Hierarchical surface patterning of Ni- and Be-free Ti- and Zr-based bulk metallic glasses by thermoplastic net-shaping

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

Autoren

  • Baran Sarac
  • Supriya Bera
  • Sascha Balakin
  • Mihai Stoica
  • Mariana Calin

Organisationseinheiten

Externe Organisationseinheiten

  • Erich-Schmid-Institut für Materialwissenschaft der Österreichischen Akademie der Wissenschaften
  • IFW Dresden
  • ETH Zürich
  • Fraunhofer-Institut für Keramische Technologien und Systeme IKTS Hermsdorf Thüringen
  • 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

OriginalspracheEnglisch
Seiten (von - bis)398-405
Seitenumfang8
FachzeitschriftMaterials science and engineering C (Biomimetic and supramolecular systems)
Jahrgang73.2017
Ausgabenummer1 April
Frühes Online-Datum21 Dez. 2016
DOIs
StatusVeröffentlicht - 1 Apr. 2017