Wielant, J.; Posner, R.; Hausbrand, R.; Grundmeier, G.; Terryn, H.: SKP as tool to study the physicochemical interaction at buried metal-coating interfaces. 13th European Conference on Applications of Surface and Interface Analysis, Antalya, Turkey, October 18, 2009 - October 23, 2009. Surface and Interface Analysis 42 (6-7), pp. 1005 - 1009 (2010)
Sarfraz, A.; Posner, R.; Lill, K.; Erbe, A.: Zirconium oxide based conversion layers on aluminum alloys: Role of intermetallics. 112th Bunsentagung (Annual German Conference on Physical Chemistry), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany (2013)
Posner, R.; Marazita, M.; Wapner, K.; Amthor, S.; Roschmann, K. J.; Grundmeier, G.: The polymer network structure as a key parameter for the corrosion resistance of polymer/oxide/metal interfaces. ISE Spring Meeting 2010, Columbus, OH/USA (2010)
Santa, M.; Posner, R.; Grundmeier, G.: In-situ backside surface enhanced Raman study on the reactive wetting process at noble metal-monolayer interfaces supported by SKP, XPS and ToF-SIMS. Kurt Schwabe Symposium 2009, Erlangen, Germany (2009)
Posner, R.; Giza, G.; Vlasak, R.; Grundmeier, G.: Electrochemical and Spectroscopic Analysis of Ion Transport Processes along Polymer/Oxide/Metal Interfaces in Corrosive and Non-Corrosive Atmosphere. Euradh 2008 - Adhesion '08, St Catherine's College, Oxford, UK (2008)
Grundmeier, G.; Posner, R.: Structure and stability of polymer/oxide/metal interfaces - Bridging the gap between interface analysis and advanced surface technologies. CoSI 2008, Coating Science International conference, Noordwijk, The Netherlands (2008)
Wielant, J.; Posner, R.; Hausbrand, R.; Grundmeier, G.; Terryn, H.: Surface and bulk properties of oxide films and their influence on the adhesion and delamination of organic coatings. 213th ECS Meeting, Phoenix, AZ, USA (2008)
Fink, N.; Posner, R.; Klimow, G.; Grundmeier, G.: Investigation of driving forces leading to a better understanding of ion transport reactions at metal/oxide/polymer interfaces. The 58th Annual Meeting of the International Society of Electrochemistry, Banff, Canada (2007)
Grundmeier, G.; Posner, R.; Vlasak, R.: Combined Spectroscopic and Electrochemical Studies of Water and Ion Transport along Polymer/Oxide/Metal Interphases. ECASIA 2007, 12th European Conference on Applications of Surface and Interface Analysis, Brussels-Flggey, Belgium (2007)
Posner, R.; Giza, G.; Grundmeier, G.: Investigation of the polymer/oxide/metal interface stability with an in-situ Scanning Kelvin Probe Blister Test. ISE Spring Meeting 2010, Columbus, OH, USA (2010)
Fink, N.; Posner, R.; Giza, G.; Grundmeier, G.: Electrochemical Studies in Adhesion Science. Meeting of the Society of German Chemists (GDCH), Section Electrochemistry, Gießen, Germany (2008)
Santa, M.; Posner, R.; Grundmeier, G.: Surface enhanced Raman spectroscopy and Scanning Kelvin Probe studies of corrosive de-adhesion at polymer-metal interfaces. The 59th Annual Meeting of the International Society of Electrochemistry, Seville, Spain (2008)
Posner, R.; Wapner, K.; Stratmann, M.; Grundmeier, G.: Hydrated Ion Transport at Polymer/Oxide/Metal-Interfaces in Non-Corrosive Atmosphere: Influence of Electric Field Gradients. Gordon Conference Graduate Research Seminar on Aqueous Corrosion, Colby Sawyer College, New London, NH, USA (2008)
Wielant, J.; Posner, R.; Grundmeier, G.; Terryn, H.: Influence of iron oxide films on the adhesion and delamination of organic coatings. Gordon Research Conference on Aqueous Corrosion 2008, New London, NH, USA (2008)
Posner, R.: Combined Spectroscopic and Electrochemical Studies of Ion Transport and Corrosive de-Adhesion Processes at Polymer/Oxide/Metal Interfaces. Dissertation, Fakultät für Naturwissenschaften der Universität Paderborn, Paderborn, Germany (2009)
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…
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.
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
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.
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.
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…