Showing papers by "Belkheir Hammouti published in 2006"
TL;DR: In this paper, 4-MOX was used as a corrosion inhibitor for mild steel in sulfuric acid media and its efficiency attains more than 96.19% at 8 × 10 −4 4 ǫ at 333 K. The inhibition was assumed to occur via adsorption of the oxadiazole molecules on the metal surface.
403 citations
TL;DR: In this paper, the authors evaluated the corrosion inhibitor of steel in molar hydrochloric using weight loss measurements, electrochemical polarisation and EIS methods, and found that the inhibition efficiency was found to increase with oil content to attain 80% at 2.76 g/L.
223 citations
TL;DR: In this article, the use of the electrochemical impedance spectroscopy technique (EIS) in order to study the corrosion inhibition process of steel in 0.5 M H2SO4 solution at the open circuit potential (OCP) has been examined.
199 citations
TL;DR: In this paper, S-containing compounds newly synthesized have been tested as inhibitors for the corrosion of steel in 1-M HCl solution using weight loss measurements, potentiodynamic polarisation and impedance spectroscopy (EIS) methods.
190 citations
TL;DR: In this paper, the influence of 5-(2-chlorobenzyl)-6-methylpyridazine-3(2H)-thione (P1) and 5-(4-chloromethane-6-methyltetramer-3-2H-thione(P2) on the corrosion of steel in 0.5M H2SO4 solution has been studied using weight loss measurements at various temperature.
142 citations
TL;DR: A new organic compound was synthesised and tested as corrosion inhibitor of steel in phosphoric acid medium using gravimetric, electrochemical polarisation and electrochemical impedance spectroscopy (EIS) measurements as mentioned in this paper.
88 citations
TL;DR: Artemisia oil (Ar) is extracted from artemisia herba alba collected in Ain es-sefra-Algeria, and tested as corrosion inhibitor of steel in 2M H3PO4 using weight loss measurements, electrochemical polarisation and EIS methods.
86 citations
TL;DR: In this article, the effect of tetrazolic type organic compounds (1-phenyl-5-mercapto-1,2,3,4-tetrazole (PMT), 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 34, 35, 36, 38, 39, 40, 41, 41
62 citations
TL;DR: In this paper, the authors investigated the synergistic effect of iodide ions on the corrosion inhibition of steel in the presence of chalcone derivatives, and they found that the added iodide ion enhances the inhibition efficiency considerably.
59 citations
TL;DR: In this paper, two new corrosion inhibitors, namely 1-{2-[(2-hydroxyethyl)thio]ethylpyrrolidin-2-one (P5) and {[2-oxopyrrolide-1-yl)ethyl]thio-acetic acid (P4), were synthesized and tested as corrosion inhibitors for steel in 0.5 M H 2 SO 4.
47 citations
TL;DR: In this article, the effect of tetrazole compounds as corrosion inhibitors of copper in HNO3 at various temperatures was evaluated using both Gravimetric and electrochemical techniques and the results showed that tetrazoles were an excellent inhibitor for copper in acid.
Abstract: Purpose – To evaluate the effect of some tetrazole compounds as corrosion inhibitors of copper in HNO3 at various temperatures.Design/methodology/approach – 1‐phenyl‐5‐mercapto‐1,2,3,4‐tetrazole (PMT) was selected as the best inhibitor among the tetrazole compounds tested. Gravimetric and electrochemical techniques were conducted.Findings – PMT was an excellent inhibitor for copper in acid. Its efficiency attained 97.5 per cent and decreased slightly with temperature.Research limitations/implications – The inhibition efficiency increased with the concentration of PMT to reach 97.5 per cent at 10−3 M. Good agreement between the various methods explored was observed. Polarisation measurements also showed that PMT acted as a mixed inhibitor.Practical implications – The efficiency of PMT increased with the concentration but decreased with rise of temperature in the 298‐333 K range. As such, PMT could be used in chemical cleaning and pickling processes.Originality/value – The originality of this work was the f...
TL;DR: In this article, the effect of tripyrazole compounds on corrosion of pure iron in 1 M HCl solution has been studied using weight-loss measurements and various electrochemical techniques polarization and impedance spectroscopy methods.
TL;DR: In this paper, the effect of the heat treatment on the corrosion behavior of amorphous Fe85Cr5P6C3Si alloy in 0.5M H2SO4 has been investigated using electrochemical techniques.
01 Jan 2006
TL;DR: In this paper, the inhibitory effect of natural oil extracted from Eucalyptus (Euc) was estimated on the corrosion of steel in 1 molar hydrochloric acid using electrochemical polarisation and weight loss measurements.
Abstract: The inhibitory effect of natural oil extracted from Eucalyptus (Euc) was estimated on the corrosion of steel in 1 molar hydrochloric acid using electrochemical polarisation and weight loss measurements. The corrosion rate of steel is decreased in the presence of natural oil. The inhibition efficiency was found to increase with oil content to attain 72 at 3 mL/L. Euc oil acts as a cathodic inhibitor. The increase in temperature leads to an increase in the inhibition efficiency of the natural substance. The adsorption isotherm of natural product on the steel has been determined.
TL;DR: In this paper, the effect of oxo-anions on the corrosion and passivation of tin in a synthetic medium similar to industrial water has been studied by using electrochemical techniques.
TL;DR: The products of aza-type Michael addition, i.e., β-amino carbonyl compounds and their derivatives, are often used as peptide analogs or precursors of optically active amino acids, amino alcohols, diamines, and lactams.
Abstract: The products of aza-type Michael addition, i.e., β-amino carbonyl compounds and their derivatives, are often used as peptide analogs or precursors of optically active amino acids, amino alcohols, diamines, and lactams [1].[...]
TL;DR: The products of aza-type Michael addition, i.e., β-amino carbonyl compounds and their derivatives, are often used as peptide analogs or precursors of optically active amino acids, amino alcohols, diamines, and lactams.
Abstract: The products of aza-type Michael addition, i.e., β-amino carbonyl compounds and their derivatives, are often used as peptide analogs or precursors of optically active amino acids, amino alcohols, diamines, and lactams [1].[...]
TL;DR: The products of aza-type Michael addition, i.e., β-amino carbonyl compounds and their derivatives, are often used as peptide analogs or precursors of optically active amino acids, amino alcohols, diamines, and lactams.
Abstract: The products of aza-type Michael addition, i.e., β-amino carbonyl compounds and their derivatives, are often used as peptide analogs or precursors of optically active amino acids, amino alcohols, diamines, and lactams [1].[...]