CobaltMaghrebV1, PascalFrancis, Corpus, bibRecord, 000069

Evolution of structure, microstructure and hyperfine properties of nanocrystalline Fe50Co50 powders prepared by mechanical alloying

Identifieur interne : 000069 ( PascalFrancis/Corpus ); précédent : 000068; suivant : 000070

Evolution of structure, microstructure and hyperfine properties of nanocrystalline Fe50Co50 powders prepared by mechanical alloying

Auteurs : K. Akkouche ; A. Guittoum ; N. Boukherroub ; N. Souami

Source :

Journal of magnetism and magnetic materials [ 0304-8853 ] ; 2011.

RBID : Pascal:11-0341262

Descripteurs français

Pascal (Inist)
- Microstructure, Alliage mécanique, Broyeur boulet, Distribution concentration, Structure locale, Dépendance temps, Diffraction RX, Microscopie électronique balayage, Spectrométrie dispersive, Effet Mössbauer, Paramètre cristallin, Grosseur grain, Champ magnétique hyperfin, Nanocristal, Fer alliage, Cobalt alliage, Métal transition alliage.

English descriptors

KwdEn :
- Ball mill, Cobalt alloys, Concentration distribution, Dispersive spectrometry, Grain size, Hyperfine magnetic field, Iron alloys, Lattice parameters, Local structure, Mechanical alloying, Microstructure, Moessbauer effect, Nanocrystal, Scanning electron microscopy, Time dependence, Transition element alloys, XRD.

Abstract

Nanostructured Fe₅₀Co₅₀ powders were prepared by mechanical alloying of Fe and Co elements in a vario-planetary high-energy ball mill. The structural properties, morphology changes and local iron environment variations were investigated as a function of milling time (in the 0-200 h range) by means of X-ray diffraction, scanning electron microscopy (SEM), energy dispersive X-ray analysis and ⁵⁷Fe Mössbauer spectroscopy. The complete formation of bcc Fe₅₀Co₅₀ solid solution is observed after 100 h milling. As the milling time increases from 0 to 200 h, the lattice parameter decreases from 0.28655 nm for pure Fe to 0.28523 nm, the grain size decreases from 150 to 14 nm, while the meal level of strain increases from 0.0069% to 1.36%. The powder particle morphology at different stages of formation was observed by SEM. The parameters derived from the Mössbauer spectra confirm the beginning of the formation of Fe₅₀Co₅₀ phase at 43 h of milling. After 200 h of milling the average hyperfine magnetic field of 35 T suggests that a disordered bcc Fe-Co solid solution is formed.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A11	`01`	`1`		`@1 AKKOUCHE (K.)`
A11	`02`	`1`		`@1 GUITTOUM (A.)`
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N21				`@1 234`

Format Inist (serveur)

NO :	PASCAL 11-0341262 INIST
ET :	Evolution of structure, microstructure and hyperfine properties of nanocrystalline Fe₅₀Co₅₀ powders prepared by mechanical alloying
AU :	AKKOUCHE (K.); GUITTOUM (A.); BOUKHERROUB (N.); SOUAMI (N.)
AF :	LMMC, M'hamed Bougara University/Boumerdes 35000/Algérie (1 aut., 3 aut.); Nuclear Research Centre of Algiers, 2 Bd Frantz Fanon/BP399 Alger-Gare, Algiers/Algérie (2 aut., 4 aut.)
DT :	Publication en série; Niveau analytique
SO :	Journal of magnetism and magnetic materials; ISSN 0304-8853; Coden JMMMDC; Pays-Bas; Da. 2011; Vol. 323; No. 21; Pp. 2542-2548; Bibl. 32 ref.
LA :	Anglais
EA :	Nanostructured Fe₅₀Co₅₀ powders were prepared by mechanical alloying of Fe and Co elements in a vario-planetary high-energy ball mill. The structural properties, morphology changes and local iron environment variations were investigated as a function of milling time (in the 0-200 h range) by means of X-ray diffraction, scanning electron microscopy (SEM), energy dispersive X-ray analysis and ⁵⁷Fe Mössbauer spectroscopy. The complete formation of bcc Fe₅₀Co₅₀ solid solution is observed after 100 h milling. As the milling time increases from 0 to 200 h, the lattice parameter decreases from 0.28655 nm for pure Fe to 0.28523 nm, the grain size decreases from 150 to 14 nm, while the meal level of strain increases from 0.0069% to 1.36%. The powder particle morphology at different stages of formation was observed by SEM. The parameters derived from the Mössbauer spectra confirm the beginning of the formation of Fe₅₀Co₅₀ phase at 43 h of milling. After 200 h of milling the average hyperfine magnetic field of 35 T suggests that a disordered bcc Fe-Co solid solution is formed.
CC :	001B60A46; 001B80A07B; 001B70F80
FD :	Microstructure; Alliage mécanique; Broyeur boulet; Distribution concentration; Structure locale; Dépendance temps; Diffraction RX; Microscopie électronique balayage; Spectrométrie dispersive; Effet Mössbauer; Paramètre cristallin; Grosseur grain; Champ magnétique hyperfin; Nanocristal; Fer alliage; Cobalt alliage; Métal transition alliage
ED :	Microstructure; Mechanical alloying; Ball mill; Concentration distribution; Local structure; Time dependence; XRD; Scanning electron microscopy; Dispersive spectrometry; Moessbauer effect; Lattice parameters; Grain size; Hyperfine magnetic field; Nanocrystal; Iron alloys; Cobalt alloys; Transition element alloys
SD :	Molino bolas; Distribución concentración; Estructura local; Espectrometría dispersiva; Campo magnético hiperfino; Nanocristal
LO :	INIST-17230.354000509451620030
ID :	11-0341262

Links to Exploration step

Pascal:11-0341262

Le document en format XML

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 powders prepared by mechanical alloying</title>
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<front><div type="abstract" xml:lang="en">Nanostructured Fe<sub>50</sub>
Co<sub>50</sub>
 powders were prepared by mechanical alloying of Fe and Co elements in a vario-planetary high-energy ball mill. The structural properties, morphology changes and local iron environment variations were investigated as a function of milling time (in the 0-200 h range) by means of X-ray diffraction, scanning electron microscopy (SEM), energy dispersive X-ray analysis and <sup>57</sup>
Fe Mössbauer spectroscopy. The complete formation of bcc Fe<sub>50</sub>
Co<sub>50</sub>
 solid solution is observed after 100 h milling. As the milling time increases from 0 to 200 h, the lattice parameter decreases from 0.28655 nm for pure Fe to 0.28523 nm, the grain size decreases from 150 to 14 nm, while the meal level of strain increases from 0.0069% to 1.36%. The powder particle morphology at different stages of formation was observed by SEM. The parameters derived from the Mössbauer spectra confirm the beginning of the formation of Fe<sub>50</sub>
Co<sub>50</sub>
 phase at 43 h of milling. After 200 h of milling the average hyperfine magnetic field of 35 T suggests that a disordered bcc Fe-Co solid solution is formed.</div>
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<fC01 i1="01" l="ENG"><s0>Nanostructured Fe<sub>50</sub>
Co<sub>50</sub>
 powders were prepared by mechanical alloying of Fe and Co elements in a vario-planetary high-energy ball mill. The structural properties, morphology changes and local iron environment variations were investigated as a function of milling time (in the 0-200 h range) by means of X-ray diffraction, scanning electron microscopy (SEM), energy dispersive X-ray analysis and <sup>57</sup>
Fe Mössbauer spectroscopy. The complete formation of bcc Fe<sub>50</sub>
Co<sub>50</sub>
 solid solution is observed after 100 h milling. As the milling time increases from 0 to 200 h, the lattice parameter decreases from 0.28655 nm for pure Fe to 0.28523 nm, the grain size decreases from 150 to 14 nm, while the meal level of strain increases from 0.0069% to 1.36%. The powder particle morphology at different stages of formation was observed by SEM. The parameters derived from the Mössbauer spectra confirm the beginning of the formation of Fe<sub>50</sub>
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<s5>07</s5>
</fC03>
<fC03 i1="06" i2="3" l="ENG"><s0>Time dependence</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="3" l="FRE"><s0>Diffraction RX</s0>
<s5>08</s5>
</fC03>
<fC03 i1="07" i2="3" l="ENG"><s0>XRD</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="3" l="FRE"><s0>Microscopie électronique balayage</s0>
<s5>09</s5>
</fC03>
<fC03 i1="08" i2="3" l="ENG"><s0>Scanning electron microscopy</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Spectrométrie dispersive</s0>
<s5>10</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Dispersive spectrometry</s0>
<s5>10</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Espectrometría dispersiva</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="3" l="FRE"><s0>Effet Mössbauer</s0>
<s5>11</s5>
</fC03>
<fC03 i1="10" i2="3" l="ENG"><s0>Moessbauer effect</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="3" l="FRE"><s0>Paramètre cristallin</s0>
<s5>12</s5>
</fC03>
<fC03 i1="11" i2="3" l="ENG"><s0>Lattice parameters</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="3" l="FRE"><s0>Grosseur grain</s0>
<s5>13</s5>
</fC03>
<fC03 i1="12" i2="3" l="ENG"><s0>Grain size</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="FRE"><s0>Champ magnétique hyperfin</s0>
<s5>14</s5>
</fC03>
<fC03 i1="13" i2="X" l="ENG"><s0>Hyperfine magnetic field</s0>
<s5>14</s5>
</fC03>
<fC03 i1="13" i2="X" l="SPA"><s0>Campo magnético hiperfino</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE"><s0>Nanocristal</s0>
<s5>15</s5>
</fC03>
<fC03 i1="14" i2="X" l="ENG"><s0>Nanocrystal</s0>
<s5>15</s5>
</fC03>
<fC03 i1="14" i2="X" l="SPA"><s0>Nanocristal</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="3" l="FRE"><s0>Fer alliage</s0>
<s5>16</s5>
</fC03>
<fC03 i1="15" i2="3" l="ENG"><s0>Iron alloys</s0>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="3" l="FRE"><s0>Cobalt alliage</s0>
<s5>18</s5>
</fC03>
<fC03 i1="16" i2="3" l="ENG"><s0>Cobalt alloys</s0>
<s5>18</s5>
</fC03>
<fC03 i1="17" i2="3" l="FRE"><s0>Métal transition alliage</s0>
<s5>48</s5>
</fC03>
<fC03 i1="17" i2="3" l="ENG"><s0>Transition element alloys</s0>
<s5>48</s5>
</fC03>
<fN21><s1>234</s1>
</fN21>
</pA>
</standard>
<server><NO>PASCAL 11-0341262 INIST</NO>
<ET>Evolution of structure, microstructure and hyperfine properties of nanocrystalline Fe<sub>50</sub>
Co<sub>50</sub>
 powders prepared by mechanical alloying</ET>
<AU>AKKOUCHE (K.); GUITTOUM (A.); BOUKHERROUB (N.); SOUAMI (N.)</AU>
<AF>LMMC, M'hamed Bougara University/Boumerdes 35000/Algérie (1 aut., 3 aut.); Nuclear Research Centre of Algiers, 2 Bd Frantz Fanon/BP399 Alger-Gare, Algiers/Algérie (2 aut., 4 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Journal of magnetism and magnetic materials; ISSN 0304-8853; Coden JMMMDC; Pays-Bas; Da. 2011; Vol. 323; No. 21; Pp. 2542-2548; Bibl. 32 ref.</SO>
<LA>Anglais</LA>
<EA>Nanostructured Fe<sub>50</sub>
Co<sub>50</sub>
 powders were prepared by mechanical alloying of Fe and Co elements in a vario-planetary high-energy ball mill. The structural properties, morphology changes and local iron environment variations were investigated as a function of milling time (in the 0-200 h range) by means of X-ray diffraction, scanning electron microscopy (SEM), energy dispersive X-ray analysis and <sup>57</sup>
Fe Mössbauer spectroscopy. The complete formation of bcc Fe<sub>50</sub>
Co<sub>50</sub>
 solid solution is observed after 100 h milling. As the milling time increases from 0 to 200 h, the lattice parameter decreases from 0.28655 nm for pure Fe to 0.28523 nm, the grain size decreases from 150 to 14 nm, while the meal level of strain increases from 0.0069% to 1.36%. The powder particle morphology at different stages of formation was observed by SEM. The parameters derived from the Mössbauer spectra confirm the beginning of the formation of Fe<sub>50</sub>
Co<sub>50</sub>
 phase at 43 h of milling. After 200 h of milling the average hyperfine magnetic field of 35 T suggests that a disordered bcc Fe-Co solid solution is formed.</EA>
<CC>001B60A46; 001B80A07B; 001B70F80</CC>
<FD>Microstructure; Alliage mécanique; Broyeur boulet; Distribution concentration; Structure locale; Dépendance temps; Diffraction RX; Microscopie électronique balayage; Spectrométrie dispersive; Effet Mössbauer; Paramètre cristallin; Grosseur grain; Champ magnétique hyperfin; Nanocristal; Fer alliage; Cobalt alliage; Métal transition alliage</FD>
<ED>Microstructure; Mechanical alloying; Ball mill; Concentration distribution; Local structure; Time dependence; XRD; Scanning electron microscopy; Dispersive spectrometry; Moessbauer effect; Lattice parameters; Grain size; Hyperfine magnetic field; Nanocrystal; Iron alloys; Cobalt alloys; Transition element alloys</ED>
<SD>Molino bolas; Distribución concentración; Estructura local; Espectrometría dispersiva; Campo magnético hiperfino; Nanocristal</SD>
<LO>INIST-17230.354000509451620030</LO>
<ID>11-0341262</ID>
</server>
</inist>
</record>

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Evolution of structure, microstructure and hyperfine properties of nanocrystalline Fe50Co50 powders prepared by mechanical alloying

Evolution of structure, microstructure and hyperfine properties of nanocrystalline Fe50Co50 powders prepared by mechanical alloying

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