THE RELATION BETWEEN PREEXISTING DEFECTS AND CHARGING-UP IN 9mol%Y2O3-ZrO2 STUDIED BY AUGER ELECTRON SPECLROSCOPY
Guo Han-sheng (郭汉生)a, W. Maus-Friedrichsb, V. Kempterb
a School of Materials Science and Engineering, Beijing Polytechnic University, Beijing 100022, China; b Physikalisches Institut der Technischen Universit$\ddot{\rm a}$t Clausthal, Leibnizstr.438678 Clausthal-Zellerfeld, Germany
Abstract Electron beam damage and charging process in 9mol%Y2O3-stabilized zirconia (YS-ZrO2) are studied by Auger electron spectroscopy (AES). Electron bombardment induces electron-stimulated desorption at the surface on one hand; on the other hand, it modifies the preexisting defects in the irradiated zone. Both effects will lead to charging-up of YS-ZrO2. The charging related to the first effect can be compensated by an O2 environment of 6.5×10-6 Pa, and the charging related to both effects can be inhibited by specimen heating up to 300℃. However, the modified preexisting defects will not return to their initial states prior to the radiation. Their charging behavior and charge compensation are discussed in the model of the variants of the oxygen vacancies.
Received: 08 April 1999
Accepted manuscript online:
(Electron spectroscopy (X-ray photoelectron (XPS), Auger electron spectroscopy (AES), etc.))
Cite this article:
Guo Han-sheng (郭汉生), W. Maus-Friedrichs, V. Kempter THE RELATION BETWEEN PREEXISTING DEFECTS AND CHARGING-UP IN 9mol%Y2O3-ZrO2 STUDIED BY AUGER ELECTRON SPECLROSCOPY 2000 Chinese Physics 9 225
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