Showing papers in "Corrosion Science in 2008"

TL;DR: In this paper, a review of quantum chemical methods for corrosion inhibitor studies is presented, with a concise summary of the most used quantum chemical parameters and methods and then summarizes the results of research articles in corrosion science over the past 20 years.

TL;DR: In this paper, the corrosion behavior of commercial magnesium/aluminium alloys (AZ31, AZ80 and AZ91D) was investigated by electrochemical and gravimetric tests in 3.5-wt. NaCl at 25-°C.

TL;DR: In this paper, the influence of microstructure, particularly the morphology of the β-phase, on the corrosion of Mg alloys has been studied using AZ91 as a model Mg alloy.

TL;DR: In this paper, the inhibitory action of leaves, seeds and a combination of leaves and seeds extracts of Phyllanthus amarus on mild steel corrosion in HCl and H 2 SO 4 solutions was studied using weight loss and gasometric techniques.

TL;DR: Mn and Mo were introduced in AISI 304 and 316 stainless steel composition to modify their pitting corrosion resistance in chloride-containing media Corrosion behaviour was investigated using gravimetric tests in 6 ¼wt% FeCl3, as well as potentiodynamic and potentiostatic polarization measurements in 35 ¾wt% NaCl Additionally, the mechanism of the corrosion attack developed on the material surface was analysed by scanning electron microscopy (SEM), X-ray mapping and energy dispersive Xray (EDX) analysis.

TL;DR: In this paper, the effect of three Schiff bases 2-Sulfanylphenylimino]methyl]phenol on mild steel in 15% HCl solution has been studied using weight loss measurements, polarization and electrochemical impedance spectroscopy (EIS) methods.

TL;DR: In this paper, the influence of pH and chloride ion concentration on the corrosion behavior of ZE41 was studied using immersion tests and electrochemical measurements, and it was shown that the fraction of film free surface increases with decreasing bulk pH and with increasing chloride ion concentrations.

TL;DR: In this article, the relationship between the molecular structure of Schiff base compounds and inhibition efficiency was investigated using the DFT method on three polydentate Schiff base compound (PSCs) used as corrosion inhibitors for iron in acid media.

TL;DR: Corrosion inhibition of mild steel in 2M HCl and 1M H 2 SO 4 by extracts of selected plants was investigated using a gasometric technique at temperatures of 30 and 60°C as mentioned in this paper.

TL;DR: In this paper, the potentiodynamic polarization and electrochemical impedance spectroscopy of the Al x CrFe 1.5 MnNi 0.5 alloys, obtained in H 2 SO 4 and NaCl solutions, clearly revealed that the corrosion resistance increases as the concentration of aluminium decreases.

TL;DR: In this paper, a modified ISO17081(2004) standard method is used to evaluate the hydrogen trapping by measuring the permeability (JssL) and apparent diffusivity (Dapp).

TL;DR: A model of passivity breakdown including the role of the intergranular boundaries of the barrier oxide layer on the redistribution of the potential at the metal/oxide/electrolyte interfaces in the passive state is presented in this paper.

TL;DR: In this paper, the adsorption behavior of the two imidazoline derivatives on Fe surface has been studied using molecular dynamics (MD) method and density functional theory, and the results indicated that the two derivatives could both adsorb on the Fe surface firmly through the IMD ring and heteroatoms, the two inhibitors both have excellent corrosion inhibition performance.

TL;DR: In this article, a systematic approach based on the application of Fourier transform infrared spectrophotometry (FTIR) was taken, in order to quantitatively analyze the corrosion products formed in the secondary cycle of pressurized water reactors (PWR).

TL;DR: In this article, the corrosion inhibition of mild steel in H2SO4 in the presence of gum arabic (GA) and polyethylene glycol (PEG) was studied using weight loss, hydrogen evolution and thermometric methods at 30-60 °C.

TL;DR: In this paper, the corrosion behavior of AA6061 aluminum alloy was found to be dependant on the pH and chloride concentration [NaCl] of solution, and an increase in the chloride concentration slightly shifted both the pitting E pit and corrosion E cor potentials to more active values.

TL;DR: In this article, the corrosion performance of WE43-T6 and AZ91D magnesium alloys with and without treatment by plasma electrolytic oxidation (PEO) was investigated by electrochemical measurements in 3.5-wt. NaCl solution.

TL;DR: In this paper, the processes of atmospheric corrosion of iron and steel and the properties of corrosion products (rusts) are modeled based on a quantitative evaluation of the chemical reactions pertaining to corrosion to elucidate the conditions with which corrosion-protective rust films form.

TL;DR: In this article, the performance of model zinc-magnesium alloys was studied to understand better the protective mechanism of magnesium in zinc, and the improved corrosion stability of ZnMg alloys were connected to the presence of an Mg-based film adjacent to the metal surface.

TL;DR: In this paper, the performance of polyaniline emeraldine salt and polypyrrole composite with carbon black as additives of an epoxy paint coating was investigated and the results indicated that this conducting polymer might works as both corrosion inhibitor and adhesion promoter.

TL;DR: In this paper, a new Ce, Zr and Nb-based conversion coating was designed for AZ91 and AM50 magnesium alloys and its chemical composition was characterized by X-ray photoelectron spectroscopy (XPS).

TL;DR: In this paper, the corrosion inhibition effect of 4-{[(1Z)-(2-chloroquinolin-3-yl)methylene]amino} phenol (CAP), N -[1Z]-( 2-chlorosinoline-methylene]- N -(4-methoxyphenyl)amine (CMPA) and N-[1E]-(2 -chloroencinnol-3yl) methylene]-N -nitrophenylamine (CNPA) compounds on mild steel in 1.0

TL;DR: In this paper, the corrosion inhibition effect of 3H-phenothiazin-3-one, 7-dimethylamin as a new inhibitor was studied using different electrochemical and weight loss methods.

TL;DR: In this article, the structure and formation mechanism of the coating was investigated in details using ESEM/EDX, XRD, EPMA, ICP and electrochemical method.

TL;DR: In this article, an electrochemical evolution of the interface formed by carbon steel exposed to artificial seawater with nutrients in the presence and absence of mixed cultures that contain sulfate-reducing bacteria (SRB) is characterized by electrochemical impedance spectroscopy (EIS).

TL;DR: In this paper, the influence of Mn and Mo additions on corrosion resistance of AISI 304 and 316 stainless steels in 30.5% H2SO4 at 25 and 50°C.

TL;DR: In this paper, the corrosion inhibition of iron in HCl, HClO4, H2SO4 and H3PO4 solutions by cefatrexyl has been studied by polarization resistance (Rp) and electrochemical impedance spectroscopy (EIS) at the corrosion potential.

TL;DR: Quinolin-5-ylmethylene-3-{[8-(trifluoromethyl)quinolin-4-yl]thio}propanohydrazide (QMQTPH) was synthesized, characterized and tested as a corrosion inhibitor for mild steel in 1/M and 2/M HCl solution using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) as mentioned in this paper.

TL;DR: In this article, the corrosion properties of lead free solders were investigated in 3.5-wt.% NaCl solution through potentiodynamic polarisation, and it was shown that lead-free solders had better corrosion resistance than Sn-Pb solders.

TL;DR: In this article, the formation of protective layers on copper, zinc and copper-zinc (Cu-10Zn and Cu-40Zn) alloys at open circuit potential in aerated, near neutral 0.5 M NaCl solution containing benzotriazole was studied using electrochemical impedance spectroscopy (EIS).