THE INFLUENCE OF THE PROCESSING PARAMETERS ON THE POROSITY AND MICROHARDNESS OF SINTERED TI-20NB BIOMEDICAL ALLOY

1 SLOKAR BENIĆ Ljerka
Co-authors:
2 DOMITROVIĆ Gorana 3 ERMAN Žiga 4 ŠUBIĆ Jadranko
Institutions:
1 University of Zagreb Faculty of Metallurgy, Sisak, Republic of Croatia, EU, slokar@simet.unizg.hr
2 University of Zagreb Faculty of Metallurgy, Sisak, Republic of Croatia, EU, goranad82@gmail.com
3 University of Ljubljana Faculty of Natural Sciences and Engineering, Ljubljana, Slovenia, EU, ziga.erman@magneti.si
4 Elmech-Sintermak Ltd., Zagreb, Croatia, EU, sintermak@sintermak.hr
Conference:
29th International Conference on Metallurgy and Materials, Brno, Czech Republic, EU, May 20 - 22, 2020
Proceedings:
Proceedings 29th International Conference on Metallurgy and Materials
Pages:
1129-1134
ISBN:
978-80-87294-97-0
ISSN:
2694-9296
Published:
27th July 2020
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
695 views / 380 downloads
Abstract

Titanium based alloys are increasingly used in biomedicine due to their favourable properties. However, because of their high cost, new methods are being developed to produce more economical alloys. Therefore, in the framework of this work, Ti-20Nb alloy was produced by powder metallurgy. Namely, experimental alloy was prepared by mechanical alloying in a ball mill. The samples were singled out from the powder mixture and pressed on a hydraulic press. Sintering was carried out in a tube furnace in an argon atmosphere. Different processing parameters regarding the time and temperature of sintering were applied. Chemical homogeneity was analysed using the energy-dispersive spectrometry. Porosity was observed using the light microscope and microhardness was determined by Vickers method. The obtained results show that with a small correction of the applied technological parameters, in terms of time extension of mixing/mechanical alloying, it is possible to produce economically Ti-20Nb alloy having the properties suitable for biomedical application by using powder metallurgy technology.

Keywords: Powder metallurgy, titanium alloys, biomedical alloys, porosity, microhardness

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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