Synthesis and characterization of high-energy ball milled nanostructured Fe50Ni50
Identifieur interne : 000202 ( France/Analysis ); précédent : 000201; suivant : 000203Synthesis and characterization of high-energy ball milled nanostructured Fe50Ni50
Auteurs : A. Djekoun [Algérie] ; A. Otmani [Algérie] ; B. Bouzabata [Algérie] ; L. Bechiri [Algérie] ; N. Randrianantoandro [France] ; J. M. Greneche [France]Source :
- Catalysis today [ 0920-5861 ] ; 2006.
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- Pascal (Inist)
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Abstract
Mechanical alloying is a non-equilibrium process for materials synthesis. It has been used to obtain nanocrystalline binary system FeNi. Fe and Ni elemental powders have been ball milled in a planetary mill (Pulverisette 7, Fritsch) for various times up to several hours. The morphology of the powders was examined using scanning electron microscopy (SEM). X-ray diffraction (XRD) has been employed to follow the structural evolution during the ball milling process. The X-ray patterns were analysed by the MAUD procedure, which is based on the Rietveld method combined with a Fourier analysis, well adapted for broadened diffraction peaks. The grain size was found to be about 5 nm and the residual strain was about 0.021% after 322 h of milling. The as-milled samples, characterized by Mössbauer spectroscopy (MS) contain a mixture of a (bcc) and γ (fcc) phases after 48 h of ball milling.
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Greneche</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratoire de Physique de l'Etat Condensé, UMR CNRS 6087, Université du Maine</s1><s2>72085 Le Mans</s2><s3>FRA</s3><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Pays de la Loire</region><settlement type="city">Le Mans</settlement></placeName><orgName type="university">Université du Maine</orgName></affiliation></author></analytic><series><title level="j" type="main">Catalysis today</title><title level="j" type="abbreviated">Catal. today</title><idno type="ISSN">0920-5861</idno><imprint><date when="2006">2006</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Catalysis today</title><title level="j" type="abbreviated">Catal. today</title><idno type="ISSN">0920-5861</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Ball mill</term><term>Characterization</term><term>Energy</term><term>Heterogeneous catalysis</term><term>Iron Oxides</term><term>Mechanical alloying</term><term>Moessbauer spectrometry</term><term>Nanostructure</term><term>Nickel Oxides</term><term>Synthesis</term><term>Transition metal</term><term>Transition metal Compounds</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Synthèse</term><term>Caractérisation</term><term>Energie</term><term>Broyeur boulet</term><term>Nanostructure</term><term>Alliage mécanique</term><term>Spectrométrie Mössbauer</term><term>Catalyse hétérogène</term><term>Fer Oxyde</term><term>Nickel Oxyde</term><term>Métal transition</term><term>Métal transition Composé</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Mechanical alloying is a non-equilibrium process for materials synthesis. It has been used to obtain nanocrystalline binary system FeNi. Fe and Ni elemental powders have been ball milled in a planetary mill (Pulverisette 7, Fritsch) for various times up to several hours. The morphology of the powders was examined using scanning electron microscopy (SEM). X-ray diffraction (XRD) has been employed to follow the structural evolution during the ball milling process. The X-ray patterns were analysed by the MAUD procedure, which is based on the Rietveld method combined with a Fourier analysis, well adapted for broadened diffraction peaks. The grain size was found to be about 5 nm and the residual strain was about 0.021% after 322 h of milling. The as-milled samples, characterized by Mössbauer spectroscopy (MS) contain a mixture of a (bcc) and γ (fcc) phases after 48 h of ball milling.</div></front></TEI><affiliations><list><country><li>Algérie</li><li>France</li></country><region><li>Pays de la Loire</li></region><settlement><li>Le Mans</li></settlement><orgName><li>Université du Maine</li></orgName></list><tree><country name="Algérie"><noRegion><name sortKey="Djekoun, A" sort="Djekoun, A" uniqKey="Djekoun A" first="A." last="Djekoun">A. Djekoun</name></noRegion><name sortKey="Bechiri, L" sort="Bechiri, L" uniqKey="Bechiri L" first="L." last="Bechiri">L. Bechiri</name><name sortKey="Bouzabata, B" sort="Bouzabata, B" uniqKey="Bouzabata B" first="B." last="Bouzabata">B. Bouzabata</name><name sortKey="Otmani, A" sort="Otmani, A" uniqKey="Otmani A" first="A." last="Otmani">A. Otmani</name></country><country name="France"><region name="Pays de la Loire"><name sortKey="Randrianantoandro, N" sort="Randrianantoandro, N" uniqKey="Randrianantoandro N" first="N." last="Randrianantoandro">N. Randrianantoandro</name></region><name sortKey="Greneche, J M" sort="Greneche, J M" uniqKey="Greneche J" first="J. M." last="Greneche">J. M. Greneche</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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