NDLI: Effect of electrodes material on transient currents in dielectric liquid

Content Provider	IET Digital Library
Author	Beldjilali, Abdeslem Amroun, Nadia Saidi Mansour, Mahdi Saidi, Mohamed
Abstract	In this study, results of polarisation and depolarisation currents measured on an insulating liquid are presented. The goal is to contribute to a better understanding of mechanisms occurring at the metal–liquid contact. Electrodes of different metallic nature are associated with the same mineral oil, the metal/liquid/metal structure is submitted to DC voltages and the transient current is recorded with a high sensitive electrometer. The current versus time feature shows that the conduction process is in good compliance with the metal work function rather than with its electric conductivity. The current versus field characteristics indicate a predominance of the ohmic behaviour for the low fields. The space charge limited conduction regime appears as soon as the electrical constraint exceeds ∼1 MV/m, which corresponds to 10% of the breakdown voltage. Schottky injection is suspected to occur from the metal into the liquid since the applied fields are uniform and non-extremely intensified.
Starting Page	272
Ending Page	278
Page Count	7
ISSN	17518822
Volume Number	13
e-ISSN	17518830
Issue Number	Issue 2, Mar (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-smt/13/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2018.5229
Journal	IET Science, Measurement & Technology
Publisher Date	2018-11-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Conduction Process Contact Resistance, Contact Potential, And Work Function Depolarisation Currents Depolarization Effects Dielectric Breakdown And Space-charge Effects Dielectric Liquid Dielectric Liquids Dielectric Polarisation Dielectric Polarization Electric Breakdown Electric Conductivity Electrical Conductivity Electrochemical Electrodes Electrochemistry And Electrophoresis Electrode Electrode Materials Insulating Liquid Metal Work Function Metal–liquid Contact Mineral Oil Polarisation Current Schottky Effect Schottky Injection Space Charge Space Charge Limited Conduction Work Function
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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