|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIX
||Formation and properties of Ti-Zr-Nb-Hf-Si multi-principal-element glassy alloys for biomedical applications
||Mariana Calin, Jithin Vishnu, Pramote Thirathipviwat, Maria Krautz, Geetha Manivasagam, Annett Gebert
|On-Site Speaker (Planned)
Multi-principal element materials, with compositions in the central region of the multi-component phase diagram, are known as high-entropy alloys (HEAs). Most of these complex concentrated alloys are thermodynamically metastable, resulting in a solid solution-type structure whether as a crystalline or an amorphous phase.
In this work we used the HEAs approach for designing new biocompatible Ti-Zr-Nb-Hf-Si metallic glasses, with unique properties for small implantable medical devices. Phase analysis has revealed the amorphous structure of developed alloys, with a higher thermal stability than the conventional metallic glasses. The novel glassy alloys exhibit high micro-hardness and excellent corrosion properties in simulated body fluid. Most importantly, the weak paramagnetic nature (ultralow magnetic susceptibility) and superior radiopacity (high X-ray attenuation coefficients) offer compatibility with medical diagnostic imaging systems thereby opening unexplored realms for biomedical applications.
Financial support through the EC (H2020 BIOREMIA, GA 861046) is gratefully acknowledged.
||Biomaterials, Characterization, High-Entropy Alloys