Hierarchical surface patterning of Ni- and Be-free Ti- and Zr-based bulk metallic glasses by thermoplastic net-shaping
Research output: Contribution to journal › Article › Research › peer-review
Authors
Organisational units
External Organisational units
- Erich Schmid Institute of Materials Science
- Leibniz Institute for Solid State and Materials Research, Dresden
- Eidgenössische Technische Hochschule Zürich
- Fraunhofer Institute for Ceramic Technologies and Systems IKTS
- Politehnica University of Timisoara
Abstract
In order to establish a strong cell-material interaction, the surface topography of the implant material plays an important role. This contribution aims to analyze the formation kinetics of nickel and beryllium-free Ti- and Zr-based Bulk Metallic Glasses (BMGs) with potential biomedical applications. The surface patterning of the BMGs is achieved by thermoplastic net-shaping (TPN) into anisotropically etched cavities of silicon chips. The forming kinetics of the BMG alloys is assessed by thermal and mechanical measurements to determine the most suitable processing temperature and time, and load applied. Array of pyramidal micropatterns with a tip resolution down to 50 nm is achievable for the Zr-BMG, where the generated hierarchical features are crucial for surface functionalization, acting as topographic cues for cell attachment. The unique processability and intrinsic properties of this new class of amorphous alloys make them competitive with the conventional biomaterials.
Details
Original language | English |
---|---|
Pages (from-to) | 398-405 |
Number of pages | 8 |
Journal | Materials science and engineering C (Biomimetic and supramolecular systems) |
Volume | 73.2017 |
Issue number | 1 April |
Early online date | 21 Dec 2016 |
DOIs | |
Publication status | Published - 1 Apr 2017 |