Results 251 to 260 of about 38,959 (296)

Neutron Diffraction Study of the in Situ Oxidation of UO₂

Inorganic Chemistry, 2009
This paper discusses uranium oxide crystal structure modifications that are observed during the low-temperature oxidation which transforms UO(2) into U(3)O(8). The symmetries and the structural parameters of UO(2), beta-U(4)O(9), beta-U(3)O(7), and U(3)O(8) were determined by refining neutron diffraction patterns on pure single-phase samples.
Desgranges, Lionel, Baldinozzi, Gianguido, Rousseau, Gurvan, Nièpce, Jean-Claude, Calvarin, Gilbert   +4 more
openaire   +3 more sources

In Situ Neutron Powder Diffraction of a Nickel Hydroxide Electrode

Chemistry of Materials, 2004
The redox processes occurring at the nickel oxyhydroxide electrodes were followed by in situ neutron diffraction. The aim was to get a deeper insight into the existing phases and the reactivity mechanisms involved in the reduction process, paying special attention to the so-called "second plateau" phenomenon, occasionally appearing during ...
Barde, F., R. Palacin, M., Chabre, Y., Isnard, Olivier, Tarascon, J.-M.   +4 more
openaire   +3 more sources

In-situ neutron diffraction investigation of Mg2FeH6 dehydrogenation

International Journal of Hydrogen Energy, 2017
Abstract In this paper we present an in-situ neutron diffraction experiment on the dehydrogenation of Mg 2 FeH 6 . Stoichiometric mixtures of 2Mg + Fe were ball milled in a hydrogen environment. After desorption, the samples were exposed to different combinations of hydrogen/deuterium at different temperatures in order to absorb hydrogen or deuterium
Julien Lang, Helmut Fritzche, Alexandre Augusto Cesario Asselli, Jacques Huot   +3 more
openaire   +1 more source

In situ neutron powder diffraction and structure determination in controlled humidities

Chemical Communications, 2009
A controlled-humidity sample environment has been constructed, allowing bulk powder samples undergoing humidity-induced phase transitions and reactions to be studied via in situ neutron diffraction. Associated developments in data collection and analysis permit this to be achieved without the use of D(2)O.
Ting, Valeska P., Henry, Paul F., Schmidtmann, Marc, Wilson, Chick C., Weller, Mark T.   +4 more
openaire   +3 more sources

In-situ Neutron Diffraction Studies of Li Batteries

ECS Meeting Abstracts, 2010
Abstract not Available.
Neeraj Sharma, Vanessa Peterson, Maxim Avdeev, Andrew Studer   +3 more
openaire   +1 more source

Solid-state synthesis of LiBD4 observed by in situ neutron diffraction

Physical Chemistry Chemical Physics, 2008
The synthesis of Li[(11)BD(4)] from LiB and D(2) (p = 180 bar) is investigated by in situ neutron diffraction. The onset of the Li[(11)BD(4)] formation is observed far below the temperatures reported so far for the reaction from the pure elements, indicative of a lower activation barrier.
Remhof A, Friedrichs O, Buchter F, Mauron P, Züttel A, Wallacher D   +5 more
openaire   +4 more sources

In situ observation of the reaction of scandium and carbon by neutron diffraction

Journal of Alloys and Compounds, 2011
Abstract The formation of scandium carbides by reaction of the elements has been investigated by in situ neutron diffraction up to 1823 K. On heating, the recrystallization of α-Sc occurs between 1000 and 1223 K. The formation of Sc 2 C and ScC (NaCl-B1 type structure) phases has been detected at 1323 and 1373 K, respectively.
Erick A. Juarez-Arellano, Bjorn Winkler, Sven C. Vogel, Anatoliy Senyshyn, Daniel R. Kammler, Miguel Avalos-Borja   +5 more
openaire   +1 more source

In situ neutron diffraction studies of martensitic transformations in NiTi

Journal de Physique IV (Proceedings), 2003
Martensitic transformations in commercial near equiatomic Ni49.5Ti (at. %) polycrystalline thick wires induced by thermal and/or mechanical loading were investigated by in-situ high-resolution neutron powder diffraction techniques with the aim to develop neutron diffraction methods of stress and phases fraction evaluation in NiTi transforming in ...
P. Sittner, P. Lukás, D. Neov, V. Novák, D. M. Toebbens   +4 more
openaire   +1 more source

Flux Growth of Cerium Nickel Gallides Studied by In Situ Neutron Diffraction

Inorganic Chemistry, 2022
Reactions of cerium and nickel in excess molten gallium were monitored by neutron diffraction during heating and cooling. The formation of binary intermediates CeGa2 and Ni2Ga3 was observed during heating. During cooling of the molten mixture from 900 °C, precipitation of BaAl4-type CeNi0.74Ga3.26 occurred at 850 °C.
Jo W. Haddock, Zach J. Barton, Keke Feng, Ryan E. Baumbach, Qiang Zhang, Susan E. Latturner   +5 more
openaire   +2 more sources