Showing papers in "Corrosion Science in 1999"

TL;DR: In this paper, a review describes the experiments performed during the last few decades which enhance knowledge of the pitting of aluminum, specifically, metastable and stable pits, pit chemistry and the effect of intermetallics on pitting.

TL;DR: In this article, a new corrosion inhibitor, namely, 3,5-bis (2-thienyl)-4-amino-1,2,4-triazoles (TAT), has been synthesized and its inhibiting action on the corrosion of mild steel in acid baths (1 M HCl and 0.5 M H2SO4) has been investigated by various corrosion monitoring techniques, such as corrosion weight loss tests and electrochemical impedance spectroscopy.

TL;DR: In this article, the authors used X-ray photoelectron spectroscopy (XPS) to identify potentially passive films on specimens exposed to carbon dioxide (CO2) corrosion.

TL;DR: In this article, the adsorption and corrosion inhibition of anion surfactants such as Dodecyl Sulphonic Acid Sodium Salt (DSASS), DBSASS, and Sodium Sulfate (SDS) on the aluminium surface in hydrochloric acid solution was studied using the weight loss method.

TL;DR: In this paper, the effects of dissolved carbon dioxide on the electrochemical reactions of two pipeline steels: a low alloy steel and a 13% Cr stainless steel were investigated, and the role of pH buffer and electrolytic anion was discussed, and it was shown that at high cathodic overpotentials the carbon component of the dissolved CO2 is reduced, probably to carbon monoxide, and this reduces the rate of hydrogen evolution by cathode poisoning.

TL;DR: In this paper, the corrosion inhibition of Al and its widely used alloys, Al-6061 and Al-Cu, was studied in neutral solutions using sulphates, molybdates and dichromates as passivators.

TL;DR: In this paper, the atmospheric corrosion of different steels at different exposure conditions has been investigated by Mossbauer and Raman spectroscopies and XRD, and Goethite and lepidocrocite were identified in the corrosion products formed on all the coupons.

TL;DR: In this article, a systematic investigation of the influence of nitrogen alloying on the pitting corrosion of austenitic stainless steels was performed and the results indicated a synergistic interaction between the two alloying elements.

TL;DR: In this article, the influence of s-phase on the behavior of duplex stainless steels was evaluated using two tests: double loop electrochemical potentiodynamic reactivation (DLEPR) and slow strain rate test.

TL;DR: In this paper, the ability of quantum chemistry to select corrosion inhibitors, quantum chemical calculations have been applied to the six kinds of Schiff base, and the corresponding structures have been optimized and the energies and coefficients of their molecular orbitals have been calculated using the semi-empirical MINDO/3 method.

TL;DR: In this article, the effect of Schiff bases on the corrosion of copper inhydrocholoric has been studied and it was shown that the Schiff base of V-pph-V at aconcentration of 10−3 mol⧸dm3 can give 99.4% inhibition at 20°C.

TL;DR: In this article, the electron configuration of several imidazoline inhibitors by the quantum chemical calculation and to seek correlation between molecular structure and behavior of corrosion inhibition was provided. And the electron donor group introduced, particularly, the substituent group with conjugated system, to the iminazoline ring will improve corrosion inhibition efficiency.

TL;DR: In this paper, the corrosion and inhibition behaviors of mild steel in aerated sulphuric acid in the presence of propargyl alcohol (PA) and potassium iodide (KI) were investigated using electrochemical methods.

TL;DR: In this paper, it was shown that the influence of Mo on the film capacitance can be related to a decrease of the number of donors in the iron oxide layers of the film, and the presence of Mo also affects the defect structure of the inner chromium oxide region.

TL;DR: In this article, it was shown that with continued anodizing, the essentially alumina film detaches from the alloy surface, which is followed by growth of new film on the exposed substrate.

TL;DR: In this paper, the corrosion-dissolution characteristics of pure aluminium were studied in a 4 M NaOH electrolyte by steady state techniques and voltammetric analysis, and it was shown that aluminium exhibits a passive state at both 25°C and 60°C.

TL;DR: In this article, the corrosion inhibition of copper in aerated 0.5 m H2SO4 solution in presence of two classes of heterocyclic compounds, namely phenylazo-pyrazolones (PAP) or hydroxy quinoline and bromobenzyl-carboxy-1,2,3 triazole (BCT) derivatives was studied.

TL;DR: In this paper, the effects of the anions Cl−, NO− 3 and SO2− 4 on the anodic dissolution of pure aluminum have been investigated by using potentiodynamic polarization experiments.

TL;DR: In this paper, a monolayer of 11-mercapto-1-undecanol HO(CH2)11SH(MUO) adsorbed on the electrolytically reduced iron surface was modified withtetraethoxysilane (C2H5O)4Si(TES), octyltriethoxylsilane 8H17Si(OC 2H5)3 and polyethylene (PE) C18H37Si (OC2H53(C18TES) for preparing one-and

TL;DR: In this paper, the inhibitive action of MAOS (metacryloxypropylmethoxysilane) used for silanising pre-treatment on aluminium corrosion in NaCl aqueous 3.5% solutions has been examined.

TL;DR: In this paper, the dissolution of Alloy 2.5, Alloy 3.3, Alloy 4.4, Alloy 5.1, Alloy 6.5 and Alloy 7.1 alloys in alkaline solution has been studied, with particular emphasis on the roles of various second phase material on the corrosion rate of the alloy and resultant surface morphology.

TL;DR: In this article, the corrosion behavior of Fe−25Mn−5Al alloy in different aqueous solutions of pH −0.8 to 15.3 was investigated by electrochemical measurements and AES/XPS analysis.

TL;DR: In this article, a generalized model of the transpassivity of Fe-Cr alloys is proposed, where the model represents the anodic film as a highly doped n-type semiconductor-insulator-p type semiconductor (n-i-p) structure.

TL;DR: In this paper, a model to explain the metastability of high-chromium duplex stainless steels was proposed and the transition from metastable to stable pitting was investigated.

TL;DR: In this article, the effects of differences in grain structure on the exfoliation corrosion of 2014 T651 and 2024 T351 plate were described and the severity of both types of corrosion was related to the grain aspect ratio of the material, with the most advanced attack occurring on the midsection of the plate and ranked in the order T/2>T/4>Surface.

TL;DR: In this article, a neural network was used to predict the atmospheric corrosion of steel and zinc, and the cross validity criterion was employed as the criterion to stop the training of the neural network.

TL;DR: In this paper, the corrosion behavior of copper in the presence of two organic inhibitors that belong to the oxime group (salycilaldoxime (SO) and benzoinoxime(BO)) has been investigated in neutral aqueous NaCl solutions.

TL;DR: In this paper, the atomospheric corrosion of carbon steel under different Cuban atmospheric conditions was evaluated and a model that represents the relation between the corrosion of steel and the environmental parameters is proposed.

TL;DR: In this paper, 1,2,3-Benzotriazole (BTAH) and some of its 5-alkyl-derivatives (methyl-, butyl-, hexyl-, octyl-, dodecyl-) were tested by using different electrochemical techniques in order to investigate the influence exerted by the aliphatic chain length on the inhibiting action of the base molecule towards OFHC copper corrosion in acidic sulphate and saline solutions.

TL;DR: In this article, the authors investigated the behavior of free corrosion of three types of alloys, i.e., Cu/Zn/Ni, Ni/Ni and Ni/Cu, in synthetic sweat medium by means of surface analyses.