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Sunday, May 17, 2020 | History

2 edition of oxide-coated cathode found in the catalog.

oxide-coated cathode

G. Hermann

oxide-coated cathode

by G. Hermann

  • 265 Want to read
  • 39 Currently reading

Published by Chapman and Hall .
Written in English


Edition Notes

Statement[by] G. Hermann, S. Wagener ; trans. by S. Wagener.
ContributionsWagener, S.
The Physical Object
Pagination2 vols
ID Numbers
Open LibraryOL13696313M

The safety and feasibility of industrial electrochemical production of sodium chlorate, an important chemical in the pulp and paper industry, depend on the selectivity of the electrode processes. The cathodic reduction of anodic products is sufficiently suppressed in the current technology by the addition of chromium(VI) to the electrolyte, but due to the high toxicity of these compounds Cited by: 1. The Oxide-Coated Cathode Vol. 2 G. Herrmann & S. Wagener ( pages) The proliferation of tube types 17 pages The RCA Radiotron manual R 87 pagesSeller Rating: % positive.

adshelp[at] The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A.   When an oxide‐coated cathode tube of the gas or vapor type passes more than a certain amount of current a spark or cathode spot occurs on the cathode and the tube is damaged. A peak current rating is, therefore, essential for any tube of that type and it becomes necessary to take data on how the sparking current is influenced by cathode temperature, vapor or gas pressure and other by: 2.

A solution to the heat equation subject to boundary conditions appropriate to an oxide‐coated cathode during pulsed current drain is obtained taking into account the Joule heating (J 2 ρ), emission cooling (J χ), and radiation at the emitting surface. The analysis shows that for active cathodes significant temperature changes can develop at the surface of the oxide coating during single Cited by: 4. In developing electrochemical cells, one must keep in mind that the real goal is to package and control all the materials and components (cathode and anode active materials, electrolytes, separators, current collectors etc.) in a limited volume to enable maximum energy .


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Oxide-coated cathode by G. Hermann Download PDF EPUB FB2

The oxide-coated cathode, Volume 1: Manufacture [Gunther Herrmann, Phil S. Wagener] on *FREE* shipping on qualifying offers. The oxide-coated cathode, Volume 1: ManufactureAuthor: Gunther Herrmann, Phil S.

Wagener. Oxide-Coated Cathode, Volume One: Manufacture [Herrmann, Gunther; Phil S. Wagener] on *FREE* shipping on qualifying offers. Oxide-Coated Cathode, Volume One: ManufactureAuthor: Gunther; Phil S. Wagener Herrmann. Additional Physical Format: Online version: Herrmann, Günther, Oxide-coated cathode.

London, Chapman & Hall, (OCoLC) Document Type. The most common type of indirectly heated cathode is the oxide-coated cathode, in which the nickel cathode surface has a coating of alkaline earth metal oxide to increase emission.

One of the earliest materials used for this was barium oxide ; it forms a monatomic layer of. The Oxide-coated cathode book Cathode, Vol. 1: Manufacture; Vol. 2: Physics, Including Thermal Emission from Metals and Semi-Conductors.G.

Herrmann and Phil S. Wagener; trans Cited by: 1. Full text of "The Oxide Coated Cathode (G. Hermann, S. Wagener) " See other formats. Looking for oxide-coated cathode. Find out information about oxide-coated cathode. A cathode that has been coated with oxides of alkaline-earth metals to improve electron emission at moderate temperatures.

Also known as Wehnelt cathode Explanation of oxide-coated cathode. This chapter discusses some of the recent oxide cathode researches to reexamine certain of the earlier publications to ascertain whether the experimental results are consistent with the modern theory of semiconductors and suggest new experiments which may lead to Cited by: A THEORY OF THE OXIDE-COATED CATHODE LEY A.E.R.E., Harwell (Gt.

Britain) (Received in revised form Novem ) SUMMARY A new model is presented in order to explain a variety of previous observations on the oxide-coated thermionic cathode, as well as the behaviour of a number of other oxide layer by: The Oxide-Coated Cathode By Dr.

Herrmann and Dr. Wagener. Translated by Dr. Wagener. Vol. 1: Manufacture. viii + ; 21s. net. Vol. 2: Physics. NN Berlin R London THEOXIDE-COATED CATHODE Translatedby R PostOfficeResearchStation DollisHill,London VOLUMEONE.

energy levels in the oxide-coated cathode. In Fig. 1 is shown a model of the oxide-coated cathode which, it is believed, incorporates most of the elements influencing the electron emission from these cathodes.

These elements will be considered separately from left to right. The base metal usually employed, and the one employed in theseFile Size: 1MB.

A high-performance LiCoO2 cathode was successively fabricated by a sol−gel coating of Al2O3 to the LiCoO2 particle surfaces and subsequent heat treatment at °C for 3 h.

Unlike bare LiCoO2, the Al2O3-coated LiCoO2 cathode exhibits no decrease in its original specific capacity of mA h/g (vs lithium metal) and excellent capacity retention (97% of its initial capacity) between and 2 Cited by: A hot cathode is a cathode that is heated by a filament to produce electrons by thermionic emission.

The filament is a thin wire of a refractory metal like tungsten heated red-hot by an electric current passing through it.

Before the advent of transistors in the s, virtually all electronic equipment used hot-cathode vacuum hot cathodes are used in vacuum tubes in radio. They coated the cathode with AlPO4 nanoparticles prepared from water The AlPO4 coating improved the thermal stability of the cathode, as opposed to using either Al2O3 or ZrO2 coatings derived.

The 6P43P-E output pentode is designed for amplification of low-frequency power. The 6P43P-E pentode is miniature device enclosed in glass bulb and provided with a nine-pin base and an indirectly heated oxide-coated cathode.

Near equivalent of 6BQ5 / EL86 / EL Name: 6P43P-E; Type: pentode; Cathode type: oxide,indirect heating; Envelope: glass, miniature; Mass,g: 20; Filament [ ]. /62,No. 1 19 NEW DEVELOPMENTS IN OXIDE-COATED CATHODES -COATED CATHODES FOR LOADS OF 1 TO 2 Afcm2 E-COATED CATHODE WITH AHALF-WATT HEATER FOR CATHODE-RAYTUBES Thefirst of thesearticles deals with oxide-coated cathodesdesigned to beloadedwith current densities several times higher than ordinary oxide-coated.

Barium Oxide Coated Disc Cathodes. As low as $ Built to Order. Model. barium-oxide-coated-discs. KPI Part - Cathode Model Number. Cathode Base. Qty. Add to Cart Request Information. Many items are stocked. If an item is out of stock it will show as backordered in your cart. Add to Compare Email.

See specifications below. Surface modification on the electrode has a vital impact on lithium-ion batteries, and it is essential to probe the mechanism of the modified film on the surface of the electrode. In this study, a Li2O-2B2O3 film was coated on the surface of the cathode material by solution method.

The cathode powders derived from co-precipitation method were calcined with various weight percent of the surface Cited by: 4. Recently studies concerned with cold cathode for CRT application has been also reported, but this review focuses on thermionic cathodes which consist of Oxide-coated cathodes and Impregnated cathodes.

A large cathode structure having a diameter on the order of 50 cm for producing uniform plasmas in a magnetic field. The cathode is oxide-coated and indirectly heated by a plurality of heater wires disposed in insulating tubes arranged parallel to each other.The Cathode Ray Tube at Work - John Rider pages.

The Complete Radio Book Yates Pacent pages. The Essentials of Electron Tubes and their Circuits - Hoag pages. The Oxide-Coated Cathode Vol. 1 G. Herrmann & S. Wagener ( pages) The Oxide-Coated Cathode Vol. 2 G. Herrmann & S. Wagener ( pages)Seller Rating: % positive.Measurement of the electrical conductivity of the oxide-coated cathode During the course of an investigation into the dependence of the conductivity of the oxide-coated cathode upon the porosity of the coating, a simple experimental arrangement has been developed which we believe to be superior to other devices used for this purpose.