In situ hot stage transmission electron microscopy observations of nanocrystal formation in a Co65Si15B14Fe4Ni2 amorphous magnetic alloy

A study of non-isothermal primary crystallization kinetics and soft magnetic property of Co65Fe4Ni2Si15B14 amorphous alloy

“…This is consistent with the research in Ref. [18], i.e. crystallites of cubic (fcc) and hexagonal hcp-Co, of Co 2 B and Co 3 B.…”

Influence of thermal treatment on microstructure of Fe75Ni2Si8B13C2 amorphous alloy

“…Their good soft magnetic properties are mainly determined by magneto-elastic and annealing-induced anisotropies [1], and they are also characterized by good mechanical properties, high electrical resistivity and high corrosion resistance [2]. Addition of metalloid amorphizers like B, Si, P or C and the substitution of Fe by Co or Ni (or a mixture of both) enhance their glass forming ability [3,4], while elevated temperature or prolonged performance could induce a transformation into a crystalline state, which could lead to a loss of their advantageous physical properties [5], limiting them to single-use applications. On the other hand, the magnetic properties of amorphous Fe-based alloys can improve significantly after crystallization, if nanocrystalline phases are formed [6,7], producing functional materials with targeted properties.…”

Influence of thermal treatment on structure and microhardness of Fe75Ni2Si8B13C2 amorphous alloy

“…Their good soft magnetic properties are mainly determined by magneto-elastic and annealing-induced anisotropies [1], and they are also characterized by high corrosion resistance and good mechanical properties [2], making them suitable for use in a variety of applications, such as power devices [3,4], information handling technology, magnetic sensors [5] and anti-theft security systems [6]. Addition of metalloid amorphizers like B, Si, P or C and the substitution of Fe by Co or Ni (or a mixture of both) enhance their glass forming ability [7,8], while elevated temperature or prolonged performance could induce a transformation into a crystalline state, which could lead to a loss of their advantageous physical properties [9], limiting them to singleuse applications. On the other hand, the magnetic properties of amorphous Fe-based alloys can improve significantly after crystallization, if nanocrystalline phases are formed [10,11], producing functional materials with targeted properties.…”