The inhibition of the corrosion of Armco iron in HCl solutions in the presence of surfactants of the type of N-alkyl quaternary ammonium salts

Brânzoi, Viorel; Brânzoi, Florina; Baibarac, M.

doi:10.1016/s0254-0584(00)00260-1

Cited by 145 publications

(57 citation statements)

References 16 publications

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“…It is also noted that, the high value of K ads for inhibitor S I indicates stronger adsorption on the mild steel surface than the other inhibitors. Large values of K ads imply more efficient adsorption hence better inhibition efficiency [36]. It is seen that the values of K ads was increased in the following order: S I > S II > S V > S III > S IV .…”

Section: Adsorption Isotherm and Thermodynamic Parameters For The Cormentioning

confidence: 87%

Enhanced corrosion inhibition of mild steel in CO2-saturated solutions containing some novel green surfactants based on cottonseed oil

Ismayilov¹,

El‐Lateef²,

Abbasov³

et al. 2015

Int. J. Corros. Scale Inhib.

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Some novel green surfactants based on cottonseed oil were synthesized and tested as inhibitors for the corrosion of mild steel in CO 2 -saturated 1% NaCl solution by potentiodynamic polarization and linear polarization resistance corrosion rate measurements at 50°C. Their critical micelle concentrations at equilibrium in water at 25°C were also determined. Inhibition efficiency increased with increase in the concentration of the studied surfactants, reached the maximum (99.34%) at 100 ppm. The Tafel polarization results indicate that the inhibitors act as mixed inhibitors. The adsorption of the inhibitors on the steel surface obeys Langmuir isotherms. The thermodynamic parameters of adsorption revealed a strong interaction between the inhibitors and the corroding mild steel surface.

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Section: Adsorption Isotherm and Thermodynamic Parameters For The Cormentioning

confidence: 87%

Enhanced corrosion inhibition of mild steel in CO2-saturated solutions containing some novel green surfactants based on cottonseed oil

Ismayilov¹,

El‐Lateef²,

Abbasov³

et al. 2015

Int. J. Corros. Scale Inhib.

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“…Asidik ortamda ve asidik ortama farklı derişimlerde TAE içeren ortamlarda yumuşak çelik elektrodun korozyon reaksiyonu sonucu zamanla oluşan H 2 gazının hacimleri Tablo 4 ile Şekil 4'de verilmiştir. Ortalama yüzey kaplama kesirlerinden çizilen grafikler için saptanan en yüksek R 2 değeri, Langmuir adsorpsiyon izotermi ile elde edildiği için inhibitörün, yumuşak çelik yüzeyine adsorpsiyonunun, Langmuir adsorpsiyon izotermine uyduğuna karar verilmiştir [32,33].…”

Section: Deney Sonuçlarının Değerlendirilmesiunclassified

Asidik Ortamda Yumuşak Çeliğin Korozyonu Üzerine Melia Azedarach Özütünün İnhibitör Davranışı

Şeker

Gürten²

2015

El-Cezeri Fen Ve Mühendislik Dergisi

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HCl çözeltisi içerisinde yumuşak çeliğin korozyon davranışı üzerine etkisi çevreyle dost Melia Azedarach (TAE) özütü, potansiyodinamik polarizasyon, lineer polarizasyon direnci, elektrokimyasal impedans spektroskopisi (EIS), taramalı elektron ve atomik güç mikroskobisi yöntemleri kullanılarak araştırılmıştır. Deneysel sonuçlar, TAE özütünün iyi bir korozyon inhibitörü olduğunu ve inhibisyon etkinliğinin TAE derişiminin artmasıyla arttığınını göstermektedir. EIS sonuçlarına göre, TAE derişiminin artmasıyla polarizasyon direnci değerleri artmakta sabit faz elementi değeri azalmaktadır. Polarizasyon eğrileri, TAE'nın karma tip inhibitör olduğunu göstermektedir. Taramalı elektron ve atomik güç mikroskopi çalışmaları yumuşak çelik yüzeyinde koruyucu filmin oluştuğunu doğrulamaktadır. Metal yüzeyine adsorplanan inhibitör Langmuir adsopsiyon izotermine uymuş ve adsorpsiyon standart serbest entalpi (G°a ds ) değerleri de hesaplanmıştır. Anahtar kelimeler: Asit korozyon inhibitörü; elektrokimyasal impedans spektroskopisi; tesbih ağcı özütü; taramalı elektron mikroskobu; atomik kuvvet mikroskobu Inhibitor Action of Melia Azedarach Extract on the Corrosion of Mild Steel in Acidic MediumAbstract: Melia Azedarach (TAE) extract was investigated as eco-friendly corrosion inhibitors of mild steel in 1.0 M HCl using potentiodynamic polarization, linear polarization resistance, electrochemical impedance spectroscopy (EIS), scanning electron microscopy and atomic force microscopy techniques. The experimental results show that TAE is good corrosion inhibitor and the inhibition efficiency is increased with TAE extract concentrations. The results of AC impedance have shown that polarization resistance increased and constant phase element decreased with increasing TAE concentrations. Polarization curves indicated that TAE is mixed inhibitor. Scanning electron and atomic force microscopy studies confirmed the formation of a protective film on the mild steel surface. The inhibitor adsorbed on the iron surface was found to be in a good agreement with the Langmuir adsorption isotherm and the value of adsorption free energy of (G°a ds ) was also calculated.

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“…Organic compounds have long been known to inhibit the corrosion of mild steel in acidic media. Compounds previously studied as inhibitors include triazole derivatives [2][3][4][5] , bipyrazolic derivatives 6 , surfactants 7,8 , aromatic hydrazides 9 , organic dyes 10,11 , poly (4-vinylpyridine) 12 and thiosemicarbazide-type organic compounds 13,14 . These compounds can adsorb on to the mild steel surface and block active sites, thus decreasing the corrosion rate.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Inhibition of Mild Steel by 4-Allyl-5-pyridin-4-yl-4H-1,2,4-triazole-3-thiol

Orhan¹,

Ercan²,

Koparır³

et al. 2012

Chem Sci Trans

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4-Allyl-5-pyridin-4-yl-4H-1,2,4-triazole-3-thiol has been synthesized and characterized by IR, 1 H NMR, 13 C NMR analysis. The corrosion protection of mild steel in a 0.1 M H 2 SO 4 solution by 4-allyl-5-pyridin-4-yl-4H-1,2,4-triazole-3-thiol was studied by electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). Results showed that 4-allyl-5-pyridin-4-yl-4H-1,2,4-triazole-3-thiol inhibited mild steel corrosion in a 0.1 M H 2 SO 4 solution and indicated that the inhibition efficiencies increased with the concentration of inhibitor. Changes in impedance parameters suggested the adsorption of 4-allyl-5-pyridin-4-yl-4H-1,2,4-triazole-3-thiol on the mild steel surface, leading to the formation of protective films.

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The inhibition of the corrosion of Armco iron in HCl solutions in the presence of surfactants of the type of N-alkyl quaternary ammonium salts

Cited by 145 publications

References 16 publications

Enhanced corrosion inhibition of mild steel in CO2-saturated solutions containing some novel green surfactants based on cottonseed oil

Enhanced corrosion inhibition of mild steel in CO2-saturated solutions containing some novel green surfactants based on cottonseed oil

Asidik Ortamda Yumuşak Çeliğin Korozyonu Üzerine Melia Azedarach Özütünün İnhibitör Davranışı

Corrosion Inhibition of Mild Steel by 4-Allyl-5-pyridin-4-yl-4H-1,2,4-triazole-3-thiol

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