Results 211 to 220 of about 24,877 (251)
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High-rate electrochemical dissolution of Ni–Cu alloys in nitrate electrolyte
Journal of Applied Electrochemistry, 2002High-rate anodic dissolution of nickel, copper, and two alloys Ni30Cu70 and Ni65Cu32 in NaNO3 solution was studied, using a flow-channel electrochemical cell. In all experiments, the initial interelectrode distance was 208 μm and the electrolyte velocity was 15 m s−1.
W. Hoogsteen +3 more
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Journal of the American Chemical Society, 2022
From atomic force microscopy (AFM) experiments, we report a new phenomenon in which the dissolution rate of fused silica is enhanced by more than 5 orders of magnitude by simply pressing a second, dissimilar surface against it and oscillating the contact pressure at low kHz frequencies in deionized water.
Kilian Shani Fraysse +6 more
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From atomic force microscopy (AFM) experiments, we report a new phenomenon in which the dissolution rate of fused silica is enhanced by more than 5 orders of magnitude by simply pressing a second, dissimilar surface against it and oscillating the contact pressure at low kHz frequencies in deionized water.
Kilian Shani Fraysse +6 more
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Electrochemical machining: The role of steel microstructure in high-rate anodic dissolution
JOM, 2002Electrochemical machining (ECM) of metals, particularly steels, plays an important role in many industrial microsystem technologies. This paper presents an overview of investigations into the anodic metal dissolution at high current densities of the technically important carbon steel 100Cr6 in aqueous NaCl- and NaNO3-electrolytes.
Haisch, T., Mittemeijer, E.
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Advanced Materials Research, 2010
Recently, material removal utilising electrokinetic phenomenon was proposed as an alternative to create material removal at the nanometric level [1]. The concept of the introduced material removal process is to impinge particles contained in the slurry, under the influence of hydrodynamic and electrokinetic effects, onto the workpiece with a ...
C.S. Leo +3 more
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Recently, material removal utilising electrokinetic phenomenon was proposed as an alternative to create material removal at the nanometric level [1]. The concept of the introduced material removal process is to impinge particles contained in the slurry, under the influence of hydrodynamic and electrokinetic effects, onto the workpiece with a ...
C.S. Leo +3 more
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Surface Technology, 1977
Abstract The nature of factors that determine the electrochemical activities of metals for the M z + + z e - ⇌ M reaction have been investigated. High activities of metals for this reaction are inversely related to their metal-metal bond energies and to their electrocatalytic activities for the hydrogen evolution reaction.
Ashok K. Vijh, J.P. Randin
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Abstract The nature of factors that determine the electrochemical activities of metals for the M z + + z e - ⇌ M reaction have been investigated. High activities of metals for this reaction are inversely related to their metal-metal bond energies and to their electrocatalytic activities for the hydrogen evolution reaction.
Ashok K. Vijh, J.P. Randin
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Dissolution rates, electrochemical and passivation properties of alpha ZrO solid solutions in HF
Corrosion Science, 1962Abstract Studies were conducted into the mechanism of dissolution in hydrofluoric acid of alpha solid solution specimens of oxygen (up to 7·01 per cent by weight) in zirconium. They show that the electrochemical and corrosion properties of the metal are significantly influenced by the presence of oxygen.
W.J. James +2 more
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Hydrometallurgy, 2022
The role of galvanic coupling of chalcopyrite and pyrite in the enhanced rate of dissolution of chalcopyrite in acidic sulfate and chloride solutions at 30 °C has been defined in a detailed electrochemical study. The results indicate that, under ambient conditions, the effect of galvanic contact with pyrite only marginally increases the rate of ...
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The role of galvanic coupling of chalcopyrite and pyrite in the enhanced rate of dissolution of chalcopyrite in acidic sulfate and chloride solutions at 30 °C has been defined in a detailed electrochemical study. The results indicate that, under ambient conditions, the effect of galvanic contact with pyrite only marginally increases the rate of ...
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Journal of Solid State Electrochemistry, 2021
Electrochemical machining (ECM) operating with mechanism of electrochemical dissolution during an electrolysis process is one of the most crucial nontraditional manufacturing methods for industry. Estimation of the process parameters and also material dissolution rate (MDR) is significant for any of the ECM performance. In this study, MDR was estimated
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Electrochemical machining (ECM) operating with mechanism of electrochemical dissolution during an electrolysis process is one of the most crucial nontraditional manufacturing methods for industry. Estimation of the process parameters and also material dissolution rate (MDR) is significant for any of the ECM performance. In this study, MDR was estimated
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Hydrometallurgy, 2001
Abstract The presence of impurities in cyanide solutions may either accelerate or retard the dissolution of gold within the potential range typically encountered in conventional gold leaching, i.e. from −600 to 0 mV (SCE). By using potentiostatic and potentiodynamic techniques, it was found that lead species in solution increased the dissolution rate
Alain F Tshilombo, Roeløf F Sandenbergh
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Abstract The presence of impurities in cyanide solutions may either accelerate or retard the dissolution of gold within the potential range typically encountered in conventional gold leaching, i.e. from −600 to 0 mV (SCE). By using potentiostatic and potentiodynamic techniques, it was found that lead species in solution increased the dissolution rate
Alain F Tshilombo, Roeløf F Sandenbergh
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ECS Transactions, 2006
The anodic dissolution of a flotation zinc concentrate (63.4% sphalerite (ZnS), 20.1% pyrite (FeS2), 5% chalcopyrite (CuFeS2), 0.33% galena (PbS), 0.45% tetrahedryte (Cu12Sb4S13) and 0.4% arsenopyrite (FeAsS)) was studied in 1.7 M H2SO4. An electrochemical strategy (based on common electrochemical techniques) was proposed to find the potential ...
Jose Luis Nava +2 more
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The anodic dissolution of a flotation zinc concentrate (63.4% sphalerite (ZnS), 20.1% pyrite (FeS2), 5% chalcopyrite (CuFeS2), 0.33% galena (PbS), 0.45% tetrahedryte (Cu12Sb4S13) and 0.4% arsenopyrite (FeAsS)) was studied in 1.7 M H2SO4. An electrochemical strategy (based on common electrochemical techniques) was proposed to find the potential ...
Jose Luis Nava +2 more
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