Influence of Co to Ni ratio in γ′-strengthened model alloys on oxidation resistance and the efficacy of the halogen effect at 900 °C

Journal article


Publication Details

Author(s): Weiser M, Galetz MC, Zschau HE, Zenk C, Neumeier S, Göken M, Virtanen S
Journal: Corrosion Science
Publication year: 2019
ISSN: 0010-938X


Abstract

The role of base element (Co or Ni) in γ′-strengthened single-crystalline superalloys was elucidated in the present study. Reaction kinetics during oxidation at 900 °C were assessed by thermogravimetry and measurements of individual layer thicknesses in the multilayered oxide scales. The development of diffusion-limiting barrier layers as well as the extent of sub-scale phase transitions could be directly correlated to the Co/Ni ratio in the alloy. For the first time a surface pretreatment with F was applied to Co-base superalloys. Apparent differences in the efficacy of the halogen effect depending on the Co content in the model alloys were observed.


FAU Authors / FAU Editors

Göken, Mathias Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)
Neumeier, Steffen Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)
Virtanen, Sannakaisa Prof. Dr.
Professur für Werkstoffwissenschaften (Korrosion und Oberflächentechnik)
Weiser, Martin
Professur für Werkstoffwissenschaften (Korrosion und Oberflächentechnik)
Zenk, Christopher
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)


External institutions with authors

DECHEMA


How to cite

APA:
Weiser, M., Galetz, M.C., Zschau, H.E., Zenk, C., Neumeier, S., Göken, M., & Virtanen, S. (2019). Influence of Co to Ni ratio in γ′-strengthened model alloys on oxidation resistance and the efficacy of the halogen effect at 900 °C. Corrosion Science. https://dx.doi.org/10.1016/j.corsci.2019.05.007

MLA:
Weiser, Martin, et al. "Influence of Co to Ni ratio in γ′-strengthened model alloys on oxidation resistance and the efficacy of the halogen effect at 900 °C." Corrosion Science (2019).

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Last updated on 2019-30-05 at 00:08