Microstructural evolution of Al–Fe powder mixtures during high-energy ball milling

Cardellini, F.; Contini, V.; Gupta, Ratnesh; Mazzone, G.; Montone, A.; Perin, Antonio; Prìncìpí, G.

doi:10.1023/a:1004388732126

Cited by 80 publications

(54 citation statements)

References 9 publications

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“…This conclusion is supported by EDAX results which show that the average Fe/Al concentration does not exceed 1:2.6. The formation of Fe 2 Al 5 phase has been observed in Al-rich Fe-Al systems prepared by other non-equilibrium process also [7,14].…”

Section: Resultsmentioning

confidence: 85%

Mössbauer and SEM study of Fe–Al film

et al. 2006

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Fe-Al alloy with Fe/Al ratio of 3:1 was first prepared by argon arc melting. It was subsequently coated on glass slide and cellophane tape using an electron beam gun system to have a thickness of 2,000 Å. X-ray diffraction spectrum of the coated sample indicates a definite texture for the film with a preferential growth along the Fe(110) plane. SEM micrographs of the film showed the presence of nano islands of nearly 3×10 12 /m 2 surface density. Composition of different parts of the film was determined using EDAX. Room temperature Fe-57 Mössbauer spectrum of coated sample showed the presence a quadrupole doublet with a splitting of 0.46 mm/s, which is typical of Al-rich iron compounds. MOKE study shows an in-plane magnetic moment.

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Section: Resultsmentioning

confidence: 85%

Mössbauer and SEM study of Fe–Al film

et al. 2006

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“…Many works have been reported on the synthesis of FeAl alloys by different kinds of planetary ball mill systems (Low-energy horizontal [14,15], SPEX 8000D [16,17,19,20], High-energy planetary [18,21]); however, to our knowledge, no reports on the elaboration of FeAl compounds by using the vario-planetary high energy ball mill (Fritsch P4) have been found in the literature. It is known that the high energy planetary ball mill (Fritsch P4) exhibits the particularity to control separately the rotation speeds of the main disk () and the vials (Ω) and consequently the milling mode.…”

Section: Introductionmentioning

confidence: 99%

Structural, microstructural and Mössbauer studies of nanocrystalline Fe_100-xAl_xpowders elaborated by mechanical alloying

Boukherroub

Guittoum

Souami

et al. 2012

EPJ Web of Conferences

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Abstract. Nanocrystalline Fe 100-x Al x powders (x= 25, 30, 34 and 40 at %) were prepared by the mechanical alloying process using a vario-planetary high-energy ball mill for a milling time of 35 h. The formation and physical properties of the alloys were investigated as a function of Al content by means of X-ray diffraction, scanning electron microscopy (SEM), energy dispersive X-ray and Mössbauer spectroscopy. For all Fe 100-x Al x samples, the complete formation of bcc phase was observed after 35 h of milling. As Al content increases, the lattice parameter increases, whereas the grain size decreases from 106 to 12 nm. The powder particle morphology for different compositions was observed by SEM. The Mössbauer spectra were adjusted with a singlet line and a sextet containing two components. The singlet was attributed to the formation of paramagnetic A2 disordered structure rich with Al. About the sextet, the first component indicated the formation of Fe clusters/ Fe-rich phases; however, the second component is characteristic of disordered ferromagnetic phase.

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“…Many of these studies [7][8][9][10][11][12] have concentrated on the Al rich end of the phase diagram and have reported the formation of fcc Al-Fe solid solutions which are paramagnetic at room temperature. On the Fe rich side, the behaviour near the equiatomic composition [13][14][15][16][17] and the structural and magnetic properties of specific compositions [18][19][20][21][22][23][24][25] as well as a range of compositions [3,[26][27][28] have been investigated. However, most of these studies report results of systems in which the alloying process is complete.…”

Section: Introductionmentioning

confidence: 99%

Mössbauer study of incompletely alloyed nanocrystalline Fe100 − x Al x prepared by high energy ball milling

2007

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Mechanically alloyed Fe 100−x Al x powders, with 20≤x≤90, have been studied by X-ray diffraction and room temperature 57 Fe Mössbauer spectroscopy. The milling time was chosen such that complete alloying does not take place. For a fixed milling time of 10 h, the rate of alloying was seen to increase exponentially with increase in Fe content. Mössbauer spectra of all the samples consist of a broad magnetic sextet and a quadrupole doublet. The isomer shifts and quadrupole splitting of the doublets are typical of Al-rich, Fe-Al alloys. The area under the quadrupole doublet is a maximum for x=66. Analysis of the Mössbauer spectra indicates the formation off-stoichiometric Fe 3 Al phase for x<66, while the formation of Fe clusters is largely responsible for the magnetic hyperfine component in x≥66 compositions.

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Microstructural evolution of Al–Fe powder mixtures during high-energy ball milling

Cited by 80 publications

References 9 publications

Mössbauer and SEM study of Fe–Al film

Mössbauer and SEM study of Fe–Al film

Structural, microstructural and Mössbauer studies of nanocrystalline Fe_100-xAl_xpowders elaborated by mechanical alloying

Mössbauer study of incompletely alloyed nanocrystalline Fe100 − x Al x prepared by high energy ball milling

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Microstructural evolution of Al–Fe powder mixtures during high-energy ball milling

Cited by 80 publications

References 9 publications

Mössbauer and SEM study of Fe–Al film

Mössbauer and SEM study of Fe–Al film

Structural, microstructural and Mössbauer studies of nanocrystalline Fe100-xAlxpowders elaborated by mechanical alloying

Mössbauer study of incompletely alloyed nanocrystalline Fe100 − x Al x prepared by high energy ball milling

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Structural, microstructural and Mössbauer studies of nanocrystalline Fe_100-xAl_xpowders elaborated by mechanical alloying