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Electrical Discharges under High Voltage on Surface of Silica‐Nickel Ceramic Composites
Author(s) -
Jankowiak A.,
Blanchart P.
Publication year - 2004
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200400120
Subject(s) - materials science , nickel , electric field , composite material , ignition system , composite number , ceramic , cermet , electric discharge , electric current , direct current , voltage , electrode , metallurgy , electrical engineering , chemistry , physics , quantum mechanics , thermodynamics , engineering
Strong electrical breakdowns on surface of Silica‐Nickel cermets are obtained under pulsed electric field. The electric field is significantly lower than for breakdowns at a similar air gap under the same atmosphere pressure. This hot plasma‐like process can be used for gas or liquid ignition. Processes follow the Paschen's and the Fowler‐Nordheim's laws at surface micro‐protrusions, when the current percolates through the composite material.