Synthesis and characterisation of nanostructured FeCo alloys
Identifieur interne : 000A00 ( Main/Exploration ); précédent : 000999; suivant : 000A01Synthesis and characterisation of nanostructured FeCo alloys
Auteurs : H. Moumeni [Algérie] ; S. Alleg [Algérie] ; C. Djebbari [Algérie] ; F. Z. Bentayeb [Algérie] ; J. M. Greneche [France]Source :
- Journal of materials science [ 0022-2461 ] ; 2004.
Descripteurs français
- Pascal (Inist)
- Etude expérimentale, Fabrication, Alliage binaire, Alliage base fer, Cobalt alliage, Alliage base cobalt, Fer alliage, Composition chimique, Alliage mécanique, Nanocristal, Nanostructure, Poudre métallique, Poudre ultrafine, Concassage, Broyeur boulet, Broyeur satellite, Microstructure, Diffraction RX, Spectrométrie Mössbauer, Fer 57, Transformation phase, Réaction état solide, Relation fabrication structure, Alliage Fe87Co13, Co Fe, Alliage Co51Fe49, Alliage Co61Fe39, 8107W, 8120E, 6146, Mécanochimie.
English descriptors
- KwdEn :
- Ball mill, Binary alloys, Chemical composition, Cobalt alloys, Cobalt base alloys, Crushing, Experimental study, Fabrication, Fabrication structure relation, Iron 57, Iron alloys, Iron base alloys, Mechanical alloying, Mechanochemistry, Metal powder, Microstructure, Moessbauer spectroscopy, Nanocrystal, Nanostructures, Phase transformations, Planetary mill, Solid state reaction, Ultrafine powder, XRD.
Abstract
Nanocrystalline Fe(1-x)Cox (x = 0.12, 0.5, 0.6) mixtures have been prepared by mechanical alloying using a planetary ball mill under several milling conditions. The alloying process between the elemental powders and the microstructure changes of the prepared samples have been investigated using X-ray diffraction (XRD) and 57Fe Mössbauer spectrometry. The XRD patterns refinement on the mechanical alloying products according to the Rietveld method (Maud software) reveals the allotropic transformation of Co from fcc to hcp form and the progressive dissolution of Co into the α-Fe lattice as a function of both Co concentration and milling conditions. The grain size values of the obtained powders reaches a nanometer scale of about 10 nm. Mössbauer results show that the beginning of the solid state reaction between Fe and Co elemental powders depends on the milling conditions. After 24 h of milling, the average hyperfine magnetic fields values of Fe88Co12, Fe50Co50 and Fe40Co60 mixtures are consistent with a disordered and an ordered FeCo solid solution, respectively.
Affiliations:
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Moumeni</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Magnétisme et de Spectroscopie des Solides LM2S, Département de Physique, Faculté des Sciences, Université de Annaba, B.P. 12</s1><s2>23000 Annaba</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>23000 Annaba</wicri:noRegion></affiliation></author><author><name sortKey="Alleg, S" sort="Alleg, S" uniqKey="Alleg S" first="S." last="Alleg">S. Alleg</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Magnétisme et de Spectroscopie des Solides LM2S, Département de Physique, Faculté des Sciences, Université de Annaba, B.P. 12</s1><s2>23000 Annaba</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>23000 Annaba</wicri:noRegion></affiliation></author><author><name sortKey="Djebbari, C" sort="Djebbari, C" uniqKey="Djebbari C" first="C." last="Djebbari">C. Djebbari</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Magnétisme et de Spectroscopie des Solides LM2S, Département de Physique, Faculté des Sciences, Université de Annaba, B.P. 12</s1><s2>23000 Annaba</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>23000 Annaba</wicri:noRegion></affiliation></author><author><name sortKey="Bentayeb, F Z" sort="Bentayeb, F Z" uniqKey="Bentayeb F" first="F. Z." last="Bentayeb">F. Z. Bentayeb</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Magnétisme et de Spectroscopie des Solides LM2S, Département de Physique, Faculté des Sciences, Université de Annaba, B.P. 12</s1><s2>23000 Annaba</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>23000 Annaba</wicri:noRegion></affiliation></author><author><name sortKey="Greneche, J M" sort="Greneche, J M" uniqKey="Greneche J" first="J. M." last="Greneche">J. M. Greneche</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratoire de Physique de l'Etat Condensé, UMR CNRS 6087, Université du Maine, Faculté des Sciences</s1><s2>72085, Le Mans</s2><s3>FRA</s3><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Pays de la Loire</region><region type="old region">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">Journal of materials science</title><title level="j" type="abbreviated">J. mater. sci.</title><idno type="ISSN">0022-2461</idno><imprint><date when="2004">2004</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of materials science</title><title level="j" type="abbreviated">J. mater. sci.</title><idno type="ISSN">0022-2461</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Ball mill</term><term>Binary alloys</term><term>Chemical composition</term><term>Cobalt alloys</term><term>Cobalt base alloys</term><term>Crushing</term><term>Experimental study</term><term>Fabrication</term><term>Fabrication structure relation</term><term>Iron 57</term><term>Iron alloys</term><term>Iron base alloys</term><term>Mechanical alloying</term><term>Mechanochemistry</term><term>Metal powder</term><term>Microstructure</term><term>Moessbauer spectroscopy</term><term>Nanocrystal</term><term>Nanostructures</term><term>Phase transformations</term><term>Planetary mill</term><term>Solid state reaction</term><term>Ultrafine powder</term><term>XRD</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Etude expérimentale</term><term>Fabrication</term><term>Alliage binaire</term><term>Alliage base fer</term><term>Cobalt alliage</term><term>Alliage base cobalt</term><term>Fer alliage</term><term>Composition chimique</term><term>Alliage mécanique</term><term>Nanocristal</term><term>Nanostructure</term><term>Poudre métallique</term><term>Poudre ultrafine</term><term>Concassage</term><term>Broyeur boulet</term><term>Broyeur satellite</term><term>Microstructure</term><term>Diffraction RX</term><term>Spectrométrie Mössbauer</term><term>Fer 57</term><term>Transformation phase</term><term>Réaction état solide</term><term>Relation fabrication structure</term><term>Alliage Fe87Co13</term><term>Co Fe</term><term>Alliage Co51Fe49</term><term>Alliage Co61Fe39</term><term>8107W</term><term>8120E</term><term>6146</term><term>Mécanochimie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Nanocrystalline Fe<sub>(1-x)</sub>Co<sub>x</sub> (x = 0.12, 0.5, 0.6) mixtures have been prepared by mechanical alloying using a planetary ball mill under several milling conditions. The alloying process between the elemental powders and the microstructure changes of the prepared samples have been investigated using X-ray diffraction (XRD) and <sup>57</sup>Fe Mössbauer spectrometry. The XRD patterns refinement on the mechanical alloying products according to the Rietveld method (Maud software) reveals the allotropic transformation of Co from fcc to hcp form and the progressive dissolution of Co into the α-Fe lattice as a function of both Co concentration and milling conditions. The grain size values of the obtained powders reaches a nanometer scale of about 10 nm. Mössbauer results show that the beginning of the solid state reaction between Fe and Co elemental powders depends on the milling conditions. After 24 h of milling, the average hyperfine magnetic fields values of Fe<sub>88</sub>Co<sub>12</sub>, Fe<sub>50</sub>Co<sub>50</sub> and Fe<sub>40</sub>Co<sub>60</sub> mixtures are consistent with a disordered and an ordered FeCo solid solution, respectively.</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="Moumeni, H" sort="Moumeni, H" uniqKey="Moumeni H" first="H." last="Moumeni">H. Moumeni</name></noRegion><name sortKey="Alleg, S" sort="Alleg, S" uniqKey="Alleg S" first="S." last="Alleg">S. Alleg</name><name sortKey="Bentayeb, F Z" sort="Bentayeb, F Z" uniqKey="Bentayeb F" first="F. Z." last="Bentayeb">F. Z. Bentayeb</name><name sortKey="Djebbari, C" sort="Djebbari, C" uniqKey="Djebbari C" first="C." last="Djebbari">C. Djebbari</name></country><country name="France"><region name="Pays de la Loire"><name sortKey="Greneche, J M" sort="Greneche, J M" uniqKey="Greneche J" first="J. M." last="Greneche">J. M. Greneche</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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