Formation of ball-milled Fe–Mo nanostructured powders

Magnetic properties of nanostructured Fe92P8 powder mixture

“…The paramagnetic doublet can be attributed to the FeP phosphide phase and the magnetic sites (1)(2)(3)(4) can be assigned to the three non-equivalent positions of Fe atoms in the Fe 3 P tetragonal structure. The hyperfine parameters (B 1 = 30.0 T and IS 1 = 0.03 mm/s; B 2 = 33.3 T and IS 2 = 0.01 mm/s) of the ␣-Fe indicate the presence of various types of atomic Fe neighbouring.…”

“…The preparation of these materials involved several techniques in particular mechanical alloying of crystalline elemental powders which has been applied to a large number of binary systems for example, Fe-Co [1][2][3], Fe-Mo [4], Fe-B [5] and Fe-C [6,7]. Several studies of the alloy formation process during mechanical alloying have lead to conflicting conclusions such as the interdiffusion of elements, the interactions on interface boundaries and/or the diffusion of solute atoms in the Fe matrix.…”

Thermal Stability of the Nanostructured Powder Mixtures Prepared by Mechanical Alloying

“…corresponds to the ratio between the area under the peak of the isothermal DSC trace, at different times, and the total area. Such analysis was conducted on the phase transformation mechanisms in many mechanically alloyed powders since the milling process occurs at ambient temperature for different milling durations [26][27][28][29][30][31]. If the Kolmogorov-Johnson-Mehl-Avrami analysis is valid, the value of should not change with either the volume fraction transformed, V or the temperature of transformation.…”

“…The kinetics of Mo dissolution into the α-Fe matrix of the Fe-6Mo mixture has been deduced from the XRD analysis by following the evolution of the (110) diffraction peak intensity of the unmixed Mo as a function of milling time [26]. Since the milling process occurs at room temperature, one can suppose that the temperature is constant.…”

Structural study of nanocrystalline Fe–Co–Nb–B alloys prepared by mechanical alloying

“…Nanocrystalline soft-magnetic alloys have received much attention as advanced materials with improved mechanical and physical properties. In the last decades, considerable attention has been devoted to Fe-based nanostructured alloys because of their unusual mechanical and magnetic properties which stem from the refinement of the crystallite size to the nanometric scale and from the enhanced density of grain boundaries [2][3][4][5][6].…”