|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Magnesium Technology 2017
||Biocompatible Magnesium Alloy ZNdK100 – Adaptation of Extrusion Parameters to Tailor the Mechanical Properties to Different Implant Applications
||Rainer Eifler, Florian Schäfke, Hans Jürgen Maier, Christian Klose
|On-Site Speaker (Planned)
The magnesium alloy ZNdK100 offers high corrosion resistance and biocompatibility due to low amounts of alloying elements suitable for biomedical applications. Compared with common absorbable magnesium alloys which frequently contain mischmetal, the use of neodymium as a single rare earth element aids in achieving best reproducibility of the degradation behavior while improving the ductility, leading to fracture strains of ~30%. Thus, stents made from this alloy allowed dilatation without failure. The alloy’s strength however turned out to be low (~100MPa). Recent investigations proved that the material’s strength can be significantly increased by an adaptation of the extrusion parameters, such as billet temperature and extrusion ratio, which wield major influence on recrystallization of the microstructure. In the current work, it will be investigated to which extent the mechanical properties can be adjusted through the extrusion process, allowing the use of the same alloy for both bone implants and soft tissue implants.