New TiZrCuPd Quaternary Bulk Glassy Alloys with Potential of Biomedical Applications

Abstract

In this paper, we have developed TiZrCuPd quaternary bulk glassy alloys which seem to be favorable for future application as biomaterials because of the absence of toxic elements such as Ni, Al and Be. A series of (TiZr)₅₀(CuPd)₅₀ bulk glassy alloys exhibit high glass-forming ability (with critical diameters of 6 and 7 mm) and relatively large supercooled liquid region (ΔT_x) of over 50 K. This alloy system follows the three empirical rules for stabilization of supercooled liquid. The thermal stability of Ti₄₀Zr₁₀Cu₃₆Pd₁₄ bulk glassy alloy was also examined in correlation with the origin for the high glass-forming ability.