Ni- and Cu-free Zr-Al-Co-Ag bulk metallic glasses with superior glass-forming ability - Archive ouverte HAL
Article Dans Une Revue Journal of Materials Research Année : 2011

Ni- and Cu-free Zr-Al-Co-Ag bulk metallic glasses with superior glass-forming ability

N. Hua
  • Fonction : Auteur
S. Pang
  • Fonction : Auteur
Yan Li
J. Wang
  • Fonction : Auteur
Ran Li
  • Fonction : Auteur
G. Vaughan
Tao Zhang

Résumé

Ni- and Cu-free Zr-Al-Co-Ag bulk metallic glasses (BMGs) with diameters up to 20 mm were synthesized by copper mold casting. The effects of Ag alloying on the superior glass-forming ability (GFA) of Zr-Al-Co-Ag alloys were studied based on the localized atomic structure and crystallization behavior. High-energy synchrotron radiation x-ray diffraction result reveals that Ag addition in Zr-Al-Co system results in a more homogeneous local atomic structure, which could be an origin for the improved GFA of the Zr-Al-Co-Ag alloy. Crystallization products of the Zr-Al-Co-Ag glassy alloy are more complex than those of the Zr-Al-Co glassy alloy. The Zr-Al-Co-Ag BMGs free from highly toxic elements Ni and Cu exhibited a combination of superior GFA, high compressive fracture strength over 2000 MPa, low Young's modulus of 93 to 94 GPa, and good corrosion resistance in phosphate-buffered solution (PBS), inspiring their potential biomedical applications.

Domaines

Matériaux
Fichier non déposé

Dates et versions

hal-00633956 , version 1 (19-10-2011)

Identifiants

Citer

N. Hua, S. Pang, Yan Li, J. Wang, Ran Li, et al.. Ni- and Cu-free Zr-Al-Co-Ag bulk metallic glasses with superior glass-forming ability. Journal of Materials Research, 2011, 26 (4), pp.539-546. ⟨10.1557/jmr.2010.65⟩. ⟨hal-00633956⟩
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