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