Results 241 to 250 of about 134,803 (296)

The passivation of aluminium in lithium carbonate/bicarbonate solutions

Corrosion Science, 1992
Abstract The anodic dissolution and passivation of pure aluminium in aqueous lithium carbonate/bicarbonate solutions has been researched using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Sweep rate studies revealed a wide anodic peak and the total absence of a reverse peak.
C.M. Rangel, M.A. Travassos
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The electrochemical behaviour of cobalt in carbonate-bicarbonate solutions

Corrosion Science, 1989
Abstract The dissolution and passivation of polycrystalline cobalt electrodes in carbonate-bicarbonate solutions were studied at 25°C. The influence of the CO 3 2− /HCO 3 − concentration ratio and hydrodynamics on the electrodissolution of the base metal, on the formation of both the prepassivating and passivating surface layers and on the ...
C.A. Gervasi, S.R. Biaggio, J.R. Vilche, A.J. Arvia   +3 more
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Water structure and its influence on the flotation of carbonate and bicarbonate salts

Journal of Colloid and Interface Science, 2007
Interfacial water structure is a most important parameter that influences the collector adsorption by salt minerals such as borax, potash and trona. According to previous studies, salts can be classified as water structure makers and water structure ...
Orhan Özdemir, Jan D Miller
exaly   +3 more sources

ChemInform Abstract: The Passivation of Aluminum in Lithium Carbonate/Bicarbonate Solutions.

ChemInform, 1992
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
C. M. RANGEL, M. A. TRAVASSOS
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ChemInform Abstract: Electrochemical Behavior of Cobalt in Carbonate‐Bicarbonate Solutions.

ChemInform, 1989
AbstractThe anodic oxidation of Co in CO32‐/HCO3‐ solutions of pH 8.4‐10.5 in the potential range of the active‐to‐passive transition strongly depends on hydrodynamic conditions and ionic composition of the solution.
C. A. GERVASI, S. R. BIAGGIO, J. R. VILCHE, A. J. ARVIA   +3 more
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Anodic oxide films on tin in carbonate–bicarbonate buffer solution

Corrosion Science, 2005
Abstract Steady-state polarisation curves, voltammetric electroreductions and impedance data were used to analyse passive films anodically formed on tin in carbonate–bicarbonate buffer solution of pH 8.9. Over the potential range −0.1 V/1.2 V (SCE), tin exhibits an essentially potential independent steady-state passive current, which is also ...
C.A. Gervasi, P.E. Alvarez
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SCC initiation for X65 pipeline steel in the “high” pH carbonate/bicarbonate solution

Corrosion Science, 2003
The initiation of stress corrosion cracking (SCC) was studied using scanning electron microscope observations of linearly increasing stress test specimens. SCC initiation from the following surfaces was studied: (i) initiation from the commercial pipe surface covered by the Zn coating, (ii) initiation from a mechanically polished surface with a ...
Wang, J. Q., Atrens, A.
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Study of iron electrodissolution in carbonate/bicarbonate solutions by electrochemical impedance spectroscopy

Journal of Electroanalytical Chemistry, 1992
Abstract The iron electrodissolution reaction in carbonate/bicarbonate solutions covering a wide range of electrolyte compositions was investigated by electrochemical impedance spectroscopy. Impedance diagrams and stationary polarization curves obtained with rotating iron disc electrodes at different rotation speeds were interpreted in terms of a ...
E.B. Castro, J.R. Vilche
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Titration of carbonate‐bicarbonate leach solutions

Journal of Applied Chemistry, 1962
AbstractThe acidimetric titration as generally used in analysis of carbonate/bicarbonate was found to be inaccurate whenever the concentration ratio of carbonate to bicarbonate was very different from unity.The pH at the equivalent point for the carbonate varied over the range 7.8–9.1 as a function of the initial concentrations.These facts limit the ...
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Anodic Hydrogenation of Iron in a Carbonate–Bicarbonate Solution

Materials Science, 2001
For the first time, we established a phenomenon of anodic hydrogenation of 1010 steel in a deaerated 1 N NaHCO3 + 1 N Na2CO3 solution at a temperature of 325 ± 0.1 K. Hydrogen was absorbed by the metal surface at anodic potentials of −430 mV and lower, which coincides with the range of thermodynamic stability of FeCO3 and H2O.
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