Efecto del tiempo de molienda sobre la estabilidad témica del amorfo Mg50Ni50 producido mediante aleado mecáico

D. Guzmán, S. Ordoñez, D. Serafini, P. Rojas, C. Aguilar, M. Santander, L. Navea

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

1 Cita (Scopus)

Resumen

In order to study the relationship between the milling time used in the production of Mg50Ni50 amorphous alloy and its thermal stability, seven amorphous alloys were produced by milling for 20, 25, 30, 35, 40, 50 and 60 h each sample. The obtained powders were morphological and structurally characterized by scanning electron microscopy (SEM), Xray diffraction (XRD) and transmission electron microscopy (TEM), respectively. The thermal stability of amorphous alloys was study by differential scanning calorimetry (DSC). Based on the obtained results, it can be concluded that the increase in the added energy when milling for longer time causes the homogenization of the microstructure with an increase in amorphous phase, which dissolves a larger amount of nickel in its structure. Therefore, the simultaneous crystallization of the Mg2Ni and MgNi2 intermetallic compounds at 345 °C can be explained.

Título traducido de la contribuciónEffect of the milling time on thermal stability of mechanically alloyed Mg50Ni50 amorphous alloy
Idioma originalEspañol
Páginas (desde-hasta)375-383
Número de páginas9
PublicaciónRevista de Metalurgia (Madrid)
Volumen45
N.º5
DOI
EstadoPublicada - sep. 2009

Palabras clave

  • Amorphous
  • Hydrogen storage materials
  • Mechanical alloying
  • Thermal stability
  • X-ray diffraction

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