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MM: Fachverband Metall- und Materialphysik

MM 18: Poster Session I

MM 18.1: Poster

Montag, 16. März 2020, 18:15–20:00, P4

Analysis of polymers and stainless steels by scanning and transmission electron microscopy — •Bernhard Kaltschmidt, Inga Ennen, and Andreas Hütten — Thin Films & Physics of Nanostructures, University of Bielefeld, Bielefeld, Germany

The mechanisms of material aging are investigated to have a better understanding of the durability of materials. The aim of this work was to investigate the molecular changes induced by material aging. We examined polypropylene with different fillers like glass fibers and talcum. Here we analysed the microstructure of polypropylene after etching and heating. The polypropylene samples were freeze fractured and ultramicrotomed in different orientations. The stainless steels examined were: 1.4016, 1.4301 and 1.4510. The effects of pitting corrosion under different chemical environments were analysed. The steel lamellas used for TEM analysis of steel were cut by Focused Ion Beam (FIB). Results from SEM and TEM were compared to determine which technique is best suited for the task.