Zinc alloys as prospective materials for biodegradable medical devices

0538600 - FZÚ 2021 RIV CZ eng J - Článek v odborném periodiku
Kubásek, J. - Dvorský, D. - Čapek, Jaroslav - Straková, M. - Hosová, K. - Vojtěch, D.
Zinc alloys as prospective materials for biodegradable medical devices.
Manufacturing Technology. Roč. 20, č. 6 (2020), s. 799-784. ISSN 1213-2489
Grant CEP: GA ČR(CZ) GA18-06110S
Výzkumná infrastruktura: NanoEnviCz - 90073
Institucionální podpora: RVO:68378271
Klíčová slova: Zinc * magnesium * biodegradable materials * mechanical properties
Obor OECD: Materials engineering
Způsob publikování: Open access

Zinc-based materials are considered as promising materials for an application like biodegradable medical devices (bone fixations, stents). Such materials have to be characterized by an excellent combination of mechanical, corrosion and biological properties. Presented paper is focused on the characterization of microstructure and closely related mechanical properties for 3 zinc materials, namely pure Zn, Zn-0.8Mg and Zn-0.8Mg-0.2Sr. Studied alloys were prepared by gravity casting, homogenization treatment at 350 °C and extrusion at 200 °C and extrusion ratio 11. Alloying by Mg caused the refinement of microstructure, formation of Mg2Zn11 phase and related improvement of mechanical properties like TYS and UTS for an extruded alloy. An additional encore of Sr causes a systematical improvement of TYS and UTS values, although the elongation vas slightly decreased due to the presence of brittle SrZn13 phase.
Trvalý link: http://hdl.handle.net/11104/0316377