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Journal of Materials Science

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11-10-2017 | Ceramics

Increased mobility of an α-Al₂O₃ grain boundary by electron-beam irradiation

Authors: Sung Bo Lee, Seung-Yong Lee, Miyoung Kim, Heung Nam Han

Published in: Journal of Materials Science | Issue 4/2018

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Abstract

When subjected to electron-beam irradiation in a transmission electron microscope, the grain boundary in an α-Al₂O₃ bicrystal is observed to migrate even at room temperature. The bicrystal is composed of grains with the same normal direction, and thus the difference in strain energy or surface energy between the two grains cannot explain the observed migration. We attribute this phenomenon to an increase in grain boundary mobility by electron-beam irradiation, especially by radiolysis effects.

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Title: Increased mobility of an α-Al2O3 grain boundary by electron-beam irradiation
Authors: Sung Bo Lee
Seung-Yong Lee
Miyoung Kim
Heung Nam Han
Publication date: 11-10-2017
Publisher: Springer US
Published in: Journal of Materials Science / Issue 4/2018
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-017-1688-z

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