6th Euro BioMAT 2021 - European Symposium on Biomaterials and Related Areas
Lecture
06.05.2021
Nanostructured Ti-13Nb-13Zr for Dental Implant Applications
LK

Lina Klinge

Klinge, L. (Speaker)¹; Siemers, C.¹
¹TU Braunschweig
Vorschau
22 Min. Untertitel (CC)

In our current study, to avoid stress shielding, the alloy Ti-13Nb-13Zr is investigated for the use as a dental implant material. This alloy belongs to the β-rich (α+β)-alloys and can be adjusted to a very low Young’s modulus (50 to 90 GPa) in case α"-martensite is present. Furthermore, the alloy doesn’t contain critical alloying elements such as aluminium or vanadium which are known to cause severe health issues. To ensure good bone cell adhesion and to avoid bacterial colonisation, the alloy should be used in a nanostructured state (grain size < 1 µm). This can be achieved by applying severe plastic deformation (SPD), e.g. by the Conform-ECAP process (see figure 1). As the elongation at rupture is insufficient after such a forming process, the alloy must be recrystallized to fulfil the requirements of ASTM F1713. After recrystallization, the strength can be increased again by precipitation hardening and/or (partial) martensite decomposition.

Abstract

Abstract

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