Robert Sonnleitner, Christian Doppler Laboratory of Localized Corrosion; Gregor K. Mori, University of Leoben Christian Doppler Laboratory of Localized Corrosion; Michael Panzenboeck, Department of Physical Metallurgy and Materials Testing; Rainer Fluch and Sabine Eglsaeer, Boehler Edelstahl GmbH & Co KG, Research and Development Special Materials