Prabhakar, J. M.; de Vooys, A.; Rohwerder, M.: Cathodic delamination behaviour of polymer coatings on chromium coatings electrodeposited from trivalent chromium electrolyte. EUROCORR 2020, virtual Congress (2020)
Rohwerder, M.: Strategies for enhancing Corrosion Protection by Organic Coatings. 71st Annual Meeting of the International Society of Electrochemistry, virtual (2020)
Rohwerder, M.: Zinc alloy coatings and nano-composite coatings for corrosion protection: From the basics to new challenges. IIM NMD ATM 2019: Advanced Materials for Industrial and Societal Applications, Kovalam, Thiruvananthapuram, India (2019)
Rohwerder, M.: Intelligent coatings for corrosion protection: on the need for new coating concepts. International Conference on Corrosion Protection and Application (ICCPA 2019), Chongqing, China (2019)
Rohwerder, M.: Scanning Kelvin Probe based techniques for mapping hydrogen distribution in metals and their application for investigating hydrogen embrittlement. Workshop “Hydrogen in Metals”, St Anne’s College, Oxford, UK (2019)
Uebel, M.; Rabe, M.; Rohwerder, M.: The Influence of Microstructure on Zn–Al–Mg Alloy Reactivity: A SKP-based Approach. Scientific Advisory Board Meeting 2019, 6-years Evaluation of the Max-Planck-Institut für Eisenforschung GmbH – Scientific Highlights Session, Düsseldorf, Germany (2019)
Rohwerder, M.: Die Kelvinsondentechnik in der Korrosion: von der Grundlagenforschung bis hin zu potentiellen Anwendungen im Feld. ProcessNet Meeting “Elektrochemische Prozesse”, Dechema-Haus, Frankfurt, Germany (2019)
Uebel, M.; Rohwerder, M.: The influence of microstructure on Zn–Al–Mg alloy reactivity investigated by SKP and SKPFM in changing atmospheres. Eurocorr 2018, Krakow, Poland (2018)
Rohwerder, M.; Tran, T. H.: Novel zinc-nanocontainer composite coatings for intelligent corrosion protection. 11th Intrenational Conference on Zinc And Zinc Alloy Coated Steel Sheet- GALVATECH 2017, The University of Tokyo, Tokyo, Japan (2017)
Merz, A.; Rohwerder, M.: Corrosion protection by composite coatings containing conducting polymer particles: elucidation of the “protection zone”. 232nd ECS Fall Meeting 2017, National Harbour, USA (2017)
Rohwerder, M.: Organic coatings for corrosion protection: self-healing at the delaminated interface. 232th Meeting of the Electrochemical Society, National Harbor, USA (2017)
Uebel, M.; Rohwerder, M.: Capsular networking and accelerated trigger signal spreading velocity in smart redox responsive coatings for corrosion protection. 232nd ECS Fall Meeting 2017, National Harbor, MD (greater Washington, DC area), USA (2017)
Rohwerder, M.: A Novel Potentiometric Approach to a Quantitative Characterization of Oxygen Reduction Kinetics at Buried Interfaces and under Ultrathin Electrolyte Layers. ECASIA 2017, Montpellier, France (2017)
Rohwerder, M.: A Novel Potentiometric Approach to a Quantitative Characterization of Oxygen Reduction Kinetics at Buried Interfaces and under Ultrathin Electrolyte Layers. Second International Conference on Electrochemical Science and Technology – ICONEST 2017, Indian Institute of Science, Bangalore, India (2017)
Uebel, M.; Rohwerder, M.: The impact of trigger signal spreading velocity on self-healing performance in smart anti-corrosion coatings. 6th International Conference on Self-Healing Materials (ICSHM) 2017, Friedrichshafen, Germany (2017)
Rohwerder, M.: Novel Approaches for Characterizing the Delamination resistance of Organic Coatings. 10th International Workshop on Application of Electrochemical Techniques to Organic Coatings –AETOC, Billerbeck, Germany (2017)
Laser Powder Bed Fusion (LPBF) is the most commonly used Additive Manufacturing processes. One of its biggest advantages it offers is to exploit its inherent specific process characteristics, namely the decoupling the solidification rate from the parts´volume, for novel materials with superior physical and mechanical properties. One prominet…
The aim of the Additive micromanufacturing (AMMicro) project is to fabricate advanced multimaterial/multiphase MEMS devices with superior impact-resistance and self-damage sensing mechanisms.
We have studied a nanocrystalline AlCrCuFeNiZn high-entropy alloy synthesized by ball milling followed by hot compaction at 600°C for 15 min at 650 MPa. X-ray diffraction reveals that the mechanically alloyed powder consists of a solid-solution body-centered cubic (bcc) matrix containing 12 vol.% face-centered cubic (fcc) phase. After hot compaction, it consists of 60 vol.% bcc and 40 vol.% fcc. Composition analysis by atom probe tomography shows that the material is not a homogeneous fcc–bcc solid solution
Magnetic properties of magnetocaloric materials is of utmost importance for their functional applications. In this project, we study the magnetic properties of different materials with the final goal to discover new magnetocaloric materials more suited for practical applications.
This project is a joint project of the De Magnete group and the Atom Probe Tomography group, and was initiated by MPIE’s participation in the CRC TR 270 HOMMAGE. We also benefit from additional collaborations with the “Machine-learning based data extraction from APT” project and the Defect Chemistry and Spectroscopy group.
Statistical significance in materials science is a challenge that has been trying to overcome by miniaturization as in micropillar compression. However, this process is still limited to 4-5 tests per parameter variance, i.e. Size, orientation, grain size, composition, etc. as the process of fabricating pillars and testing has to be done one by one.…
In this project we pursue recent developments in the field of austenitic steels with up to 18% reduced mass density. The alloys are based on the Fe-Mn-Al-C system.
Local lattice distortion is one of the core effects in complex concentrated alloys (CCAs). It has been expected that the strength CCAs can be improved by inducing larger local lattice distortions. In collaboration with experimentalists, we demonstrated that VCoNi has larger local lattice distortions and indeed has much better strength than the…