The Effects of Chemical Composition on Soft Magnetic Materials Behaviour

Abstract

The main aim of the presented work was to study the effects of chemical composition on the magnetic properties (in terms of B-H characteristics) of an insulated iron powder compound with various addition of the aluminium alloy (0, 5 and 10 wt%). The magnetic properties of the powder were significantly influenced by density and "sintering" effects. The addition of aluminium alloy maintaining suitable values of coercive force, remanence and core losses; this makes the modified insulated iron powder compound a promising soft magnetic material in several applications.

Effect of Cu Addition on Soft Magnetic Properties of Fe–Zr–Si Amorphous Alloy

“…Higher coercivity is due to higher residual stress, and heat treatment relieves stress to lower the coercivity. 14) Increased coercivity or decreased permeability with longer heat treatment is reportedly related to an increase in the volume fraction of crystalline ¡-Fe or increased average grain size. ¹1 for the sample with 1.5 at% Cu.…”

Effect of Granulometry and Oxygen Content on SMC Magnetic Properties

“…Dealing with permanent magnets, the use of NdFeB bonded magnets in place of ferrites and, in some occasions, of NdFeB sintered magnets, permits to obtain magnets in complex net shapes with very good magnetic characteristics [7], [8]. Considering the soft magnetic part of electrical machines circuits, laminated steels can be replaced by Soft Magnetic Composites materials commonly known as SMC [9], [10]. In general SMCs are made by very pure iron grains, coated and insulated by a layer, which can be of organic or inorganic typology.…”

“…Several researches have been carried out by the Authors on the aforementioned materials, with promising results both in terms of magnetic and mechanical properties [19]- [21]. The effect of chemistry and processing parameters on the performances of SMC materials have been evaluated in [22]- [24]. However a study of the effect of granulometry and oxygen content onto the characteristics of SMCs does not seem to be present in literature.…”

The Effect of Cryo-Rolling and Annealing on Magnetic Properties in Non-Oriented Electrical Steel

“…Some important parameters are the relative permeability, the coercivity, the saturation magnetization, and the electrical conductivity [1][2][3].…”