Title
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Advanced three-dimensional electron microscopy techniques in the quest for better structural and functional materials
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Author
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Abstract
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After a short review of electron tomography techniques for materials science, this overview will cover some recent results on different shape memory and nanostructured metallic systems obtained by various three-dimensional (3D) electron imaging techniques. In binary NiTi, the 3D morphology and distribution of Ni4Ti3 precipitates are investigated by using FIB/SEM slice-and-view yielding 3D data stacks. Different quantification techniques will be presented including the principal ellipsoid for a given precipitate, shape classification following a Zingg scheme, particle distribution function, distance transform and water penetration. The latter is a novel approach to quantifying the expected matrix transformation in between the precipitates. The different samples investigated include a single crystal annealed with and without compression yielding layered and autocatalytic precipitation, respectively, and a polycrystal revealing different densities and sizes of the precipitates resulting in a multistage transformation process. Electron tomography was used to understand the interaction between focused ion beam-induced Frank loops and long dislocation structures in nanobeams of Al exhibiting special mechanical behaviour measured by on-chip deposition. Atomic resolution electron tomography is demonstrated on Ag nanoparticles in an Al matrix. |
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Language
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English
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Source (journal)
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Science and technology of advanced materials. - Sendai
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Publication
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Sendai
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2013
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ISSN
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1468-6996
1878-5514
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DOI
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10.1088/1468-6996/14/1/014206
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Volume/pages
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14
:1
(2013)
, p. 1-13
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Article Reference
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014206
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ISI
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000316463800008
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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