Zobrazeno 1 - 10 of 96 pro vyhledávání: '"J.M. Pénisson"'
1
TEM observations on the behavior of facet junctions in interfaces and inclusions
Autor: Erik Johnson, J.M. Pénisson, Ulrich Dahmen, Tamara Radetić, Frédéric Lançon
Publikováno v: Zeitschrift für Metallkunde. 96:413-418
The increasing role of interfaces with decreasing scale is particularly important for small inclusions, grains or precipitates. In this work, we present a brief review of some of our recent TEM investigations of faceted singular interfaces and interf
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b131d89d37df65142dd47cd974fa2f09
https://doi.org/10.3139/146.018140
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2
Measurement of the displacement field of dislocations to 0.03 Å by electron microscopy
Autor: Jean-Luc Putaux, Martin Hÿtch, J.M. Pénisson
Publikováno v: Nature. 423:270-273
Defects and their associated long-range strain fields are of considerable importance in many areas of materials science. For example, a major challenge facing the semiconductor industry is to understand the influence of defects on device operation, a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a01f107165d0f414e76f05187329ef04
https://doi.org/10.1038/nature01638
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3
Measurement of the volume expansion of a grain boundary by the phase method
Autor: J.M. Pénisson, T. Vystavel
Publikováno v: Ultramicroscopy. 90:163-170
The volume expansion of a molybdenum twin boundary is measured by the phase method. The influence of experimental parameters such as specimen thickness and defocus is investigated. It is also shown that the presence of residual 3-fold astigmatism can
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b2942eef8f3ecf32f58e1507591dab5
https://doi.org/10.1016/s0304-3991(01)00139-5
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4
Wetting of molybdenum grain boundaries by nickel: effect of the boundary structure and energy
Autor: T Vystavel, J.M Pénisson
Publikováno v: Acta Materialia. 48:3303-3310
The structural effect of the penetration of nickel along symmetrical [101] tilt grain boundaries (GBs) in two different molybdenum bicrystals is investigated. The selection of GBs (Σ=3{121} and Σ=11{323}) is governed by their different energy so th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d520158e64f7870de944547d03d3991c
https://doi.org/10.1016/s1359-6454(00)00157-9
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5
Étude par microscopie à haute résolution et imagerie filtrée de la ségrégation et du début de précipitation dans les joints de grains
Autor: T. Vystavel, J.M. Pénisson, M. Bacia
Publikováno v: Scopus-Elsevier
La structure et la chimie locales des joints de grains et des interfaces dans les materiaux conditionnent leurs proprietes physiques. Leur determination est donc un probleme majeur. La microscopie electronique est un des moyens d'etude privilegie de
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e38ff9f5960b4fdd7eb6289e1963af6
https://doi.org/10.1051/jp4:1999415
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6
High Resolution Study of a Quasiperiodic Grain Boundary in Gold
Autor: U. Dahmen, J.M. Pénisson, F. Lançon
Publikováno v: Materials Science Forum. :27-34
Amazed bicrystal of gold has been obtained by vacuum deposition of gold onto a [001] germanium substrate. Amongst the different grain boundaries existing in this bicrystal, there exits facets which are completely assymetric and presenting a non perio
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::424fb3df3484a08172d0d72fbbdfa2ad
https://doi.org/10.4028/www.scientific.net/msf.294-296.27
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8
Atomic structure of the ∑ = 5, (210) and (310), [001] tilt axis grain boundaries in Mo: a joint study by computer simulation and high-resolution electron microscopy
Autor: J.M. Pénisson, M. Bacia, J. Morillo, Vassilis Pontikis
Publikováno v: Philosophical Magazine A. 76:945-963
We present the results of a parallel study of the atomic structure of the ∑ = 5, (210), θ = 53·13° and (310), θ = 36·87°, [001] tilt axis grain boundaries in bcc Mo, by computer simulation and high-resolution electron microscopy (HREM). Exces
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e7e31d029acc5b3762f04719ed54eec0
https://doi.org/10.1080/01418619708200009
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9
Analyse chimique d'un superalliage base nickel par microscopie électronique à haute résolution
Autor: J.M. Pénisson
Publikováno v: Journal de Physique IV Proceedings
Journal de Physique IV Proceedings, EDP Sciences, 1996, 06 (C2), pp.C2-117-C2-123. ⟨10.1051/jp4:1996216⟩
The knowledge of the chemical composition at the atomic level of alloys is essential to understand their physical properties. A detailed analysis of the contrast of high resolution images can lead to a semi quantitative evaluation of local changes in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1501dd67f03915d38f109f2ca22f748
https://doi.org/10.1051/jp4:1996216
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10
Microscopie à haute résolution d'une interface semi-cohérente phase µ/matrice γ-γ'
Autor: R. Bonnet, M. Loubradou, J.M. Pénisson
Publikováno v: Journal de Physique IV Proceedings
Journal de Physique IV Proceedings, EDP Sciences, 1996, 06 (C2), pp.C2-165-C2-170. ⟨10.1051/jp4:1996223⟩
Among different orientation relationships between rhomboedral μ precipitates and the γ-γ' two-phase medium of a nickel base superalloy, one is found appropriate for the observation of the heterointerface by high resolution electron microscopy. Mis
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1de0721fd1d5964d1ee0300760712f2
https://doi.org/10.1051/jp4:1996223
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