Title :
Experimental Observation of Surface Charging of High-Voltage Insulators for Vacuum Apparatus
Author :
De Tourrell, C.H. ; Srivastava, K.D. ; Woelke, U.J.
Author_Institution :
Department of Materials Science Research, Hydro-Quebec Institute of Research, Varennes, Que., Canada
Abstract :
The surface of cylindrical insulators placed in high vacuum becomes positively charged when subjected to a high-voltage stress parallel to the dielectric surface. A study is made of the variation of the surface charge density as a function of the voltage applied to insulators made of alumina ceramic, nylon, Teflon® and Plexiglas®. Direct and pulsed voltages were used in the experiments.
Keywords :
Ceramics; Dielectric breakdown; Dielectrics and electrical insulation; Electric breakdown; Electrodes; Seals; Solids; Surface charging; Vacuum breakdown; Voltage;
Journal_Title :
Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TEI.1972.299221
