ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Cerium dioxide (CeO2) is a well-studied oxide because of its technological applications,such as a major component in the catalysts, stable capacitors and so on. CeO2 with a cubic fluoritestructure is also expected as the material for simulating behaviors of uranium dioxide under energeticparticle irradiation, which leads high burn-up structure attributable to pressure increase in fuelcladding tubes. In this work, the stability of crystal structure and surface morphology change in CeO2will be clarified. Polycrystalline samples were irradiated with 300 keV Xe+, 18 MeV I5+, 350 keV O+and 12 MeV O3+ ions at temperatures from 370 to 1000 K. Microstructural evolutions wasinvestigated with Scanning electron microscopy, Raman Spectroscopy and X-ray diffractometry.Irradiation effects at high temperature were observed as surface etching and resulting bubbleformation, however blistering was not detected. Raman spectra and diffraction data indicatesdiffusion of oxygen vacancies is sufficient at 900 K and above
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.929.pdf
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