| dc.description.abstract | Recently, Titanium base alloys have already widely used in medical applications, especially the bone nail, metal sutures, and bone implant because of its high biocompatibility, stability, and safety in human body. However, titanium alloys is much higher Young′s modulus than human bone. This leads to stress-shielding and causes atrophy of original bones (Because of the Young′s modulus mismatch, the surgery often failed due to stress-shielding.). In addition, we should be concerned about the durability, corrosion resistance and safety of Titanium alloys in human body. Compare to Titanium base alloys, Ti-based metallic glass has low Young’s modulus, excellence biocompatibility, low density, high elasticity resilience, and corrosion resistance. This research aims to make bulk metallic glass foam by using the Ti42Zr35Si5Sn2.5Co12.5Ta3 metallic glass because of its high glass forming ability and harmless to human body. At first, Ti42Zr35Si5Sn2.5Co12.5Ta3 alloy ingot was prepared by arc-melting, then re-melted and fabricated into MG ribbon by vacuum melt-spinning process. The MG ribbons were chopped and mechanical milled into MG powders by SPEX milling. Furthermore, the different volume fraction combinations of Ti-based MG powder and NaCl powder were mixed and hot-compressed in to bulk form at the supercooled temperature region of Ti-based MG. Finally, these Ti-based BMGFs with dimension of 12 mm in diameter and 4 mm in thickness were obtained by washing out the NaCl from the hot-compressed bulk samples by ultrasonic cleaning in water. Meanwhile, the results of this study show that the Ti-based BMGF with about 37.8 % porosity has similar value of Young′s modulus to human bones. | en_US |