Successfully completed doctorate

On 30 March 2021, Martin Löbel successfully defended his dissertation thesis entitled „Influence of structure and manufacturing route on the tribological behaviour of thermally sprayed high entropy alloys“.

High-entropy alloys represent a new development approach of metallic materials without a property-determining main element. Based on this approach, a promising combination of properties could be demonstrated. In his work, Dr Löbel dealt with the systematic transfer of these alloys, which had previously been considered mainly on the basis of solid materials, to coating technology. For this, a suitable manufacturing route for thermally sprayed coating systems first had to be developed. The detailed investigations into the process-structure-property relationships were carried out on alloys with variable structures. The focus of the investigations was to determine the determining influencing factors and their influence on the tribological property profile. In order to evaluate the influence of the size of the structural features, the heterogeneity and possible states of disequilibrium, solid materials produced by melting and powder metallurgy were considered as a reference. The results contribute to a deeper understanding of the process-structure-property relationships of thermally sprayed and powder-metallurgically processed high entropy alloys.

The work will soon be published under the IWW's own publishing house in the series „Materials and Materials Engineering Applications“ and in the Qucosa portal ( https://www.qucosa.de/startseite/ ).

Image:
Prof. Martin Franz-Xaver Wagner (head of the doctoral procedure), Prof. Christoph Leyens (second examiner), Prof. Thomas Lampke (doctoral supervisor and first examiner) and Dr. Martin Löbel at the „philosopher's stone“ with the book of doctoral and post-doctoral students of the IWW .

12.4.2021 – Personnel of the professorship ( martin.loebel@mb… )