High performance of low cost soft magnetic materials

Abstract

The consistent interest in supporting research and development of magnetic materials during the last century is revealed in their steadily increasing market. In this work, the soft magnetic nanocrystalline FINEMET alloy was prepared with commercial purity raw materials and compared for the first time with the generally studied high purity one. The exhaustive characterization covers several diverse techniques: X-ray diffraction, Mössbauer spectroscopy, differential scanning calorimetry, differential thermal analysis and magnetic properties. In addition, a brief economic analysis is presented. For the alloys annealed at 813 K, the value of the grain size was 16 nm with 19⋅5% of Si, the coercivity was 0⋅30 A m-1 while the saturation was 1⋅2 T. These results prove that structural, magnetic and thermal properties of this material are very close to the expensive high purity FINEMET alloy, while a cost reduction of almost 98% seems highly attractive for laboratories and industry. The analysis should be useful not only for the production of FINEMETs, but for other type of systems with similar constitutive elements as well, including soft and hard magnetic materials.

Modern Advances in Magnetic Materials of Wireless Power Transfer Systems: A Review and New Perspectives

“…Due to their attractive properties [ 155 ], amorphous and nanocrystalline soft magnetic materials have become a hot research topic since their invention [ 156 ]. The maximum B s and T c characteristics of the material can be significantly enhanced by adjusting the typical element content of amorphous and nanocrystalline materials [ 157 , 158 , 159 , 160 , 161 , 162 , 163 , 164 , 165 , 166 ]. Suzuki [ 167 ] developed a FeZrB amorphous nanocrystalline duplex alloy system with high Fe content and registered it as the NANOPERM alloy.…”

Soft magnetic materials for a sustainable and electrified world

“…Yet because Ni is cheaper than Co, FeNi-based alloys have attracted recent efforts to explore their application in electric machines (57). Additionally, the modification of glassformer content in amorphous and nanocrystalline alloys has led to the optimization of other characteristics such as corrosion (58,59) and oxidation resistance (60), raw materials costs (61), and M s [up to 1.5 MA/m (62,63)].…”

Design and fabrication of a low-cost coil winding machine for slotless toroidal stators

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