Ti-Cu-Zr-Fe-Sn-Si-Ag-Pd Bulk Metallic Glasses with Potential for Biomedical Applications

• Published in: Metallurgical and materials transactions. A, Physical metallurgy and materials science Vol. 52; no. 5; pp. 1559 - 1567
• Main Authors: Wang, Chenhe, Hua, Nengbin, Liao, Zhenlong, Yang, Wei, Pang, Shujie, Liaw, Peter K., Zhang, Tao
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2021; Springer Nature B.V
• Subjects: Aerospace materials; Amorphous materials; Biocompatibility; Biomedical materials; Cell adhesion; Characterization and Evaluation of Materials; Chemistry and Materials Science; Compressive properties; Copper; Corrosion potential; Corrosion resistance; Electrodes; Engineering; Experiments; Glass; Innovations in High Entropy Alloys and Bulk Metallic Glasses in Honor of Peter K. Liaw; Iron; Laboratories; Materials Science; Mechanical properties; Metallic glasses; Metallic Materials; Modulus of elasticity; Nanotechnology; Palladium; Pitting (corrosion); Pitting potential; Plastic deformation; Silicon; Silver; Structural Materials; Surfaces and Interfaces; Surgical implants; Thin Films; Tin; Titanium alloys; Titanium base alloys; Topical Collection: Innovations in High Entropy Alloys and Bulk Metallic Glasses
• ISSN: 1073-5623; 1543-1940
• DOI: 10.1007/s11661-021-06183-y

Ti 47 Cu 38− x Zr 7.5 Fe 2.5 Sn 2 Si 1 Ag 2 Pd x ( x = 1, 2, 3, and 4 atomic percent, at. pct) bulk metallic glasses (BMGs) with potential for biomedical applications were fabricated by copper-mold casting. The Ti-based BMGs exhibited high glass-forming ability (GFA) with critical diameters of 4 to 5 mm and a supercooled liquid region over 50 K, though the high contents of Pd slightly decreased the GFA. The additions of 2 and 3 at. pct Pd benefited the improvement of plasticity, and the resultant BMGs showed the relatively low Young’s modulus of about 100 GPa, high compressive strengths of 2174 to 2340 MPa, and compressive plastic strain of around 4 pct. The addition of Pd also decreased the passive current density and increased the pitting potential of the Ti-based BMGs in the Hank’s solution, leading to the enhanced bio-corrosion resistance of the BMGs. Furthermore, the cell adhesion, viability, and proliferation behaviors revealed that the present Ti-based BMGs possess as good biocompatibility as that of the Ti-6Al-4V alloy. These results demonstrated the potential of the Ti-Cu-Zr-Fe-Sn-Si-Ag-Pd BMGs as biomedical materials.