Results 271 to 280 of about 6,075 (306)

Peculiarity of hydrogen distribution in steel by cathodic charging

Journal of Alloys and Compounds, 2003
Steel surfaces of machines undergo corrosion protection most commonly by means of electrodeposited Zn, Cd, Ni, Cr etc. with chemical or electrochemical surface pretreatment for deposition. To preserve the surface geometry steel wire and strips undergo cathodic electrocleaning in an alkaline bath and cathodic etching or pickling in acid solutions.
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Defects Induced in Copper by Cathodic Charging of Hydrogen

Journal of The Electrochemical Society, 1989
Scanning and transmission electron microscopes were used to study the effect of cathodic charging of hydrogen on the defect structure of bulk copper foils. Cathodic charging of hydrogen over an extended period of time (~24h) resulted in a considerable reduction in the ductility of copper foils.
S. Nakahara, Y. Okinaka
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Cathode charge sampling readout system for MWPC

Nuclear Instruments and Methods in Physics Research, 1983
Abstract In order to reach a horizontal spatial resolution of about 0.1 mm in the two arms spectrometer of the CERN UA-6 experiment, it is planned to add to the MWPC an induced charge cathode readout system. The construction of the chambers and the cathode readout electronics are described. Results of preliminary tests are given.
J. Antille, A. Bernasconi, J.-C. Berney, C. Joseph, J.-F. Loude, D. Steiner, M.T. Tran   +6 more
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Space-charge waves in a double-cathode tube

Proceedings of the IEEE, 1972
A double-cathode tube is working in the space-charge region. A small-signal theory for such a tube, including transit-time effects, yields the result that two space-charge waves are traveling inwards from each of the cathodes.
H. Groendijk, W. Versnel
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Charge localization on the surfaces of oxide-coated cathodes

British Journal of Applied Physics, 1960
Anomalous results obtained while using the Kelvin method of determining contact potential differences between oxide-coated cathodes and an evaporated gold film reference surface in an atmosphere of hydrogen have been investigated. Very high contact potential differences have been associated with a separation of charge from ionized gas on the passage of
B J Hopkins, F A Vick
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Role of space charge in field emission cathodes

Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, 1993
Space charge plays an extremely important role in thermionic vacuum tubes. Normally it can be neglected in the operation of field emitter cathodes because the very high electric fields at the cathode negates the formation of space charge. However at very high current densities, it may be evident in field emission cathodes.
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Space Charge Effect in the Oxide Cathode Layer

Journal of the Physical Society of Japan, 1951
It was concluded theoretically that space charge may be formed in the oxide cathode layer near the surface, when electric field at the cathode surface is sufficiently strong so that the diode may b...
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Cathode charge distributions in multiware chambers

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1985
J.R. Thompson, J.S. Gordon, E. Mathieson
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Cathode charge distributions in multiwire chambers

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1984
E. Mathieson, J.S. Gordon
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Possibility of false interpretations of hydrogen measurements in ferritic steel after an electrochemical cathodic charging process

International Journal of Hydrogen Energy, 2021

exaly