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Max-Planck-Institut für Festkörperforschung Heisenbergstr. 3 70569 Stuttgart, Germany http://www.fkf.mpg.de
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Max-Planck-Institut für Festkörperforschung

Kontrollierte Korrosion

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Die Korrosion technisch relevanter Legierungen wie Edelstahl verursacht jedes Jahr weltweit einen wirtschaftlichen Schaden von etwa 3 Prozent des globalen Bruttosozialprodukts. Obwohl dieses Alltagsphänomen so weitreichende Folgen hat, sind seine grundlegenden mikroskopischen Prozesse noch weitgehend unverstanden, vor allem was das Einsetzen und die Evolution der Korrosion auf atomarer Ebene betrifft. Nun ist es Andreas Stierle und seinen Kollegen des Max-Planck-Instituts für Metallforschung, der Universität Ulm sowie der Europäischen Synchrotronstrahlungsquelle (ESRF) in Grenoble/Frankreich, erstmals gelungen, diese atomaren Prozesse bei der Korrosion einer Legierung gewissermaßen "live" zu verfolgen. Zur großen Überraschung der Forscher entsteht bei der an sich zerstörerischen Korrosion zunächst eine
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