Improvement of surface flashover in vacuum
WitrynaSeveral models describing cathode-initiated flashover have been built on the pioneering work of Boersch and coworkers, published in 1963, and credit the breakdown mechanism to the action of an intense secondary-electron … Witryna5 paź 2024 · Corresponding experiments are also conducted to corroborate previous conclusions, presenting both a deflected electron trajectory and an improved …
Improvement of surface flashover in vacuum
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Witryna6 wrz 2024 · Surface Treatments A New Surface Treatment Method for Improving Surface Flashover Performance of Polymers in Vacuum Authors: Yongjie Nie Xi'an … Witryna16 lip 2024 · Polymer materials usually present lower surface flashover strength compared with their bulk breakdown strength, particuarly in a vacuum. Flashover along the solid insulation surface may pose a significant challenge to …
Witryna21 paź 2024 · In the present paper, a new three-layered 45° insulation structure is proposed and investigated to further improve the surface flashover performance of the 45° vacuum- insulator configuration This structure was prepared by inserting organic composite between the electrode and insulator With a numerical simulation method, … WitrynaHence, when considering improving the electrical breakdown performance of a dielectric polymer, surface modification methods such as oxidation should be strictly forbidden. ... Yan, P.; Schamiloglu, E. Enhanced Surface Flashover Strength in Vacuum of Polymethylmethacrylate by Surface Modification Using Atmospheric-Pressure …
Witryna17 lut 2024 · Improving surface flashover voltage on vacuum-dielectric interface irradiated by electrons is a long-standing challenge for developing high-voltage and high-power spacecraft technology. The basic issue is understanding the role of radiation electrons in the process of surface flashover. Witryna9 mar 2024 · In addition, surface flashover is an important dielectric performance of insulating materials. In the process of surface flashover, arc develops along the dielectric surface [ 35 ]. Thus, the strength of arc ablation resistance can also be used to characterize the ablation during the surface flashover.
Witryna6 gru 2010 · The influences of Mo addition of Mo/Al 2 O 3 cermet on the surface flashover voltage in vacuum of samples were experimentally investigated, indicating that the surface flashover voltage of three and five-layer structures were improved by 77% and 117%, respectively. Through electrostatic field simulation, it was found that …
WitrynaTo improve the surface flashover performance is of great significance for the development of advanced power transmission equipment and insulation materials. This study reviews the research progress of surface flashover in vacuum regarding to effective methods to improve the surface flashover performance in vacuum, … in and out in allen texasWitrynaWhile surface flashover in vacuum is generally undesirable, it is necessary for the operation of triggered vacuum gaps, i.e. the “switch” for many pulse power systems. Much has been written about the mechanisms by which triggered vacuum gaps operate and many ingenious designs have been described [30–33].By way of illustration, we … in and out imatraWitryna21 paź 2024 · A new insulation structure of Mo/Al2O3 cermet-Al2O32 ceramic-Mo/Al2O3 cermet was designed to improve the surface flashover performance in vacuum through co-firing, where the volume addition of metal Mo was managed from 2 vol% to 50 vol% and there could exist one or two layers with different Mo addition in Mo/Al2O3 cermet. … in and out in alabamaWitryna3 cze 2024 · Shao et al’s investigation found that NTP is effective in improving the surface flashover strength of polymethylmethacrylate in a vacuum [28]. Chen 27, et al researched surface modification of epoxy resin using an He/ CF 4atmospheric pressure plasma jet for the improvement of flashover withstanding characteristics in a … in and out imperial beachWitrynaA new insulation system with inorganic A-B-A insulators was proposed to improve the surface flashover performance in vacuum. Inorganic A-B-A insulator samples of Mo/Al2O3 cermet-Al2O3 ceramic-Mo/Al2O3 cermet were prepared, in which the conductivity and permittivity of the Mo/Al2O3 cermets were controlled through … duxbury town clerkWitryna12 kwi 2024 · Author: Dariusz Korzec, Markus Hoffmann and Stefan Nettesheim Date: March 2024 Abstract An atmospheric pressure plasma jet (APPJ) sustained by a pulsed atmospheric arc (PAA) transferred on an electrically conducting surface was operated with a mean power of 700 W, a pulse frequency of 60 kHz, and a gas mixture of N2 … duxbury toy storeWitryna19 sty 2024 · Combining with the results above, a model with combined effects of both kinetic and deposited electrons on surface flashover in vacuum is thus proposed, base on which the guidance for the... duxbury tragedy today