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Showing 1 to 17 of 17 for “"Anodic dissolution"”.
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Anodic dissolution and electropolishing of copper in phosphoric acid
… phenomena associated with the electrochemical dissolution of Cu in phosphoric acid. The investigation employs not only standard electrochemical methods, but also the purely physical methods of microscopy and schlieren analysis.
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The anodic dissolution of covellite in acidic, chloride solutions
… at ambient conditions to investigate the dissolution behaviour of the mineral over a surface potential range from the open circuit potential (OCP) to about 0.62 V (vs. SHE). The electrode was mounted in an apparatus, which was designed to resemble leaching of the mineral under conditions …
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Anodic dissolution of zinc in potassium iodide-potassium iodate solutions
"The anodic dissolution of Zn was studied in KI-KIO₃ solutions at 25ºC. In I⁻ solutions, it was found that the apparent valence of Zn ions going into solution is approximately two. Smaller values are obtained in IO₃⁻ solutions, with the most pronounced changes occurring in the higher …
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Anodic Metal Dissolution In Haloaluminate Molten Salts/Ionic Liquids
… a mass transport-limited process governed by the dissolution of a passive layer of alcl3(s) and/or albr3(s) on the electrode surface. In alcl3-etmeimcl, the passive current density scales linearly with the concentration of alcl4- in the ionic liquid. The heterogeneous rate constant, referenced to …
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The anodic behavior of zinc in aqueous salt solutions
… recent years.</p> <p>The basic mechanism of the anodic dissolution of metals such as zinc, cadmium, and magnesium in salt solution is not completely known. Many mechanisms have been proposed by different investigators but evidence is still lacking which would allow one to draw reliable …
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Chemical and electrochemical studies of Borane Anions and Metallaboranes
… of some of these anions have been prepared by anodic dissolution of a suitable metal in a solution of the anion. The structures and dynamics of substituted derivatives of the [B₉H₁₄]⁻ ion have been studied. The anions [B₉H₁₃(X)⁻(X = CINCSe, NCBPh₃, NCBH₂NCBH₃, NCBH₂CN, NCBH₂CNB₉H₁₃, CN, and …
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Some aspects of crack initiation in mild steel subjected to fatigue stressing in a corrosive environment
… of both static and compressive stresses enhance anodic dissolution. Application of cyclic stress assists the breakdown of the surface film resulting in localised attack, Metallographic studies indicate that a sulphur enriched band of ferrite exists around the non-metallic inclusions and corrosion …
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A rotating ring-disk study of interactions among SPS, cuprous ions, and oxygen
… while Cu (I) was generated at the disk by anodic dissolution of copper. Because Cu (I) is consumed by reaction with oxygen, the experiments were carried out under air, oxygen, or argon atmospheres.</p><p>When SPS is present in the solution, a sudden kinetic acceleration is observed at the …
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Estudo do mecanismo de corrosão pelo CO2 em aço carbono via técnicas eletroquímicas em condições que incluem alta pressão e temperatura
… steels. In this context, the role of CO2 in the anodic dissolution mechanism of carbon steel was investigated through measurements of electrochemical impedance, local pH and mass loss tests. Tests under high partial pressure of CO2were carried out in order to increase the dissolved …
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Effect of aqueous environments on the fatigue behavior of 90-10 copper nickel
… nickel were conducted in 3.5% NaCl solutions. Anodic or cathodic currents were applied during testing. Anodic currents decreased and cathodic currents increased the fatigue life. Both anodic and cathodic currents changed the fracture mode from predominantly transgranular to intergranular. …
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Electrically Polarised Electrodes in DMSO and DMF electrolytes of Pseudohalide Salts: In situ IR studies supported by EXAFS/XANES and other techniques
… spectroscopic (SNIFTIRS) investigations of anodically polarised nickel, copper and gold electrodes in pseudohalide-containing (i.e. NCO⁻, NCS⁻, NCSe⁻, CN⁻ and TeCN⁻) dimethyl formamide (DMF) and dimethyl sulfoxide (DMSO) solutions, with a supporting electrolyte, tetrabutylammonium …
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Stress corrosion cracking and corrosion of carbon steel in simulated fuel-grade ethanol
… and act as crack initiation sites. Secondly, the anodic behavior of carbon steel electrode was investigated in detail under different ethanol chemistry conditions. General corrosion and pitting susceptibility under unstressed condition were found to be sensitive to the ethanol chemistry. Low …
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The study of aluminium anodes for high power density AL-air batteries with brine electrolytes
… (~ 0.1 wt %) and gallium (~ 0.05 wt %) dissolve anodically at high rates in brine media; at room temperature, current densities > 0.2 A cm-2 can be obtained at potentials close to the open circuit potential, ~ -1.5 V vs SCE. Alloys without both tin and gallium do not dissolve at such a negative …
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Computational and adsorption investigation of some quinoxaline derivatives on selected metals in acidic media
… that the inhibitor molecules reduced the anodic dissolution of mild steel, zinc, and aluminium and also suppressed the hydrogen evolution reaction. The obtained potentiodynamic polarization parameters revealed that all three inhibitors studied acted as mixed-type inhibitors, that is, …
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Influence of the heat treatment procedure on the stress corrosion cracking behaviour of low pressure turbine blade material FV566
… observed was intergranular SCC (IGSCC) by anodic dissolution for the 550°C, 560°C, 570°C, 580°C, 590°C, 600°C and 620°C specimens. The material's resistance to SCC improved with increasing tempering temperature. Specimens tempered at 480°C and 550°C were most susceptible to SCC, while …
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Effect of water on copper electrodeposition from water-containing deep eutectic solvents
… of the anode reaction. Therefore, the anodic reaction occurring at the soluble copper anode during the electrodeposition of Cu from the water-containing electrolytes was also studied.;The diffusion limiting currents for Cu (II) reduction from ethaline were found to increase three times …