Results 261 to 270 of about 2,801,004 (322)

Effect of cathodic micro-discharges on oxide growth during plasma electrolytic oxidation (PEO)

open access: yesSurface and Coatings Technology, 2015
Plasma electrolytic oxidation (PEO) of magnesium alloy is performed in NH4F and alkaline-silicate electrolytes within various waveforms of bipolar current pulses to investigate the role of the cathodic bias on both the growth mechanism of PEO layers and ...
Alexandre Nomine   +2 more
exaly   +2 more sources

Micro-discharges in high vacuum

2020
Key-point Micro-discharges over the insulator surface in high vacuum are induced by gas molecules adsorbed on the electrode surfaces. In our experiment, Argon glow cleaning showed a distinct conditioning effect on the electrode surfaces. Micro-discharges
Nagamitsu Yoshimura
openaire   +2 more sources

Acoustic emission characteristics of micro-discharges in initial pulsed PEO process on 60% SiCp/Al composite.

Ultrasonics, 2023
The initial discharge process of pulsed plasma electrolytic oxidation (PEO) on the 60% SiCp/2009 aluminum metal matrix composite (Al MMC) in silicate solution was monitored by acoustic emission (AE) technique. Parameters and correlations of AE signals on
Yizhao Liao   +8 more
semanticscholar   +1 more source

Novel combination of high voltage nanopulses and in-soil generated plasma micro-discharges applied for the highly efficient degradation of trifluralin.

Journal of Hazardous Materials, 2021
Cold plasma is considered a highly competitive advanced oxidation process for the removal of organic pollutants from soil. Herein, we describe for the first time the combination of in-soil generated plasma micro-discharges with the advantageous high ...
M. Hatzisymeon   +3 more
semanticscholar   +1 more source

Numerical characterization of the breakdown process of dc-driven micro-discharges sustained by thermionic emission

Journal of Physics D: Applied Physics, 2022
Because of the larger surface-area-to-volume ratio, micro-discharges can be sustained by surface emission processes. If the cathode is heated, a micro-discharge can be sustained mainly by thermionic emission.
Yujie Zhong   +6 more
semanticscholar   +1 more source

Micro-Discharge Micro-Thruster

41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2005
This paper summarizes the experiments and analysis of the micro-discharge micro- thruster developed jointly by Ewing Technology Associates and the University of Washington. The key experimental result has been the demonstration of a sustained discharge in a very simple micro-discharge type of structure (aperture ~ 300 micron) under demanding flow ...
John Slough   +3 more
openaire   +2 more sources

Highly Sensitive Wideband Measurement Method of DC Micro-Discharges Based on Optimized Subdivided Electrode System

IEEE Transactions on Power Delivery
The presence of micro-discharges, which is caused by micro-protrusions or conductor surface roughness, was a potential hazard leading to non-uniform charging at the gas-solid interface of the insulators in DC gas-insulated equipment.
jie Wang, Geng Chen, Youping Tu
exaly   +2 more sources

A new perspective towards in-situ cold plasma remediation of polluted sites: Direct generation of micro-discharges within contaminated medium.

Chemosphere, 2020
The in-situ treatment of solid wastes might be regarded as cost-effective and minimum environmental fingerprint solution, particularly with reference to contaminated soils, offering several benefits compared to ex-situ methods.
C. Aggelopoulos, C. Tsakiroglou
semanticscholar   +1 more source

Melting phenomena by micro‐discharge

Welding International, 1995
(1995). Melting phenomena by micro‐discharge. Welding International: Vol. 9, No. 8, pp. 607-614.
H Maruo, Y Hirata, K Ozaki
openaire   +1 more source

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