CobaltMaghrebV1, Main, Exploration, bibRecord, 000B30

Mossbauer study of mechanically alloyed Fe57Cr31Co12

Identifieur interne : 000B30 ( Main/Exploration ); précédent : 000B29; suivant : 000B31

Mossbauer study of mechanically alloyed Fe57Cr31Co12

Auteurs : F.-Z. Bentayeb [Algérie] ; S. Alleg [Algérie] ; B. Bouzabata [Algérie] ; J. M. Greneche [France]

Source :

Physica status solidi. A. Applied research [ 0031-8965 ] ; 2002.

RBID : Pascal:02-0189687

Descripteurs français

Pascal (Inist)
- Effet Mössbauer, Alliage mécanique, Broyeur satellite, Broyeur boulet, Diffraction RX, Grosseur grain, Dépendance temps, Fusion, Transformation phase, Nanostructure, Poudre, Fer alliage, Matériau paramagnétique, Chrome alliage, Cobalt alliage, Alliage ternaire, Co Cr Fe, Alliage FeCrCo, 7550T, 7680.

English descriptors

KwdEn :
- Ball mill, Chromium alloys, Cobalt alloys, Grain size, Iron alloys, Mechanical alloying, Melting, Moessbauer effect, Nanostructures, Paramagnetic materials, Phase transformations, Planetary mill, Powders, Ternary alloys, Time dependence, XRD.

Abstract

Nanostructured powders of Fe₅₇Cr₃₁Co₁₂ were prepared by mechanical alloying from elemental Fe, Cr and Co powders, using a planetary ball mill type Fritsch Pulverisette 7. The powders were characterized by X-ray diffraction and ⁵⁷Fe Mossbauer spectrometry. A detailed analysis of the diffraction patterns reveals a decrease of the crystalline grain size as a function of milling time. For the first hours of milling, Mossbauer spectra are composed of a magnetic contribution and a single line. The paramagnetic component, whose relative area increases with milling time, can be attributed to paramagnetic Cr-rich clusters. The results are compared to those obtained on the same alloy prepared by conventional melting technique.

Affiliations:

Links toward previous steps (curation, corpus...)

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Le document en format XML

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Co<sub>12</sub>
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<term>Alliage mécanique</term>
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<term>Broyeur boulet</term>
<term>Diffraction RX</term>
<term>Grosseur grain</term>
<term>Dépendance temps</term>
<term>Fusion</term>
<term>Transformation phase</term>
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<term>Poudre</term>
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<front><div type="abstract" xml:lang="en">Nanostructured powders of Fe<sub>57</sub>
Cr<sub>31</sub>
Co<sub>12</sub>
 were prepared by mechanical alloying from elemental Fe, Cr and Co powders, using a planetary ball mill type Fritsch Pulverisette 7. The powders were characterized by X-ray diffraction and <sup>57</sup>
Fe Mossbauer spectrometry. A detailed analysis of the diffraction patterns reveals a decrease of the crystalline grain size as a function of milling time. For the first hours of milling, Mossbauer spectra are composed of a magnetic contribution and a single line. The paramagnetic component, whose relative area increases with milling time, can be attributed to paramagnetic Cr-rich clusters. The results are compared to those obtained on the same alloy prepared by conventional melting technique.</div>
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Mossbauer study of mechanically alloyed Fe57Cr31Co12

Mossbauer study of mechanically alloyed Fe57Cr31Co12

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri