Dresden 2009 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 42: Poster Session II (Nanostructures at surfaces: arrays; Nanostructures at surfaces: Dots, particles, clusters; Nanostructures at surfaces: Other; Nanostructures at surfaces: Wires, tubes; Metal substrates: Adsorption of O and/or H; Metal substrates: Clean surfaces; Metal substrates: Adsorption of organic/bio moledules; Metal substrates: Solid-liquid interfaces; Metal substrates: Adsorption of inorganic molecules; Metal substrates: Epitaxy and growth; Heterogeneous catalysis; Surface chemical reactions; Ab-initio approaches to excitations in condensed matter; Organic, polymeric, biomolecular films– also with adsorbates; Particles and clusters)

O 42.98: Poster

Mittwoch, 25. März 2009, 17:45–20:30, P2

Pulsed laser modification of the steel-polymer interface — •Christian Holzheu, Matthias Laske, and Othmar Marti — University of Ulm, Institute of Experimental Physics

Laser treatment of stainless steel and the resulting material changes are studied. The irradiation of steel surfaces with short laser pulses improves the adhesion of polymers and especially of fluorinated polymers. Several experiments helped to elucidate the main parameters responsible for polymer adhesion. A setup for laser conditioning under well defined atmospheres was developed. Chemical changes and changes in surface topography caused by laser treatment are analyzed and compared with relevant adhesion data. Measuring the reflectance by the surface allowed to get a relative measure of chemical changes at the surface of the material. For quantitative material characterization GDOES (Glow Discharge Optical Emission Spectroscopy) is used. The durability of the steel before and after laser treatment is evaluated in long time tests applying mechanical pulses.