J. Medina Medina, Ch. Rojas Ayala, J. Quispe Marcatoma and V.A. Peña Rodríguez  

 

Facultad de Ciencias Físicas, Universidad Nacional Mayor de San Marcos  

 

Abstract  

 

In the present work, we study the synthesis and characterization of Fe-Zr amorphous alloys obtained from elementary powders mixture in the nominal compositions Fe₂Zr and Fe₃Zr. From the Mössbauer spectroscopy results, we found that the amorphous alloys were almost formed in the whole sample after 12 hours of milling, for both compositions. In the case of Fe₂Zr composition 92% of Fe was incorporated in the amorphous phase after 12 hours of milling, characterized by hyperfine parameter <D>=0.37 mm/s and <d>=-0.11 mm/s, whereas 8% remain in a crystalline a-Fe phase. These results are in agreement with the one found by Goncas et. al. [1, 2], who reported the formation of Fe₂Zr amorphous after 80 hours. For the Fe₃Zr composition 89% of Fe was incorporated in the Fe₂Zr amorphous phase after 12 hours of milling, characterized by hyperfine parameter <D>=0.38 mm/s and <d>=-0.10 mm/s, whereas 11% remain in a crystalline a-Fe phase. These results were corroborating by x-ray diffraction analysis.