Mechanically activated synthesis studied by X-ray diffraction in the Fe–Al system

Charlot, F.; Gaffet, Éric; Zeghmati, B.; Bernard, Frédéric; Nièpce, J.C.

doi:10.1016/s0921-5093(98)01017-x

Cited by 132 publications

(70 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…584 Such a MASHS process has been successfully used to obtain various nanocrystalline compounds 584b,c such as FeAl, [594][595][596][597][598] MoSi 2 , 599 604,609b The effect of mechanical activation on the combustion synthesis of NbAl 3 has been more recently investigated by Neto and Da Rocha. 610 As milling time is increased, the ignition temperature is decreased to temperatures below the melting point of aluminum, going from 850 to 500 1C.…”

Section: Self-sustaining Reactionsmentioning

confidence: 99%

Hallmarks of mechanochemistry: from nanoparticles to technology

et al. 2013

View full text Add to dashboard Cite

The aim of this review article on recent developments of mechanochemistry (nowadays established as a part of chemistry) is to provide a comprehensive overview of advances achieved in the field of atomistic processes, phase transformations, simple and multicomponent nanosystems and peculiarities of mechanochemical reactions. Industrial aspects with successful penetration into fields like materials engineering, heterogeneous catalysis and extractive metallurgy are also reviewed. The hallmarks of mechanochemistry include influencing reactivity of solids by the presence of solid-state defects, interphases and relaxation phenomena, enabling processes to take place under non-equilibrium conditions, creating a well-crystallized core of nanoparticles with disordered near-surface shell regions and performing simple dry time-convenient one-step syntheses. Underlying these hallmarks are technological consequences like preparing new nanomaterials with the desired properties or producing these materials in a reproducible way with high yield and under simple and easy operating conditions. The last but not least hallmark is enabling work under environmentally friendly and essentially waste-free conditions (822 references).

show abstract

Section: Self-sustaining Reactionsmentioning

confidence: 99%

Hallmarks of mechanochemistry: from nanoparticles to technology

et al. 2013

View full text Add to dashboard Cite

show abstract

“…2B). Here typical signals for bcc Fe (110) (200) (211) (220) (310) [15] can be found accompanied by additional ones which are recognized as characteristic for hexagonal Co (100) (002) (102), and fcc Ni (111) (200) (220) (311) [16][17][18].…”

Section: Resultsmentioning

confidence: 99%

Magnetic nanowires (Fe, Fe-Co, Fe-Ni) – magnetic moment reorientation in respect of wires composition

2015

View full text Add to dashboard Cite

Abstract. Magnetic nanowires of Fe, Fe-Co, and Fe-Ni alloy and layered structure were prepared by electrochemical alternating current (AC) deposition method. The morphology of the nanowires in and without the matrix was studied by energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and X-ray diffraction (XRD), respectively. The wires either show strong dependence on the combination of elements deposition (alloy or layered) or chemical composition (Co or Ni). The magnetic properties of the nanostructures were determined on the basis of Mössbauer spectroscopy (MS).

show abstract

“…The preparation process of Fe 100jx Al x powders studied in the present paper is supposed to be non-equilibrium. It has been proven in [12] that MA prior to the SHS process increases residual lattice distortion and possible ion substitution occurred between interacting Fe and Al particles. So, it could be suggested that such pre-existing disorder may have affected the final defect structure of B2 FeAl.…”

Section: Resultsmentioning

confidence: 99%

Atomic Arrangement in B2 FeAl Prepared by Self-Propagated High-Temperature Synthesis at Varying Al Content and Annealing

Fedotova¹,

Ilyuschenko

Talako

et al. 2005

Hyperfine Interact

View full text Add to dashboard Cite

Atomic arrangement in B2 FeAl prepared by self-propagated high temperature synthesis (SHS) as a function of Al concentration and annealing temperature has been studied by 57 Fe Mössbauer spectroscopy (MS) and X-ray diffraction (XRD). The increase of B2 FeAl isomer shift (IS) and lattice parameter (a) with Al concentration in the whole concentration range has been detected. This may originate from the formation of Al antisite atoms. Calculation of s-electron populations against number of Al antisites using a cluster approach and MO LCAO method supported this assumption. Annealing resulted in atomic rearrangements both in near-stoichiometric and Al-rich B2 FeAl.

show abstract

Mechanically activated synthesis studied by X-ray diffraction in the Fe–Al system

Cited by 132 publications

References 26 publications

Hallmarks of mechanochemistry: from nanoparticles to technology

Hallmarks of mechanochemistry: from nanoparticles to technology

Magnetic nanowires (Fe, Fe-Co, Fe-Ni) – magnetic moment reorientation in respect of wires composition

Atomic Arrangement in B2 FeAl Prepared by Self-Propagated High-Temperature Synthesis at Varying Al Content and Annealing

Contact Info

Product

Resources

About