In situ TEM observation of decomposition of high-purity sapphire
2009 (English)In: Philosophical Magazine Letters, ISSN 0950-0839, E-ISSN 1362-3036, Vol. 89, no 2, 113-119 p.Article in journal (Refereed) Published
The decomposition of agr-Al2O3 under 200 keV electron irradiation has been investigated by in situ high-resolution electron microscopy (HREM). It was confirmed that aluminium precipitated from agr-Al2O3 under 200 keV electron irradiation for less than 1 min over the temperature range from 700 to 1273 K. The electron dose rate was of the order of 1023 e m-2 s-1 and the vacuum level of the microscope was better than 10-6 Pa. The mechanisms of agr-Al2O3 decomposition were discussed based on two possible decomposition models: the thermally activated atom movement and the forced atom displacement
Place, publisher, year, edition, pages
2009. Vol. 89, no 2, 113-119 p.
alumina, electron irradiation, phase transformations, electron microscopy
Research subject Physical Chemistry
IdentifiersURN: urn:nbn:se:su:diva-35148DOI: 10.1080/09500830802649778OAI: oai:DiVA.org:su-35148DiVA: diva2:287239