Rohwerder, M.: Novel Approaches for Characterizing the Delamination resistance of Organic Coatings. 230th ECS Meeting-PRiME 2016, Honolulu, HI, USA (2016)
Uebel, M.; Rohwerder, M.: Conducting polymer based anticorrosion composite coatings – acceleration of the trigger signal spreading. 7th Kurt-Schwabe-Symposium 2016, Mittweida, Germany (2016)
Kerger, P.; Rohwerder, M.; Vogel, D.: Using a Novel In-situ/Operando Chemical Cell to Investigate Surface Reactions such as the Reduction of Oxygen and Surface Oxides. 11th International Symposium on Electrochemical Micro & Nanosystem Technologies (EMNT2016), Brussels, Belgium (2016)
Rohwerder, M.; Dandapani, V.: A Novel Potentiometric Approach to a Quantitative Characterization of Oxygen Reduction Kinetics at Buried Interfaces. 11th International Symposium on Electrochemical Micro & Nanosystem Technologies (EMNT2016), Brussels, Belgium (2016)
Uebel, M.; Vimalanandan, A.; Lv, L.-P.; Crespy, D.; Rohwerder, M.: Dual payload capsules for corrosion protection coatings – importance of the electronic coupling at the metal/capsules interface. 67th Annual Meeting of the International Society of Electrochemistry (ISE) 2016, The Hague, The Netherlands (2016)
Mondragon Ochoa, J. S.; Altin, A.; Rohwerder, M.; Erbe, A.: Surface Modification of Iron With Grafted Hydrophobic Acrylic Polymers and Study of Their Delamination Kinetics. Polymers and Organic Chemistry POC16, Hersonissos (Crete), Greece (2016)
Rohwerder, M.: Die Rasterkelvinsonde: neue Entwicklungen für die Charakterisierung von Korrosionsschutzbeschichtungen. 7. Korrosionsschutz-Symposium, Kloster Irsee, Germany (2016)
Rohwerder, M.: Characterization of Oxides in the Heat Affected Zone. Welding Workshop “Guidelines for use of welded stainless steel in corrosive environments” at TWI, Granta Park, Cambridge, UK (2016)
Tarzimoghadam, Z.; Rohwerder, M.; Merzlikin, S. V.; Bashir, A.; Yedra, L.; Eswara, S.; Ponge, D.; Raabe, D.: On the Role of δ phase in Hydrogen Embrittlement of Alloy 718: Multi-scale H-Mapping in a Ni–Nb Model Alloy. SINTEF and NTNU's Environmental Assisted Cracking (SNEAC) workshop, Trondheim, Norway (2016)
Wengert, A.; Swaminathan, S.; Vogel, A.; Rohwerder, M.: Internal oxidation of high strength steels during short-term annealing: Observation of unexpectedly fast progress of the internal oxidation and first tentative model. EFC Workshop High Temperature Corrosion, Frankfurt, Germany (2015)
Uebel, M.; Vimalanandan, A.; Tran, T. H.; Rohwerder, M.: Coatings for intelligent self-healing of macroscopic defects: first results and the major challenges. eMRS, Symposium „Self-Healing Materials", Warsaw, Poland (2015)
Rohwerder, M.: Selbstheilende Beschichtungen für den Korrosionsschutz: Ein kritischer Überblick. 28. Sitzung des AK “Korrosionsschutz durch Beschichtungen”, GfKorr, Frankfurt, Germany (2014)
Oxides find broad applications as catalysts or in electronic components, however are generally brittle materials where dislocations are difficult to activate in the covalent rigid lattice. Here, the link between plasticity and fracture is critical for wide-scale application of functional oxide materials.
In this project we conduct together with Dr. Sandlöbes at RWTH Aachen and the department of Prof. Neugebauer ab initio calculations for designing new Mg – Li alloys. Ab initio calculations can accurately predict basic structural, mechanical, and functional properties using only the atomic composition as a basis.
The wide tunability of the fundamental electronic bandgap by size control is a key attribute of semiconductor nanocrystals, enabling applications spanning from biomedical imaging to optoelectronic devices. At finite temperature, exciton-phonon interactions are shown to exhibit a strong impact on this fundamental property.
Enabling a ‘hydrogen economy’ requires developing fuel cells satisfying economic constraints, reasonable operating costs and long-term stability. The fuel cell is an electrochemical device that converts chemical energy into electricity by recombining water from H2 and O2, allowing to generate environmentally-friendly power for e.g. cars or houses…
The project Hydrogen Embrittlement Protection Coating (HEPCO) addresses the critical aspects of hydrogen permeation and embrittlement by developing novel strategies for coating and characterizing hydrogen permeation barrier layers for valves and pumps used for hydrogen storage and transport applications.
Efficient harvesting of sunlight and (photo-)electrochemical conversion into solar fuels is an emerging energy technology with enormous promise. Such emerging technologies depend critically on materials systems, in which the integration of dissimilar components and the internal interfaces that arise between them determine the functionality.
In this project, we work on a generic solution to design advanced high-entropy alloys (HEAs) with enhanced magnetic properties. By overturning the concept of stabilizing solid solutions in HEAs, we propose to render the massive solid solutions metastable and trigger spinodal decomposition. The motivation for starting from the HEA for this approach…