Open AccessTreаtment of аluminа сerаmiсs by intense eleсtrоn аnd iоn beаms
Author(s) -
S.А. Ghyngаzоv,
AUTHOR_ID,
V.А. Kоstenkо,
S.V. Matrenin,
A.I. Kupchishin,
AUTHOR_ID,
AUTHOR_ID
Publication year - 2021
Publication title -
ķaraġandy universitetìnìn̦ habaršysy. fizika seriâsy/ķaraġandy universitetìnìņ habaršysy. fizika seriâsy
Language(s) - English
Resource type - Journals
eISSN - 2663-5089
pISSN - 2518-7198
DOI - 10.31489/2021ph2/50-55
Subject(s) - irradiation , microstructure , ion , materials science , ceramic , acceleration voltage , ion beam , melting point , electron , electron beam processing , analytical chemistry (journal) , atomic physics , range (aeronautics) , cathode ray , chemistry , composite material , physics , nuclear physics , organic chemistry , chromatography
The paper investigated modification of the microstructure of the surface layers of alumina ceramics under exposure to electron and ion beams. Electron beam irradiation was performed at accelerating voltage U = 15 kV and beam current of J = 70 A and J = 100 A. Ion irradiation was performed with carbon ions at accelerating voltage of U = 180 keV. The current density and energy density varied in the range of 15–85 A/cm2 and 0.3–1.5 J/cm2 , respectively. The amount of energy acting on the ceramic surface depended on the number of pulses N. It is shown that exposure to electron and ion beams changes the microstructure of the irradiated ceramic layer. In general, the effect of exposure is similar for electron and ion irradiation, and it is characterized not only by surface melting, but also by formation of a finer microstructure through the depth of the irradiated layer, which is oriented in the direction of the electron and ion beam exposure. It is shown that crystallization processes in overheated layers of ceramics depend on its type and melting point.