Anodic behaviour and pitting corrosion of plain carbon steel in NaOH solutions containing Cl- ions

Haleem, S. M. Abd El; Rehim, Sayed S. Abd El; Shalaby, M.Sh.

doi:10.1016/0257-8972(86)90127-1

Cited by 5 publications

(5 citation statements)

References 11 publications

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“…The molecular structure of the starch suggests that it has strong potential to become an effective corrosion inhibitor. A survey of literature indicates that only few references are available dealing with the corrosion inhibition effect of starch on aluminum21, 22 and steel 23. More recently, modified cassava starches were evaluated as corrosion inhibitor for carbon steel under alkaline conditions in 200 mg/L NaCl solutions 24.…”

Section: Introductionmentioning

confidence: 99%

Inhibition of mild steel corrosion in acidic medium using starch and surfactants additives

Mobin

Khan

Parveen

2011

J of Applied Polymer Sci

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The corrosion inhibition of mild steel in 0.1M H 2 SO 4 in presence of starch (polysaccharide) was studied using weight loss and potentiodynamic polarization measurements in the temperature range of 30-60 C. Starch inhibits the corrosion rates of mild steel to a considerable extent; the maximum inhibition efficiency (%IE) being 66.21% at 30 o C in presence of starch concentration of 200 ppm. The effect of the addition of very small concentration of sodium dodecyl sulfate and cetyl trimethyl ammonium bromide on the corrosion inhibition behavior of starch was also studied. The IE of starch significantly improved in presence of both the surfactants. The effect of surfactants on the corrosion inhibition behavior of starch appears to be synergistic in nature. Starch alone and in combination with surfactants is found to obey Langmuir adsorption isotherm from the fit of the experimental data of all concentration and temperature studied. Phenomenon of physical adsorption is proposed from the trend of IE with temperature and also the values E a , DG ads , and Q ads obtained

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Section: Introductionmentioning

confidence: 99%

Inhibition of mild steel corrosion in acidic medium using starch and surfactants additives

Mobin

Khan

Parveen

2011

J of Applied Polymer Sci

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“…Cassava starch was selected as precursor for the derivatives because cassava is a woody shrub that is extensively cultivated in tropical and subtropical regions 21 , but it has not been as widely commercialized as, for example, corn starch. It must be noticed that up to our knowledge, only few works have been published dealing with the use of starches as protective material against corrosion 11,29,30 . Sugama et al 11 employed a polyorganosiloxane-grafted potato starch and an unmodified potato starch as coating to afford protection of aluminum.…”

Section: Introductionmentioning

confidence: 99%

“…Sugama et al 11 employed a polyorganosiloxane-grafted potato starch and an unmodified potato starch as coating to afford protection of aluminum. On the other hand, Abd El Halemm et al 29 employed a soluble starch, among other compounds, to improve the pitting corrosion resistance of a carbon steel; nevertheless, these authors did not specify the starch they used and the type and amount of functional groups present in the starch. Other work that can be mentioned is the publication of Rosliza and Wan Nik 30 in 2009, who reported that cassava starch could improve the corrosion resistance of an aluminum alloy in seawater.…”

Section: Introductionmentioning

confidence: 99%

“…Other work that can be mentioned is the publication of Rosliza and Wan Nik 30 in 2009, who reported that cassava starch could improve the corrosion resistance of an aluminum alloy in seawater. It should be mentioned that in most of the works dealing with natural products as corrosion inhibitors, tests have been performed under acid conditions, and significantly less work has been published about the use of natural compounds in neutral-alkaline solutions 1,2,8,10,29 . More recently, we have reported that modified cassava starches exhibit corrosion inhibitive properties for carbon steel in a solution that simulates the chemical composition of tap water [31][32][33] .…”

Section: Introductionmentioning

confidence: 99%

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Modified cassava starches as potential corrosion inhibitors for sustainable development

et al. 2013

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Activated (AS) and carboxymethylated (CMS 0.24 ) cassava starch derivatives were studied as corrosion inhibitors for carbon steel XC35 in a 200 mgL -1 NaCl solution. They were characterized by back titration and Fourier Transform Infrared Spectroscopy (FTIR). Electrochemical techniques were used to evaluate the inhibitive properties of starches at room temperature and the chemical composition of the protective films was determined by X-Ray Photoelectron Spectroscopy (XPS). Electrochemical measurements revealed that AS acts as mixed inhibitor, whereas CMS 0.24 mainly inhibits the anodic reaction. In both cases, the protection increased with the inhibitor concentration; nevertheless, after 24 hours of immersion, the CMS 0.24 loses its properties, while AS molecules still maintains them. XPS analyses show that the inhibitive films are composed of an iron oxide/hydroxide mixture in which starch molecules are incorporated. Results were explained taking into consideration the hydrophilicity and the strength of the ionic interaction of the starches with the metal surface.

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“…Οι Abd El Haleem κ.αλ. [118] ερεύνησαν τη διάβρωση με βελονισμούς ενός κοινού χάλυβα με 1,05%κ.β. C, 0,32%κ.β.…”

Section: αρθρογραφική αναδρομή για τη διάβρωση κοινών χαλύβωνunclassified

Κραματωμένες Επικαλύψεις Με Τη Τεχνική Μεταφερόμενου Τόξου Πλάσματος

Darabara¹,

Δαραμπάρα²

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Περίληψη στα ελληνικά i Περίληψη στα αγγλικά (Summary) vΚεφάλαιο 1 o : Το άζωτο στους χάλυβες 1.1. Εισαγωγή 1.2. Διαλυτότητα αζώτου στο σίδηρο και το χάλυβα 1.2.1. Η επίδραση της μερικής πίεσης του αζώτου στη διαλυτότητα του στον τηγμένο σίδηρο σε συνθήκες ισορροπίας 1.2.2. Η επίδραση της θερμοκρασίας στη διαλυτότητα του αζώτου στο σίδηρο σε συνθήκες ισορροπίας 1.2.3. Η επίδραση των κραματικών στοιχείων στη διαλυτότητα του αζώτου 7.4.3. Σκληρότητα 7.4.4. Διάβρωση 7.4.4.1. Κυκλική Πολωτική Διάβρωση σε υδατικό διάλυμα 3,5%κ.β. NaCl 7.4.4.2. Κυκλική Πολωτική Διάβρωση σε υδατικό διάλυμα 1Ν H 2 SO 4 7.4.4.3. Χημική Διάβρωση σε υδατικό διάλυμα 6%κ

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Anodic behaviour and pitting corrosion of plain carbon steel in NaOH solutions containing Cl- ions

Cited by 5 publications

References 11 publications

Inhibition of mild steel corrosion in acidic medium using starch and surfactants additives

Inhibition of mild steel corrosion in acidic medium using starch and surfactants additives

Modified cassava starches as potential corrosion inhibitors for sustainable development

Κραματωμένες Επικαλύψεις Με Τη Τεχνική Μεταφερόμενου Τόξου Πλάσματος

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