Vacuum discharge from perovskite oxide electrodes

Author

Shkuratov, Sergei I.

Author_Institution

Inst. of Electrophys., Acad. of Sci., Ekaterinburg, Russia

Volume

2

fYear

1996

fDate

21-26 Jul 1996

Firstpage

713

Abstract

In the paper, the authors present results of investigations of electrical discharges in vacuum from perovskite-like La_0.3Sr _0.7CoO₃ and YBa₂Cu₃O_6.95 electrodes. Data are given on the local chemical composition of cathode surfaces subjected to nanosecond high-current arc discharges and on the erosion of ceramic cathode materials. The results of measurements of the work function and of the emission capability of extended ceramic cathodes and of field emission characteristics of clean surfaces of perovskite-like oxides are presented. A comparative analysis has been carried out of the behavior of ceramic cathodes with results obtained from discharge of metallic electrodes

Keywords

barium compounds; cathodes; cobalt compounds; copper compounds; electric breakdown; high-temperature superconductors; insulation testing; lanthanum compounds; strontium compounds; vacuum arcs; vacuum breakdown; vacuum insulation; work function; yttrium compounds; La_0.3Sr_0.7CoO₃; YBa₂Cu₃O_6.95; cathode surfaces; ceramic cathode materials erosion; emission capability; field emission characteristics; insulation breakdown tests; local chemical composition; nanosecond high-current arc discharges; perovskite oxide electrodes; vacuum discharge; work function; Cathodes; Ceramics; Composite materials; Crystallization; Electrodes; Electron emission; Scanning electron microscopy; Superconducting materials; Surface cleaning; Surface discharges;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 1996. Proceedings. ISDEIV., XVIIth International Symposium on

Conference_Location

Berkeley, CA

Print_ISBN

0-7803-2906-6

Type

conf

DOI

10.1109/DEIV.1996.545456

Filename

545456