The crystallization behavior of amorphous Fe–Sn–B ribbons

Amorphous Fe(95−x)Sn5Bx ribbons (x = 15, 17, 20) were prepared for the first time by planar-flow casting. Their thermodynamic stability and kinetics of crystallization were studied by differential thermal analysis, differential scanning calorimetry and magnetometry (thermobalance with permanent magnet). Formation of crystalline phases and their morphology were analyzed by X-ray diffraction and transmission electron microscopy. The results indicate the existence of critical composition for the transformation kinetics. The relation between the magnetic state of the material and the kinetics of crystallization was analyzed.

Research highlights▶ Amorphous Fe-Sn5-B ribbons were prepared for the first time by planar-flow casting. ▶ Their thermodynamic stability and kinetics of crystallization were studied. ▶ Formation of crystalline phases and their morphology were analyzed. ▶ The results indicate the existence of critical composition for the transformation kinetics. ▶ The relation between the magnetic state of the material and the kinetics of crystallization was analyzed. ▶ The crystallization kinetics of Fe78Sn5B17 ribbon in paramagnetic and ferromagnetic states is not the same.