Atom Probe Tomography of the Oxide Layer of an Austenitic Stainless CrMnN-Steel

Stefan Monschein, Ronald Schnitzer, Rainer Fluch, Christoph Turk, Christina Hofer

    Publikation: Beitrag in FachzeitschriftArtikelForschung

    1 Zitat (Scopus)


    This work aimed at developing a methodology for examining the naturally grown passive layer of a thickness of just a few nanometers of an austenitic CrMnN steel by means of atom probe tomography and gaining knowledge on the structure of this alloy's passive layer. The sample surface was ground, polished, cleaned, degreased, electrolytically polished, and oxidized in air to produce a reproducible passive layer. The oxide layer was subsequently coated with a silver layer of a thickness of 3 μm. The silver layer protects the oxide layer during the preparation of the atom probe tips in the focused ion beam microscope and the alignment of the tip in the atom probe. The samples were measured in the atom probe's pulsed-voltage mode. The findings show that an enrichment of oxygen, molybdenum, nitrogen, and chromium and a depletion of manganese, nickel, and iron occur in the area of the passive layer.

    Seiten (von - bis)264-281
    FachzeitschriftPractical metallography = Praktische Metallographie
    PublikationsstatusVeröffentlicht - 14 Mai 2021

    Bibliographische Notiz

    Funding Information:
    Our special thanks for the financial support under the program „Produktion der Zukunft“ (Production of the future) and the „BMVIT Stiftungsprofessur für Industrie“ (BMVIT Endowed professorship for Industry) (846933) go to the Austrian Federal Ministry for Transport, Innovation and Technology (BMVIT). Danksagung

    Publisher Copyright:
    © 2021 Walter de Gruyter GmbH, Berlin/Boston, Germany.

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