Enhanced Mechanical Properties, Corrosion Behavior and Bioactivity of Ti-based Bulk Metallic Glasses with Minor Addition Elements

doi:10.1007/s40195-016-0468-0

Abstract

Abstract:

In this research, corrosion behavior, mechanical properties and bioactivity of Ti-Zr-Cu-Pd-Sn bulk metallic glasses with minor addition of Au, Pt, Nb or Ta elements were investigated. The results revealed that minor additions of the elements were beneficial to enhancing mechanical properties and corrosion resistance of Ti-based bulk metallic glasses. Minor addition of the element (especially with Nb and Ta addition) results in the improvement in plastic deformation ability due to the existing of nanoparticles with a size smaller than 10 nm in glassy matrix, inhibiting the deformation of the shear bonds. Enrichments of Ti and Zr elements in oxide layer were responsible for high corrosion resistance. The bioactivity of Ti-based bulk metallic glasses was also investigated. The best combination of large plastic deformation ability, good corrosion resistance and bioactivity in Ti₄₀Zr₁₀Cu₃₃Pd₁₄Sn₂Ta₁ BMG was obtained.

Key words: Bulk metallic glass, MicrostructureAlloy designCorrosion, Mechanical behavior, Biocompatibility

Feng-Xiang Qin,Yang Zhou,Chuan Ji,Zhen-Hua Dan,Guo-Qiang Xie,Sen Yang. Enhanced Mechanical Properties, Corrosion Behavior and Bioactivity of Ti-based Bulk Metallic Glasses with Minor Addition Elements[J]. Acta Metallurgica Sinica (English Letters), 2016, 29(11): 1011-1018.

Figures/Tables 9

Fig. 1 XRD patterns of the Ti-based metallic glasses

Fig. 2 DSC a DTA b curves of the Ti-based metallic glasses

Fig. 3 Potentiodynamic polarization curves of the Ti-based metallic glasses in 0. 144 mol/L NaCl

Fig. 4 Compressive stress-strain curves of the Ti-based metallic glasses with a diameter of 2 mm

Fig. 5 Side surfaces of the compressive facture samples of Ti40Zr10Cu34Pd14Sn2a Ti40Zr10Cu33Pd14Sn2Pt1b Ti40Zr10Cu33Pd14Sn2Nb1c Ti40Zr10Cu33Pd14Sn2Ta1d BMGs with a diameter of 2.5 mm

Fig. 6 HREM images and SADs of Ti40Zr10Cu34Pd14Sn2a Ti40Zr10Cu33Pd14Sn2Pt1b Ti40Zr10Cu33Pd14Sn2Nb1c Ti40Zr10Cu33Pd14Sn2Ta1d BMGs with a diameter of 2.5 mm

Fig. 7 SEM images and EDS results of the Ti40Zr10Cu33Pd14Sn2Ta1 metallic glass after hydrothermal-electrochemical treatment a immersion in Hanks’ solution for 1 day b 4 days c, d

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