Research » Titanium Metallurgy

Titanium is called the material of the future. This title results from the unique combination of properties such as good corrosion resistance, high strength and biocompatibility with low density. Due to these properties, titanium alloys are increasingly being used in areas such as aerospace, automotive, chemical or medical technology.
Despite its relative commonness as the fourth most abundant element in the earth’s crust, titanium remains denied a wide industrial use. The reason for this is the high price of the metal, which results from the production costs. To reduce these and thus to allow the titanium the broad mass accessibility is a big challenge in research.
A reduction in process costs could be achieved both by minimizing process steps and increasing efficiency. For this reason, investigations have been made in the past for the direct recovery of titanium from rutile. By aluminothermic conversion of the TiO2 with aluminum so the costly chlorination and reduction step in the Kroll-method could be omitted. Furthermore, optimizations of this process have been made such as the mechanical activation of the rutile (reduction of  booster   up to 30%) or the study of alternative booster agents (reduction of chlorine emissions).
The recycling of the more frequently used titanium powders in additive manufacturing is also being pursued. In the HDH process, these powders are processed and prepared for further usein metallic 3D-printing.

Project List


Publications

YearPublications
2018
article in scientific journal
J.Engineer.Process.Manage. 10 (2018), Issue 1, pp. 9-20 DOI: 10.7251/JEPM1810009S
Srecko Stopic, Sebastian Kallabis, Bernd Friedrich
2018
article in scientific journal
Metals 8 (2018), Issue 5 DOI: 10.3390/met8050336
Mertol Gökelma, Dilara Celik, Onur Tazegul, Huseyin Cimenoglu, Bernd Friedrich
2018
congress or congress paper
2nd International Bauxite Residue Valorisation and Best Practices Conference, 07.-10.005.2018, Athens
2018
congress or congress paper
2nd International Bauxite Residue Valorisation and Best Practices Conference, 07.-10.005.2018, Athens
2018
article in scientific journal
Scientific Reports 8 (2018), Online-Artikel DOI: 10.1038/s41598-018-24077-9
Gözde Alkan, Bengi Yagmurlu, Seckin Cakmakoglu, Tobias Hertel, Serif Kaya, Lars Gronen, Srecko Stopic, Bernd Friedrich
2017
congress or congress paper
Proceedings of the Liquid Metal Processing & Casting Conference (LMPC 2017), 10.-13.09.2017, Philadelphia, USA
2017
article in scientific journal
Metals, Volume 7 (2017), Online-Artikel; DOI:10.3390/met7110458
2017
book chapter
in: Titanium Dioxide, Edited by Magdalena Janus, InTech ISBN 978-953-51-3414-5, Print ISBN 978-953-51-3413-8
Marcela Achimovicova, Christoph Vonderstein, Bernd Friedrich
2017
article in scientific journal
World of Metallurgy – ERZMETALL 70 (2017) No. 2
2016
article in scientific journal
Military Technical Courier, Volume 64 (2016), Issue 3, pp. 649-669; DOI: 10.5937/vojtehg64-10578

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