Senöz, C.; Evers, S.; Stratmann, M.; Rohwerder, M.: Scanning Kelvin Probe as a highly sensitive tool for detecting hydrogen permeation with high local resolution. Electrochemistry Communucations 13 (12), pp. 1542 - 1545 (2011)
Leng, A.; Streckel, H.; Stratmann, M.: Corrigendum to ‘‘The delamination of polymeric coatings from steel. Part 2: First stage of delamination, effect of type and concentration of cations on delamination, chemical analysis of the interface’’ [Corros. Sci. 41 (1998) 579–597]. Corrosion Science 53 (10), p. 3455 - 3455 (2011)
Frenznick, S.; Swaminathan, S.; Stratmann, M.; Rohwerder, M.: A novel approach to determine high temperature wettability and interfacial reactions in liquid metal/solid interface. Bulletin of Materials Science 45 (8), pp. 2106 - 2111 (2010)
Rohwerder, M.; Isik-Uppenkamp, S.; Stratmann, M.: Application of SKP for in situ monitoring of ion mobility along insulator/insulator interfaces. Electrochimica Acta 54 (25), pp. 6058 - 6062 (2009)
Posner, R.; Titz, T.; Wapner, K.; Stratmann, M.; Grundmeier, G.: Transport processes of hydrated ions at polymer/oxide/metal interfaces. Part 2: Transport on oxide covered iron and zinc surfaces. Electrochimica Acta 54 (33), pp. 900 - 908 (2009)
Posner, R.; Wapner, K.; Stratmann, M.; Grundmeier, G.: Transport processes of hydrated ions on oxide covered iron and zinc surfaces and interfaces. Part 1: Transport at polymer/oxide/metal interfaces. Electrochimica Acta 54 (3), pp. 891 - 899 (2009)
Frenznick, S.; Stratmann, M.; Rohwerder, M.: A new advanced experimental setup for in-depth study of the interfacial reaction during reactive wetting. Review of Scientific Instruments 79 (4), 043901 (2008)
Eckhard, K.; Erichsen, T.; Stratmann, M.; Schuhmann, W.: Frequency-Dependent Alternating-Current Scanning Electrochemical Microscopy (4D AC-SECM) for Local Visualisation of Corrosion Sites. Chemistry – A European Journal 14 (13), pp. 3968 - 3976 (2008)
Hausbrand, R.; Stratmann, M.; Rohwerder, M.: The physical meaning of electrode potentials at metal surfaces and polymer/metal interfaces: Consequences for delamination. Journal of the Electrochemical Society 155 (7), pp. C369 - C379 (2008)
Wapner, K.; Stratmann, M.; Grundmeier, G.: Structure and stability of adhesion promoting aminopropyl phosphonate layers at polymer/aluminium oxide interface. International Journal of Adhesion and Adhesives 28 (1-2), pp. 59 - 70 (2008)
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.
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.
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.
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,...
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…