Abstract
The necessity of using theory of fractals — self-similar sets of fractional dimension — for analysis of the processes occurring in soft magnetic powder materials (SMPM) of the Fe-P alloying system which determine a body of their magnetic properties is shown. Flow diagrams for SMPM production, differing in the degree of deformation and thermal impact on the consolidating powder material of the Fe-P alloying system, methodology and results of magnetic measurements are considered. The technique of studying SMPM surface topography with a scanning probe microscope, providing a link between the length of the scan line L in a desired section, distance between the scanning point R in the same section, scaling parameters and fractal dimension D are presented, as well as the results of three-dimensional surface reconstruction and scanning data processing. The revealed features of formation of the magnetic properties of SMPM attributed to the history of their production, the use of proven methods of measuring the magnetic properties of soft magnetic materials obtained by the proved technology used in powder metallurgy, demonstrated the possibility of using theory of fractals in production of the materials with desired properties to form a link between the technological features of the manufacture, fractal structure and magnetic properties of SMPM through determination of the topographic properties and geometric characteristics of the surface.
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