Berlin 2024 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 36: Liquid and Amorphous Materials I

MM 36.5: Vortrag

Mittwoch, 20. März 2024, 12:45–13:00, C 243

Thermoplastic-patterned Ni-free Ti-based bulk metallic glass for biomedical research and its processing tolerance — Fei-Fan Cai^1,2, Andreu Blanquer³, Miguel Brito Costa⁴, Lukas Schweiger¹, Baran Sarac², A. Lindsay Greer⁴, Jan Schroers⁵, Christian Teichert¹, Carme Nogues³, •Florian Spieckermann¹, and Jürgen Eckert^1,2 — ¹Montanuniversität Leoben, Austria — ²Austrian Academy of Sciences, Austria — ³Universitat Autonoma de Barcelona, Spain — ⁴University of Cambridge, UK — ⁵Yale University, USA

The advantageous mechanical properties and exceptional biocompatibility of Ni-free Ti-based bulk metallic glasses (BMGs) make them promising materials for biomedical applications. The glassy nature of BMGs allows them to be shaped and patterned via thermoplastic forming (TPF). The first part of this talk demonstrates the versatility of the TPF technique on Ti40Zr10Cu34Pd14Sn2 BMGs to create highly ordered patterns in micro- and nano-scales and a hierarchical structure integrating both patterns on one surface. The hierarchical structure fabricated by a two-step TPF process integrates 400 nm diameter hexagonal close-packed protrusions on 2.5 *2.5 µ m² square protuberances and retains the beneficial mechanical properties of the as-cast materials. The second part of this talk focuses on the biocompatibility of Ti40Zr10Cu34Pd14Sn2 BMGs with four surface topographies (flat, micro-patterned, nano-patterned, and hierarchical-structured surfaces) using Saos-2 cell lines.

Keywords: biomedical; metallic-glass; titanium; hierarchical; nano-pattern