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.

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Publications

YearPublications
2022
article in scientific journal
ACS Sustainable Chemistry & Engineering 10(18):6063-6071, DOI: 10.1021/acssuschemeng.2c01056
Sebastian Hedwig, Bengi Yagmurlu, Danyu Huang, Oliver von Arx, Carsten Dittrich, Edwin C. Constable, Bernd Friedrich, Markus Lenz
2022
article in scientific journal
Minerals 2022, 12(3), 310; https://doi.org/10.3390/min12030310
Thomas Schirmer, Hao Qiu, Daniel Goldmann, Christin Stallmeister, Bernd Friedrich
2021
congress or congress paper
Mater. Proc. 2021, 5, 86; https://doi.org/10.3390/materproc2021005086; International Conference on Raw Materials and Circular Economy, Athens, Greece, 5. – 9. September 2021
2021
article in scientific journal
Hydrometallurgy 206 (2021) 105754, https://doi.org/10.1016/j.hydromet.2021.105754
Yiqian Ma, Srecko Stopic, Buhle Xakalashe, Sehliselo Ndlovu, Kerstin Forsberg, Bernd Friedrich
2020
article in scientific journal
Metals – Open Access Metallurgy Journal 10(1):88 DOI: 10.3390/met10010088
Vesna S. Cvetkovic, Natasa M. Vukicevic, Ksenija Milicevic, Srecko Stopic, Bernd Friedrich, Jovan N. Jovicevic
2020
article in scientific journal
Journal of Applied Electrochemistry 50(1–2) DOI: 10.1007/s10800-019-01385-0
Joachim Gussone, Yerragudi Vijay Chakradhar Reddy, Philipp Watermeyer, Ksenija Milicevic Neumann, Bernd Friedrich, Jan Haubrich
2019
poster
9th International Conference of the Chemical Societies of the South-Eastern European Countries, May 8-11, 2019, Targoviste, Romania
Vesna S. Cvetkovic, Natasa M. Vukicevic, Ksenija Milicevic, Srecko Stopic, Bernd Friedrich, Jovan N. Jovicevic
2019
article in scientific journal
Journal of Sustainable Metallurgy (2019), Online-Artikel DOI: 0.1007/s40831-019-00215-z
2018
poster
2nd Int. Bauxite Residue Valorisation and Best Practices Conference
2018
congress or congress paper
3rd Ingot Casting, Rolling and Forging Conference, ICRF, 16.-19.10.2018, Stockholm (Sweden)

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