|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Biodegradable Materials for Medical Applications
||Microstructure Properties and In-vitro Degradation Behavior of the Bioresorbable Magnesium Alloy ZNdK100
||Christian Klose, Rainer Eifler, Hans Jürgen Maier
|On-Site Speaker (Planned)
The low-alloyed magnesium-zinc-neodymium-zirconium alloy ZNdK100 offers two opposing mechanical strength characteristics depending on the parameters during extrusion for extrusion ratios above 25:1. As already shown by the authors, extrusion at a temperature of 350°C leads to a bimodal microstructure which exhibits high tensile yield strength (~370 MPa), whereas processing at 450°C causes the formation of a uniform, recrystallized microstructure allowing for high elongation of up to 25% at medium strength. This could enable implementation of several applications in the field of both soft and hard tissue temporary implants by using a single magnesium alloy. In this study, results of the most recent corrosion investigations are presented with respect to the different microstructures of ZNdK100. In-vitro degradation was examined by means of immersion tests, volumetric measurements and detailed microstructure analyses. Moreover, a comparison is drawn with the binary alloy MgNd2, whose in-vitro and in-vivo degradation properties are known from previous investigations.
||Planned: Supplemental Proceedings volume