NickelMaghrebV1, France, Analysis, bibRecord, 000263

X-ray diffraction and Mössbauer studies of nanocrystalline Fe-Ni alloys prepared by mechanical alloying

Identifieur interne : 000263 ( France/Analysis ); précédent : 000262; suivant : 000264

X-ray diffraction and Mössbauer studies of nanocrystalline Fe-Ni alloys prepared by mechanical alloying

Auteurs : A. Djekoun [Algérie] ; B. Bouzabata [Algérie] ; A. Otmani [Algérie] ; J. M. Greneche [France]

Source :

Catalysis today [ 0920-5861 ] ; 2004.

RBID : Pascal:04-0236080

Descripteurs français

Pascal (Inist)
- Diffraction RX, Alliage mécanique, Spectrométrie Mössbauer.

English descriptors

KwdEn :
- Mechanical alloying, Moessbauer spectrometry, X ray diffraction.

Abstract

Mechanical alloying is a powder metallurgy processing technique involving cold welding, fracturing, and rewelding of powder particles in a high-energy ball mill. Mechanical alloying is a non-equilibrium process for materials synthesis. It has been used to obtain nanocrystalline binary Fe-Ni system. Elemental powders of iron and nickel (Fe-50 at.% Ni) have been mixed in a planetary mill. The structural effects of mechanical alloying of powders were investigated by scanning electron microscopy, X-ray diffraction analysis and Mossbauer spectroscopy. It is observed a gradual formation of mixture of phases as fcc (γ) with a nanoscale grain size. In addition, as the average grain size is decreased with a progressive enlargement of peaks of X-ray diffraction, a paramagnetic phase appears after 48 h of ball milling detected by Mössbauer spectroscopy.

Affiliations:

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

to stream PascalFrancis, to step Corpus: 000354
to stream PascalFrancis, to step Curation: 000087
to stream PascalFrancis, to step Checkpoint: 000331
to stream Main, to step Merge: 000917
to stream Main, to step Curation: 000896
to stream Main, to step Exploration: 000896
to stream France, to step Extraction: 000263

Links to Exploration step

Pascal:04-0236080

Le document en format XML

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<front><div type="abstract" xml:lang="en">Mechanical alloying is a powder metallurgy processing technique involving cold welding, fracturing, and rewelding of powder particles in a high-energy ball mill. Mechanical alloying is a non-equilibrium process for materials synthesis. It has been used to obtain nanocrystalline binary Fe-Ni system. Elemental powders of iron and nickel (Fe-50 at.% Ni) have been mixed in a planetary mill. The structural effects of mechanical alloying of powders were investigated by scanning electron microscopy, X-ray diffraction analysis and Mossbauer spectroscopy. It is observed a gradual formation of mixture of phases as fcc (γ) with a nanoscale grain size. In addition, as the average grain size is decreased with a progressive enlargement of peaks of X-ray diffraction, a paramagnetic phase appears after 48 h of ball milling detected by Mössbauer spectroscopy.</div>
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X-ray diffraction and Mössbauer studies of nanocrystalline Fe-Ni alloys prepared by mechanical alloying

X-ray diffraction and Mössbauer studies of nanocrystalline Fe-Ni alloys prepared by mechanical alloying

Source :

Descripteurs français

English descriptors

Abstract

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

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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