Synthesis and morphological characterization of nanocrystalline powders obtained by a gas condensation method

Nanocrystalline FexNi1−x (x≤0.65) alloys formed by chemical synthesis

“…The percolation process occurring at such a low temperature can be explained by the enhancement of the diffusion coefficient verified in the disordered region of the particle and by the energy liberated during its relaxation promoted by the thermal treatment (see the DSC analyses below). The necklace-like morphology and the weld-neck formation have also been reported in the literature for annealed nanocrystalline Fe and annealed nanocrystalline Fe-Ni alloys [33]. Fig.…”

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

“…The average crystallite size becomes gradually smaller with increasing milling time with a final value of about 8 nm. This value is smaller than the 45 nm [8] and 16.5 nm [9] for the iron-nickel ultra-fine particles obtained by a gas-condensation method, with the same composition.…”

X-ray diffraction, microstructure, Mössbauer and magnetization studies of nanostructured Fe50Ni50 alloy prepared by mechanical alloying

“…Several methods including thermal evaporation [5], electrodeposition [6], gas condensation [7], rapid solidification [8] and metal plasma reaction [9] were used to prepare nanostructured FeNi materials. Among these methods, mechanical alloying (MA) is a powerful technique which allows the preparation of nanostructured FeNi alloys [10][11][12].…”