissolution. Inhibition efficiency (IE) increased with increase in inhibitor concentration. The process of inhibition was attributed to the formation of an adsorbed film on the metal surface, which protects the metal against the corrosive medium. The adsorption of these compounds on the steel/chloride interface was found to follow Freundlich adsorption isotherm behaviour.
Originality/value
– Proves the effectiveness of the sodium salts of molybdate, tungstate and monovanadate as well as some derivatives of Neville‐Winter acid azo dyes on the corrosion of carbon steel in 3.5 percent NaCl solution.