Original title: Microstructure and mechanical properties of the potentially biodegradable ternary system Zn-Mg0. 8-Ca0.2
Authors: Pinc, Jan ; Čapek, Jaroslav ; Kubásek, J. ; Veřtát, Petr ; Hosová, K.
Document type: Papers
Conference/Event: International Conference on Materials Structure and Micromechanics of Fracture, MSMF9 /9./, Brno (CZ), 20190626
Year: 2019
Language: eng
Abstract: Zinc and zinc alloys exhibit suitable corrosion properties for biodegradable implants. Insufficient mechanical properties (for some applications) or low biocompatible Zn2+ concentrations can be modified by the alloying by essential elements like magnesium, calcium or strontium. The alloying elements also enhance the biocompatibility of zinc due to a decrease of Zn2+ release which could be toxic in a concentration exceeding 100 µM. In this study, the microstructure and hardness of a potentially biodegradable alloy ZnMg0.8Ca0.2 were observed in relation to different cooling rates. It was found that zinc dendrites, Mg2Zn11 (MgZn2) and CaZn13 phases occur in the material structure. The micro-hardness measurements revealed constant hardness of the particular phases, however, the macro-harness slightly decreased with the decreasing cooling rate due to changes in phase sizes and distribution.
Keywords: biodegradable materia; hardness; microstructure; ternary system; zinc
Project no.: CZ.02.1.01/0.0/0.0/16_019/0000760, EF16_019/0000760, GA18-06110S (CEP)
Funding provider: OP VVV - SOLID21, GA MŠk, GA ČR
Host item entry: Procedia Structural Integrity, ISSN 2452-3216

Institution: Institute of Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0314441

Permalink: http://www.nusl.cz/ntk/nusl-432442


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