Title :
Influence of impurities in the tribological behaviour and the dielectrical properties of alumina
Author :
Bigarre, J. ; Fayeulle, S. ; Treheux, D.
Author_Institution :
Ecole Centrale de Lyon, Ecully, France
Abstract :
The dielectric behavior of insulators can be explained using the space charge physics developed by G. Blaise et al. With this model, based on the concept of polarons, “defects” associated with local variation of polarisability are responsible for trapping charges. This paper investigates,the effects of chromium in sapphire single-crystal and of zirconium implantation in sintered alumina on the dielectric and tribological properties
Keywords :
sapphire; Al2O3:Cr; Al2O3:Zr; Zr implantation; alumina; charge charges; chromium; defects; dielectric properties; impurities; insulators; polarisability; polarons; sapphire single-crystal; sintered alumina; space charge physics; tribological behaviour; tribological properties; Chromium; Dielectrics and electrical insulation; Electron traps; Friction; Impurities; Mirrors; Surface cleaning; Temperature; Testing; Zirconium;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1994., IEEE 1994 Annual Report., Conference on
Conference_Location :
Arlington, TX
Print_ISBN :
0-7803-1950-8
DOI :
10.1109/CEIDP.1994.591759
