TY - JOUR
T1 - Ti-Cu-Zr-Fe-Sn-Si-Sc bulk metallic glasses with good mechanical properties for biomedical applications
AU - Liu, Ying
AU - Wang, Guan
AU - Li, Haifei
AU - Pang, Shujie
AU - Chen, Kewei
AU - Zhang, Tao
N1 - Publisher Copyright:
© 2016 Elsevier B.V. All rights reserved.
PY - 2016/9/15
Y1 - 2016/9/15
N2 - Ti-based bulk metallic glasses (BMGs) free from highly toxic elements Ni and Be and noble elements were designed and synthesized in Ti47-xCu40Zr7.5Fe2.5Sn2Si1Scx (x = 1, 2, 3 and 4 at.%) system as potential biomaterials, and the effects of Sc alloying on glass-formation and properties of the Ti-based BMGs were investigated. The Ti-based BMGs containing 2 and 3 at.% Sc exhibited high glass-forming ability (GFA) and wide supercooled liquid region, and glassy rods with a diameter of 6 mm could be prepared by tilt-pour copper-mold casting. The Ti-based BMGs possess low Young's modulus of 93-99 GPa, high yield strength of 1948-2021 MPa and specific strength of about 3.2 × 105 N m/kg and plastic strain up to 5.9% under compression, and high Vickers microhardness of 577-590 Hv. The Ti-Cu-Zr-Fe-Sn-Si-Sc glassy alloys also exhibited good bio-corrosion resistance and biocompatibility. The mechanisms for the effects of Sc addition on glass formation, mechanical properties, corrosion behaviors and biocompatibility of the Ti-based BMGs are discussed. The combination of superior GFA, good mechano- and bio-compatibility demonstrates the potential of the Ti-Cu-Zr-Fe-Sn-Si-Sc BMGs for biomedical applications.
AB - Ti-based bulk metallic glasses (BMGs) free from highly toxic elements Ni and Be and noble elements were designed and synthesized in Ti47-xCu40Zr7.5Fe2.5Sn2Si1Scx (x = 1, 2, 3 and 4 at.%) system as potential biomaterials, and the effects of Sc alloying on glass-formation and properties of the Ti-based BMGs were investigated. The Ti-based BMGs containing 2 and 3 at.% Sc exhibited high glass-forming ability (GFA) and wide supercooled liquid region, and glassy rods with a diameter of 6 mm could be prepared by tilt-pour copper-mold casting. The Ti-based BMGs possess low Young's modulus of 93-99 GPa, high yield strength of 1948-2021 MPa and specific strength of about 3.2 × 105 N m/kg and plastic strain up to 5.9% under compression, and high Vickers microhardness of 577-590 Hv. The Ti-Cu-Zr-Fe-Sn-Si-Sc glassy alloys also exhibited good bio-corrosion resistance and biocompatibility. The mechanisms for the effects of Sc addition on glass formation, mechanical properties, corrosion behaviors and biocompatibility of the Ti-based BMGs are discussed. The combination of superior GFA, good mechano- and bio-compatibility demonstrates the potential of the Ti-Cu-Zr-Fe-Sn-Si-Sc BMGs for biomedical applications.
KW - Bio-corrosion resistance
KW - Biocompatibility
KW - Biomaterials
KW - Bulk metallic glasses
KW - Mechanical properties
KW - Ti alloys
UR - https://www.scopus.com/pages/publications/84963787708
U2 - 10.1016/j.jallcom.2016.03.224
DO - 10.1016/j.jallcom.2016.03.224
M3 - 文章
AN - SCOPUS:84963787708
SN - 0925-8388
VL - 679
SP - 341
EP - 349
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -