Results 251 to 260 of about 40,868 (277)

Anodic Dissolution of N+ Silicon

Journal of The Electrochemical Society, 1971
An experimental study has been made of the anodic dissolution of silicon in aqueous solution with emphasis on heavily doped n‐type. Current‐voltage curves, the effective dissolution valence, and the critical current density have been determined for n, n+, and p samples. Since n+ silicon has a resistivity less than 0.05 ohm‐cm, it can be electropolished
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Electrochemical Machining—mechanisms of anodic dissolution

Electrochimica Acta, 2016
Abstract Electrochemical Machining (ECM) is widely used to produce products of high quality from metals and alloys. The work pieces are shaped by controlled anodic dissolution at extremely large current densities of about 100 A/cm2 in neutral solutions (normally aqueous NaNO3).
M.M. Lohrengel, K.P. Rataj, T. Münninghoff   +2 more
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Fluidised-bed anodic dissolution of covellite

Hydrometallurgy, 1976
Abstract The anodic dissolution of synthetic covellite (CuS) has been investigated using a fluidisedbed anode technique. In sulphuric acid electrolyte the dissolution of CuS is accompanied by excessive oxygen evolution at the Pt feeder electrode unless the applied current is maintained at unrealistically low values.
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Anodic dissolution of brass in acids

Anti-Corrosion Manual, 1970
Anode weight loss and polarization studies of brass in nitric, hydrochloric and sulphuric acids indicate that the copper dissolves in the cuprous state in hydrochloric acid whereas it is in cupric form in the other two acids. In nitric acid the local cell corrosion is completely stopped, when made sufficiently anodic showing a positive difference ...
V.K.V. Unni, T.L. Rama Char
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The anodic dissolution of polycrystalline Be

Corrosion Science, 1969
Abstract The effect of F − , Cl − , Br − , I − , NO 3 − , SO 4 2− PO 4 3− , Li + , Na + , K + and Mg 2+ on the anodic dissolution of polycrystalline Be at various c.d.s has been studied in aqueous solutions. The apparent (calculated) valency with which Be ions enter into solution was found to be relatively independent of c.d.
K.G. Sheth, J.W. Johnson, W.J. James
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Complex Surface Dynamics during Anodic Dissolution of Ni

Langmuir, 2005
The evolution of the surface roughness during the anodic dissolution of polycrystalline Ni was investigated by means of ex situ AFM in acid phosphate solutions. To characterize the time and spatial scaling behavior of surface roughness, the interface width and the power spectral density of the surface at different dissolution stages were analyzed in ...
A G, Muñoz, M E, Vela, R C, Salvarezza
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Fluidised-bed anodic dissolution of chalcocite

Hydrometallurgy, 1976
Abstract The anodic dissolution of chalcocite (Cu 2 S) has been investigated using a fluidised-bed anode technique. Results obtained for a variety of electrolytes and experimental conditions indicate that the fluidised-bed anodic dissolution of chalcocite occurs via the formation of an intermediate copper sulphide, viz., “blue-remaining” covellite ...
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Anodic dissolution of Al sacrificial anodes in NaCl solution containing Ce

Corrosion Science, 2011
Abstract The corrosion behaviour of Al–Zn–In sacrificial anodes has been investigated in a sodium chloride solution containing CeCl 3 . Scanning electron microscopy, energy-dispersive X-ray analysis, and inductively coupled plasma mass spectrometry have been employed to gain knowledge of the micro-morphology and corrosion process of the Al alloy ...
W. Xiong, G.T. Qi, X.P. Guo, Z.L. Lu
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Anodic tin dissolution in acidic perchlorate solution

Surface Technology, 1976
Abstract The dissolution of tin in acidic perchlorate solution has been studied by both rotating disc and impedance techniques. Two regions of differing slope are observed in the Tafel data when the effects of diffusion are eliminated. The Tafel slope value of approximately 85 mV/dec is observed to change to a value of about 41 mV/dec at more ...
B.N. Stirrup, N.A. Hampson
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Anodic Dissolution of Zinc in Potassium Nitrate

Journal of The Electrochemical Society, 1967
Abstract : The apparent valence of pure zinc dissolving anodically in 3% KNO3 was determined as a function of current density, temperature, and ultrasonic agitation. The apparent valence of zinc dissolving anodically at 24C at current densities < 30 ma/sq cm is 2.01 = 0.01.
M. E. Straumanis, J. L. Reed, W. J. James   +2 more
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