Results 151 to 160 of about 10,138,586 (190)

The investigation of corrosion of metals and semiconductors by volta potential measurements

Electrochimica Acta, 1962
Abstract The interaction of iron, germanium and silicon with oxygen and water vapour was investigated by means of measurements of the chemisorption kinetics and of Volta-potentials. The oxide layer formed on the surface of Fe, Ge and Si by Adsorption of dry oxygen loses its protective properties in the presence of water vapour, so that after the ...
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Experimental study of Volta potentials in water/nitrobenzene systems with anion adsorption

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1986
Abstract The Volta potential of the water/nitrobenzene interface has been measured in the presence of tetraethylammonium picrate and sodium tetraphenylborate. The effect of the latter salt on the changes in surface potential and surface tension of both water and nitrobenzene-saturated water was also studied.
Irwina Zagórska, Zbigniew Koczorowski
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Volta Potentials of the Copper-Nickel Alloys and Several Metals in Air

Journal of Applied Physics, 1951
Volta potentials of various metals approximately parallel the emf series. Metals abraded wet are more noble than when abraded dry, the transition metals changing an average of 0.28 volt compared with 0.07 volt for the nontransition metals. This owes possibly to the greater tendency of the transition metals to chemisorb oxygen, especially in the ...
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Volta potential of clad AA2024 aluminium after exposure to CeCl3 solution

Corrosion Science, 2014
Abstract AA2024 clad with AA1050 was immersed in CeCl 3 solution to promote deposition of cerium species. The deposition occurs on the entire sample surface for the alkaline etched substrate, while it is very limited for the degreased substrate. The surface potential (Volta potential) was investigated by scanning Kelvin probe force microscopy after ...
ANDREATTA, Francesco, M. E. Druart, E. Marin, D. Cossement, M. G. Olivier, FEDRIZZI, Lorenzo   +5 more
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Elimination of Volta-Potential Noise from Plate Field Mills

Review of Scientific Instruments, 1967
The Volta effect severely limits the use of conventional plate field mills in detecting weak electric fields. A modified field mill is described which eliminates the influence of the Volta noise on the measurement. This is achieved by changing the distance between the electrodes during the operation of the instrument.
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Volta-potential measurements characterizing the membrane properties of conducting polypyrrole films

Synthetic Metals, 1991
Abstract The principle of Volta-potential measurements characterizing the membrane properties of pyrrole-based conducting polymer films is described. Poly(N-methylpyrrole) is shown to constitute an anion exchanger in the oxidized state. The incorporation of negative fixed charges into the polymer matrix makes the film a cation-exchanger.
C Zhong, K Doblhofer
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Volta potential of second phase particles in extruded AZ80 magnesium alloy

Electrochimica Acta, 2006
Magnesium alloys show strong susceptibility to localized corrosion when immersed in aggressive solutions (e.g. chlorides). The existence of second phase particles in the microstructure might represent initiation sites for localized corrosion. This is due to the formation of galvanic couples between the particles and the matrix.
Andreatta, F., Apachitei, I., Kodentsov, A., Dzwonczyk, J., Duszcyk, J.   +4 more
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Cage fish farming in the Volta lake and the lower Volta : Practices and potential impacts on water quality

2015
Concerns have been raised about the proliferation of cage fish farming in the Volta lake and the potential water quality impacts. The study was undertaken to determine current cage fish farming practices on the lake, and to assess their impacts on water quality of the lake.
Asmah, R, Karikari, AY, Abban, EK, Ofori, JK, Awity, LK   +4 more
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Galvani and Volta Potentials at the Interface Separating Immiscible Electrolyte Solutions

1987
Recent progress and main problems of the study of electrochemical equilibrium properties are reviewed for interfaces between two immiscible liquid electrolyte solutions. The discussed properties are mainly described in terms of the Galvani, Volta, zero charge, and surface (dipolar) potentials at the liquid-liquid interfaces and free liquid surfaces ...
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Pesticides Bioconcentration Potential of Aquatic Plants in the Volta Lake

2019
The Volta Lake is known for the proliferation of numerous aquatic plants in its shallow waters. A major cause for the presence of the luxuriant vegetation is the intensive agricultural activities along the banks. These activities are heavily dependent on agrochemicals including fertilizers, which eventually get into the aquatic ecosystem via water ways.
Koranteng, S. S., Darko, D. A., Nukpezah, D., Ameka, G. K.   +3 more
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