The Effects of Strain-Annealing on Tuning Permeability and Lowering Losses in Fe-Ni-Based Metal Amorphous Nanocomposites

Soft magnetic materials for a sustainable and electrified world

“…FeNibased nanocrystalline alloys share many of the benefits of FeCo-and Co-based alloys: saturation inductions and Curie temperatures suitable for power applications, low losses at high switching frequencies, tunable permeability, and improved ductility (56). 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)].…”

Nanocrystallites via Direct Melt Spinning of Fe77Ni5.5Co5.5Zr7B4Cu for Enhanced Magnetic Softness

“…Consequently, relative length‐scale proportionalities are essential in reducing coercivity, a key factor for applications in high‐frequency power electronics and electrical machines . In recent years, FINEMAT, HITPERM alloys, and nanocrystalline soft magnetic materials have been developed that share a common microstructural feature, having ferromagnetic nanocrystallites (≈10 nm) embedded in an amorphous matrix, which are considerably shorter than the correlation length, resulting in a unique combination of large magnetization, high permeability, and low core loss.…”

Finite element analysis modeling of high voltage and frequency 3-phase solid state transformers enabled by metal amorphous nanocomposites

“…Fe-Coand Co-based MANCs have recently been investigated, with Co-based alloys showing improved mechanical properties and a relatively large range of tunable permeabilities through field and strain annealing techniques. [12][13][14][15][16][17] Recently Fe-Ni MANCs 18 are reported to be of interest due to the lower Ni cost compared to Co while maintaining benefits, including mechanical properties, over Fe-based MANCs that Co-based alloys enjoy. A compositional range in Fe-Ni-based MANCs has been reported that includes saturation inductions and Curie temperatures suitable for power applications.…”

“…A compositional range in Fe-Ni-based MANCs has been reported that includes saturation inductions and Curie temperatures suitable for power applications. 18 These materials also exhibit tunable permeabilities with strain annealing, with values of l as large as 16,000 reported. 18…”

“…18 These materials also exhibit tunable permeabilities with strain annealing, with values of l as large as 16,000 reported. 18…”