INFLUENCE OF SPARK PLASMA SINTERING ON MICROSTRUCTURE AND CORROSION BEHAVIOUR OF WN43 MAGNESIUM ALLOY FOR BIOMATERIALS

1 ZEMKOVÁ Mária
Co-authors:
2 LUKÁČ František 2 CINERT Jakub 3 BOHLEN Jan 1 MINÁRIK Peter 1 KRÁL Robert
Institutions:
1 Charles University, Faculty of Mathematics and Physics Department of Physics of Materials, Ke Karlovu 5, 12116 Prague, Czech Republic, EU, maria.zemkova@mff.cuni.cz
2 Institute of Plasma Physics, Czech Academy of Science, Za Slovankou 3, 18200 Prague, Czech Republic EU
3 Magnesium Innovation Center, Max-Planck-Straße 1, Geesthacht, Germany, EU
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
1273-1278
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
22 views / 11 downloads
Abstract

Magnesium alloy Mg-4Y-3Nd was prepared by spark plasma sintering technique. The gas-atomized powder was sintered at temperatures in the range of 400-500 °C and holding time up to 10 minutes. The effect of sintering parameters, particularly sintering temperature and holding time, on the microstructure and corrosion resistance was investigated. The effect of sintering on the microstructure was investigated by scanning electron microscopy. Mechanical strength was investigated by microhardness measurements and corrosion properties were studied by linear polarization method. The results show that the sintering conditions seem to have only a minor effect on the final microhardness in the investigated temperature range. However, the increase in the sintering temperature caused recrystallization and grain growth accompanied by dissolution and reprecipitation of secondary phases particles. Due to these microstructural changes, the corrosion resistance was improved.

Keywords: Magnesium, spark plasma sintering, microstructure, corrosion resistance
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