Showing papers in "Corrosion Science in 2003"

TL;DR: In this paper, the effect of benzimidazole derivatives on mild steel corrosion in 1 M HCl at five different temperatures has been studied and the inhibiting efficiency and apparent activation energy have been calculated in the presence and in the absence of the organic inhibitors.

TL;DR: In this article, the equivalent circuits for electrochemical impedance spectroscopy (EIS) modelling of PVD coated steels in 0.5 N NaCl solution were established and the circuit parameters obtained are correlated with the dielectric characteristics, and microstructure of steels and PVD hard coatings.

TL;DR: In this paper, it was found that the mucilage extracted from the modified stems of prickly pears, toward acid corrosion of aluminum, is tested using weight loss, thermometry, hydrogen evolution and polarization techniques.

TL;DR: In this paper, the critical pitting potential is a linear function of the logarithm of the chloride concentration (at constant pH), in agreement with experiment, and the model also predicts that the critical pit potential is independent of pH.

TL;DR: In this article, a systematic study of PVD ceramic (TiN and CrN) coated mild steel and AISI 316L stainless steel was carried out using the Electrochemical impedance spectroscopy (EIS) technique as the coated systems were immersed in 0.5 N NaCl solution.

TL;DR: In this article, the corrosion protection of AA 2024-T3 by films of bis-[3-(triethoxysilyl)propyl]tetrasulfide (bis-sulfur silane) was studied in a neutral 0.6 M NaCl solution using potential transient, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques.

TL;DR: The isothermal oxidation behavior of bulk Ti3AlC2 has been investigated at 1000-1400 °C in air for exposure times up to 20 h by means of TGA, XRD, SEM and EDS as discussed by the authors.

TL;DR: In this article, all the new isoxazolidines were tested for corrosion inhibition of mild steel in 1 M HCl at 60 °C by gravimetric and electrochemical methods.

TL;DR: In this paper, multilayered polyaniline (Pani) and polypyrrole (Ppy) copolymers were galvanostatically deposited on both carbon steel and stainless steel.

TL;DR: In this paper, the corrosion inhibition of neutral red on the corrosion of cold rolled steel in 1.0 M hydrochloric acid (HCl) was studied using weight loss method and potentiodynamic polarization method.

TL;DR: In this paper, four surfactants, cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate, sodium oleate and polyoxyethylene sorbitan monooleate (TWEEN-80), were investigated in aerated 0.5 mol dm(-3) H2SO4 solutions, by means of electrochemical impedance spectroscopy.

TL;DR: In this paper, different constituents of an AZ91 alloy (α,β, and MnAl phases) were synthesized and their corrosion resistance was studied by electrochemistry in ASTM D1384 water, pH 8.3.

TL;DR: In this paper, in-depth distribution of rusts on two weathering steels and a plain carbon steel exposed to atmosphere for 17 years under a bridge at a coastal + industrial region in Japan were studied.

TL;DR: In this article, the polyaniline (PANI) coatings were electrosynthesised on steel samples (13% and 4.44% Cr) using sulphuric and phosphoric acids as supporting electrolytes.

TL;DR: In this article, the inhibition effects of sodium dodecylbenzenesulphonate (SDBS) and hexamethylenetetramine (HA) on the corrosion of mild steel in sulphuric acid solution have been studied using weight loss, electrochemical impedance and Tafel polarisation measurements.

TL;DR: In this article, the authors examined the crystallization of amorphous anodic films grown at constant current density on sputtering-deposited titanium and Ti-Si alloys, in ammonium pentaborate electrolyte, by transmission electron microscopy.

TL;DR: In this article, the main part of this paper focuses on the more complex models suggested to account for experimental observations of the oxidation kinetics and the oxide morphology below 1000 °C.

TL;DR: In this article, the corrosion of 2024-T3 aluminum alloy was studied using scanning electron microscopy and energy-dispersive X-ray spectroscopy, and the results showed that the anodic S phase (Al2CuMg) particles dealloyed Al and Mg during the 3.5 h of immersion in a neutral 0.6 M sodium chloride (NaCl) solution.

TL;DR: The crystal structure of Akaganeite and the transition to hematite has been studied by means of conventional and synchrotron X-ray and neutron powder diffraction as discussed by the authors.

TL;DR: In this article, the pyridazine compounds of corrosion of pure iron in 1 M HCl solution have been studied using weight loss measurements, polarisation and impedance spectroscopy methods.

TL;DR: In this article, the inhibitive effects of chromate and molybdate on pitting corrosion in stainless steel AISI 304 and 316 were studied in acidified chloride solution and the results showed that these known inhibitors affect both the nucleation of pitting and metastable pitting by reducing the numbers and sizes of these events.

TL;DR: In this article, a two-step method was used for electrodepositing sol-gel films, in which the monomer is first hydrolyzed in acidic solution and only then the negative potential is applied, which consumes protons and releases hydroxyl ions, thus enhancing the condensation.

TL;DR: In this paper, it is argued that diffusion control cannot apply from first immersion and that this provides considerably greater freedom to mathematical modelling, allowing for nonuniform corrosion product density and permeability and for loss of corrosion product.

TL;DR: In this paper, the Ni-SiC composite coatings showed a better corrosion resistance in a 0.6 M NaCl solution than nickel electrodeposited under the same conditions.

TL;DR: In this article, the galvanic coupling between intermetallics and matrix is investigated by means of scanning electron microscopy and scanning Kelvin probe force microscopy in solution heat treatment.

TL;DR: In this article, an electrophoretic deposition at various deposition potentials from 30 to 90 V using the stoichiometric HAP (Ca/P ratio 1.67) powder in a suspension of isopropyl alcohol was developed on type 316L stainless steel.

TL;DR: In this paper, the pitting corrosion resistance of a new family of duplex stainless steels has been evaluated and an exponential equation is obtained in the regression analysis between the PPP potential and chemical composition.

TL;DR: In this article, the effect of varying surface roughness was investigated using potentiostatic and potentiodynamic CPT measurements on 904L stainless steel in 1 M NaCl, and the results demonstrated that increasing the smoothness of the sample surface causes an increase in the critical pitting temperature, even though the CPT exhibits a markedly more deterministic character than does the pitting potential.

TL;DR: In this article, Raman spectroscopy, scanning electron microscopy and elemental X-ray mappings (Fe, S, O) were used to analyze steel sheet piles immersed 1 m above the mud line for 25 years.

TL;DR: In this article, Triphenylmethane derivatives, namely fuchsin basic (FB) and Fuchsin acid (FA), were studied for their possible use as copper corrosion inhibitors in 0.001 to 1.0 M sulphuric acid solutions.