The influence of the processing parameters on the porosity and microhardness of sintered Ti-20Nb biomedical alloy

Scientific paper - Original scientific paper

• Author: Ljerka Slokar Benić
• Author: Gorana Domitrović
• Author: Žiga Erman
• Author: Jadranko Šubić
• Author's institution: University of Zagreb; Faculty of Metallurgy
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Metallurgy

Abstract (english)

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 (english): Powder metallurgy; titanium alloys; biomedical alloys; porosity; microhardness
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Publication title: Conference Proceedings of 29th International Conference on Metallurgy and Materials METAL 2020
• Numbering: pp. 1129-1134
• ISBN: 978-80-87294-97-0
• p-ISSN: 2694-9296
• DOI: https://doi.org/10.37904/metal.2020.3581
• URN:NBN: urn:nbn:hr:115:152746
• Publication: 2020-07-27
• Conference: Title: 29th International Conference on Metallurgy and Materials METAL 2020; Location: Brno, Czech Republic; Start date: 2020-05-20; End date: 2020-05-22; Assembly type: Poster
• Document URL: https://www.confer.cz/metal/2020
• Type of resource: Text
• Publisher: TANGER Ltd.
• Publishing place: Ostrava, Czech Republic, EU
• Access conditions: Open access
• Created on: 2021-07-13 07:33:05