Stratmann, M.; Hausbrand, R.; Rohwerder, M.: Novel Zinc Alloy Coatings: Tailored Semiconducting Oxides for Improved Corrosion Protection and Adhesion of Organic Coatings. 13th Asian Pacific Corrosion Control Conference, plenary lecture, Osaka, Japan (2003)
Hausbrand, R.; Stratmann, M.; Rohwerder, M.: Delaminationsschutz mit neuartigen Zinklegierungsschichten. API-Tagung, API-Preisvortrag, "Die Lackindustrie auf dem Wege zur sanften Chemie?", Rostock-Warnemünde, Germany (2003)
Rohwerder, M.; Hornung, E.; Yu, X.: Delamination of Polymer Coatings from Metal Substrates: Submicroscopic and Molecular Aspects. MRS Fall Meeting, Boston, MA, USA (2002)
Rohwerder, M.: The Effect of the Electrode Potential on Molecular Self-Assembly. Symposium on "Nano-scale materials and self assembling structures", Cykl sympozjów naukowych i imprez kulturalnych", Science and Art in Europe, Warsaw, Poland (2002)
Rohwerder, M.: Atomic and Molecular Order at Surfaces and Buried Interfaces and its Effect on Chemical and Mechanical Stability. MPG-UCSB Workshop on “Nanostructured and Functional Materials”, Naurod, Germany (2002)
Rohwerder, M.; Hausbrand, R.; Grundmeier, G.; Stratmann, M.: Study of electrochemical behaviour of MgZn2 with respect to its effect on the corrosion of Mg-containing zinc coatings on steel. ISE 2002, Düsseldorf, Germany (2002)
Rohwerder, M.; Stratmann, M.: Self-Assembly From Solution And Under Electrochemical Control Compared to Monolayer Growth By Vapor Phase Deposition. MRS Fall Meeting 2001, Boston, MA, USA (2001)
Rohwerder, M.; Stratmann, M.; de Boeck, A.; Ogle, K.; Rehnisch, O.; Reier, T.; Stellnberger, K.-H.; Steinbeck, C.; Wormuth, R.: Investigation of the delamination of polymer-coated zinc and steel surfaces with the scanning Kelvin probe in a climatic cycle test. GALVATECH 2001, Brussels, Belgium (2001)
Rohwerder, M.: The Scanning Kelvinprobe - A New Technique to Study the Stability of Metal/Polymer Bonds. Second International Symposium on Adhesion Aspects of Polymeric Coatings, Newark, NJ, USA (2000)
Rohwerder, M.; Stratmann, M.: The Scanning Kelvin Probe as a New Technique to Analyze Buried Interfaces. 196th meeting of the ECS, Honolulu, USA (1999)
Rohwerder, M.; Unger, M.; Lobnig, R. E.; Stratmann, M.: Role of ammonia sulfate particles in the corrosion of electronic devices. Eurocorr'99, Aachen, Germany (1999)
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…
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.
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…
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.
Understanding hydrogen-assisted embrittlement of advanced structural materials is essential for enabling future hydrogen-based energy industries. A crucially important phenomenon in this context is the delayed fracture in high-strength structural materials. Factors affecting the hydrogen embrittlement are the hydrogen content,...
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
The project aims to study corrosion, a detrimental process with an enormous impact on global economy, by combining denstiy-functional theory calculations with thermodynamic concepts.
Thermo-chemo-mechanical interactions due to thermally activated and/or mechanically induced processes govern the constitutive behaviour of metallic alloys during production and in service. Understanding these mechanisms and their influence on the material behaviour is of very high relevance for designing new alloys and corresponding…
Nickel-based alloys are a particularly interesting class of materials due to their specific properties such as high-temperature strength, low-temperature ductility and toughness, oxidation resistance, hot-corrosion resistance, and weldability, becoming potential candidates for high-performance components that require corrosion resistance and good…