Nanocrystalline (Fe,Co,Ni)86B14 soft magnetic alloys prepared by ultra-rapid annealing

A Review of Fe‐Based Amorphous and Nanocrystalline Alloys: Preparations, Applications, and Effects of Alloying Elements

“…Once the alloy fails to form an amorphous structure, it will lose its unique good properties, so this kind of nonmetallic element with a small atomic radius is essential. [ 36 ] B is a core constituent element in almost all types of amorphous and nanocrystalline alloys, which can improve the amorphous forming ability of alloys and reduce the temperature range of primary and secondary phase precipitation. As shown in Figure , this would increase the possibility of Fe–B phase precipitation during annealing, which would suppress the motion of magnetic domain walls and worsen the soft magnetic properties of Fe‐based amorphous alloys.…”

“…In 2021, Shi studied the effects of nonmetallic elements B, C, Si, and P on amorphous alloys of Fe 83–85 (B, C, Si) 14–16 P 1 , as shown in Figure . [ 36 ] The results show that B s was mainly affected by the content of C and Si in Fe–B‐based amorphous alloy Fe 83–85 (B, C, Si) 14–16 P 1 . When Fe = 83 at%, B s decreased with the addition of Si, while the influence of C seems to be stochastic.…”

“…The higher the Fe content in the alloy, the greater the magnetic moment generated per unit volume and the higher the B s of the alloy. [35,36] Figure 2 shows the relationship between B s and Fe content in Fe-based amorphous and nanocrystalline alloys in recent years. [37] It is clear from Figure 2 that the B s of the alloy present an upward trend with increasing Fe.…”

“…It is therefore recommended that the additional amount of B in the alloy should not exceed 10 at%. [49] In 2017, Zang prepared amorphous alloy ribbons with [36] Copyright 2022, Elsevier. Reproduced with permission.…”

“…Nb, Mo, and Zr elements belong to elements with large atomic radii compared to Fe, Co, and Ni, and the order of atomic radius is R (Nb, Mo, Zr) > R (Fe, Co, Ni) > R (Si, B, C, P) . The atomic radii of Nb, [36] Copyright 2022, Elsevier. Mo, and Zr elements are obviously larger than those of other elements in the alloy.…”