Swaminathan, S.; Spiegel, M.; Rohwerder, M.: Investigations on external/internal oxidation of quarternary model alloy during annealing in N2/H2: Role of dew point and dwelling time. 7th International Conference on the Microscopy of Oxidation, Chester, UK (2008)
Fenster, J. C.; Rohwerder, M.; Hassel, A. W.: Impedance-Titration: A Novel Method for Understanding the Kinetics of Corrosion in Aqueous Solutions. 59th Annual Meeting of the International Society of Electrochemistry, Sevilla, Spanien (2008)
Khan, T. R.; de la Fuenta, D.; Rohwerder, M.: Electrolytic co-deposition of SiO2 nanoparticles with zinc for improvement of corrosion protection. 59th Annual Meeting of the International Society of Electrochemistry, Seville, Spain (2008)
Stratmann, M.; Hassel, A. W.; Rohwerder, M.: Microelectrochemical Investigations of Interfaces and Surfaces of Advanced Materialks. 7th International Symposium on Electrochemical Micro- and Nanosystems, Ein-Gedi, Israel (2008)
Salgin, B.; Rohwerder, M.: Effects of Semiconducting Properties of Surface Oxide on the Delamination at the Polymer/Zinc Interface. SurMat Seminar, Kleve, Germany (2008)
Swaminathan, S.; Spiegel, M.; Rohwerder, M.: Effect of annealing conditions on the selective oxidation of quarternary model alloy. 4th International Conference on Diffusion in Solids and Liquids, Barcelona, Spain (2008)
Borodin, S.; Rohwerder, M.: Growth of high quality crystalline aluminium oxide films on Nb(110)/sapphire(11-20). 14th International Conference on Solid Films and Surfaces (ICSFS), Dublin, Ireland (2008)
Borodin, S.; Rohwerder, M.: Preparation of model single crystalline aluminium oxide films suitable for scanning tunnelling microscopy. DPG Tagung 2008, 72. Jahrestagung der Deutsche Physikalische Gesellschaft, Berlin, Germany (2008)
Michalik, A.; Rohwerder, M.: Long-range ion transport properties of conducting-polymers. 59th Annual Meeting of the International Society of Electrochemistry, Sevilla, Spain (2008)
Rohwerder, M.: Intelligent corrosion protection by organic coatings based on conducting polymers. Departmental Seminar at Departement für Chemie und Biochemie der Universität Bern, Bern, Switzerland (2008)
Borissov, D.; Rohwerder, M.: Fundamental Investigation of the Effect of Oxides on the Reaction Kinetics During Hot Dip Galvanizing. GALVATECH `07, 7th International Conference on Zinc and Zinc Alloy Coated Steel Sheet, Osaka, Japan (2007)
Isik-Uppenkamp, S.; Laaboudi, A.; Rohwerder, M.: Delamination of Polymer/Metal Interfaces: On the Correlation of Kinetics and Interfacial Structure. 212th ECS Meeting, Washington, D.C., USA (2007)
Borodin, S.; Rohwerder, M.: STM-investigation of self-assembly of phosphonates on model oxides. ECASIA 2007, 12th European Conference on Applications of Surface and Interface Analysis, Brussels-Flggey, Belgium (2007)
Laaboudi, A.; Isik-Uppenkamp, S.; Rohwerder, M.: Modelling cathodic delamination: Oxygen reduction and interface degradation at a molecularly well defined coating/metal interface. ECASIA 2007, 12th European Conference on Applications of Surface and Interface Analysis, Brussels-Flagey, Belgium (2007)
Isik-Uppenkamp, S.; Stratmann, M.; Rohwerder, M.: Scanning Kelvin Probe Microscopy for characterisation of iron mobility at buried interfaces. ECASIA 2007, 12th European Conference on Applications of Surface and Interface Analysis, Brussels-Flggey, Belgium (2007)
Van De Putte, T.; Borissov, D.; Loison, D.; Penning, J.; Rohwerder, M.; Claessens, S.: Reduction of SiO2 Surface Oxides by Solute Carbon to Improve the Galvanizability of Si alloyed AHSS. International Conference on New Developments in Advanced High Strength Sheet Steels, Orlando, FL, USA (2007)
Hydrogen in aluminium can cause embrittlement and critical failure. However, the behaviour of hydrogen in aluminium was not yet understood. Scientists at the Max-Planck-Institut für Eisenforschung were able to locate hydrogen inside aluminium’s microstructure and designed strategies to trap the hydrogen atoms inside the microstructure. This can…
We will investigate the electrothermomechanical response of individual metallic nanowires as a function of microstructural interfaces from the growth processes. This will be accomplished using in situ SEM 4-point probe-based electrical resistivity measurements and 2-point probe-based impedance measurements, as a function of mechanical strain and…
This project aims to investigate the influence of grain boundaries on mechanical behavior at ultra-high strain rates and low temperatures. For this micropillar compressions on copper bi-crystals containing different grain boundaries will be performed.
Oxidation and corrosion of noble metals is a fundamental problem of crucial importance in the advancement of the long-term renewable energy concept strategy. In our group we use state-of-the-art electrochemical scanning flow cell (SFC) coupled with inductively coupled plasma mass spectrometer (ICP-MS) setup to address the problem.
For understanding the underlying hydrogen embrittlement mechanism in transformation-induced plasticity steels, the process of damage evolution in a model austenite/martensite dual-phase microstructure following hydrogenation was investigated through multi-scale electron channelling contrast imaging and in situ optical microscopy.
This project will aim at developing MEMS based nanoforce sensors with capacitive sensing capabilities. The nanoforce sensors will be further incorporated with in situ SEM and TEM small scale testing systems, for allowing simultaneous visualization of the deformation process during mechanical tests
Hydrogen induced embrittlement of metals is one of the long standing unresolved problems in Materials Science. A hierarchical multiscale approach is used to investigate the underlying atomistic mechanisms.
Hydrogen embrittlement affects high-strength ferrite/martensite dual-phase (DP) steels. The associated micromechanisms which lead to failure have not been fully clarified yet. Here we present a quantitative micromechanical analysis of the microstructural damage phenomena in a model DP steel in the presence of hydrogen.